Release Notes#

All published functionality in the Release Notes has been fully tested and verified with known limitations documented. To share feedback about this release, access our NVIDIA Developer Forum.

TensorRT-LLM Release 0.20.0#

Key Features and Enhancements#

  • Model Support

    • Added Qwen3 support.Refer to “Qwen3” section in examples/models/core/qwen/README.md.

    • Added HyperCLOVAX-SEED-Vision support in PyTorch flow. Refer to examples/models/contrib/hyperclovax/README.md

    • Added Dynasor-CoT in scaffolding examples. Refer to examples/scaffolding/contrib/Dynasor/README.md

    • Added Mistral Small 3.1 24B VLM support in TRT workflow

    • Added Gemma3-1b-it support in PyTorch workflow

    • Added Nemotron-H model support

    • Added Eagle-3 support for LLAMA4

  • PyTorch workflow

    • Added lora support

    • Added return logits support

    • Adopt new logprob definition in PyTorch flow

    • Enabled per-request stats with PyTorch backend

    • Enabled LogitsProcessor in PyTorch backend

  • Benchmark:

    • Add beam width to low latency.

    • Fix trtllm-bench iter_stats and cuda_graph_batch_sizes errors.

    • Remove deprecated Python runtime benchmark

    • Add benchmark support for scaffolding

  • Multimodal models

    • Added support in trtllm-serve

    • Added support in trtllm-bench, the support is limited to image only for now

  • Supported DeepSeek-R1 W4A8 on Hopper

  • Add the RTX Pro 6000 support on single GPU

  • Integrated Llama4 input processor

  • Added CGA reduction FHMA kernels on Blackwell

  • Enabled chunked context for FlashInfer

  • Supported KV cache reuse for MLA

  • Added Piecewise CUDA Graph support

  • Supported multiple LoRA adapters and TP

  • Added KV cache-aware router for disaggregated serving

  • Unfused attention for native support

  • Added group_rms_norm kernel to normalize multiple inputs in a single operator

  • Added smart router for the MoE module

  • Added head size 72 support for QKV preprocessing kernel

  • Added MNNVL MoE A2A support

  • Optimized Large Embedding Tables in Multimodal Models

  • Supported Top-K logprobs and prompt_logprobs in LLMAPI

  • Enabled overlap scheduler in TRT workflow via executor API

Infrastructure Changes#

  • TRT-LLM team formally releases docker image on NGC.

  • The pre-built TensorRT-LLM wheel on PyPI is linked against PyTorch 2.7.0 now, which uses the CXX11 ABI

  • The dependent TensorRT version is updated to 10.10.0

  • The dependent CUDA version is updated to 12.9.0

  • The dependent public PyTorch version is updated to 2.7.0

  • The dependent NVIDIA ModelOpt version is updated to 0.29.0

  • The dependent NCCL version is maintained at 2.25.1

  • Open-sourced XQA kernels

  • Dependent datasets version was upgraded to 3.1.0

  • Migrate Triton Backend to TensorRT LLM repo to TensorRT LLM submodule

  • Downgrade gcc toolset version from 13 to 11

API Changes#

  • [Breaking Change]:Enable scheduling overlap by default

  • Remove deprecated GptSession/V1 from TRT workflow

  • Set _AutoDeployLlmArgs as primary config object

  • Allow overriding CLI arguments with YAML file in trtllm-serve

  • Introduced multimodal embedding field in LlmRequest

Fixed Issues#

  • Fix hang bug when context server doesn’t have enough capacity for KV Cache (#3095)

  • Fix C++ decoder synchronization in PyTorch (#3106)

  • Fix bug of create cuda stream as default parameter which will be initialized during importing (#3764)

  • Fix bug related to creating CUDA stream as default parameter, which will be initialized during importing (#3764)

  • Fix attention DP bug on Qwen3 MoE model (#4141)

  • Fix illegal memory access when running LLaMA 4 with CUDA Graph enabled (#4101)

  • Reset planned states to avoid memory leak in TrtllmAttentionWrapper (#4227)

Known Issues#

  • multi-GPU model support on RTX Pro 6000

TensorRT-LLM Release 0.19.0#

Key Features and Enhancements#

  • The C++ runtime is now open sourced.

  • PyTorch workflow

    • Added DeepSeek V3/R1 support. Refer to examples/deepseek_v3/README.md, also to the blog docs/source/blogs/Best_perf_practice_on_DeepSeek-R1_in_TensorRT-LLM.md.

    • Added Llava-Next support.

    • Added BERT support.

    • Added a C++ based decoder, which added support for:

      • TopK / TopP.

      • Bad words.

      • Stop words.

      • Embedding bias.

    • Added Autotuner for custom-op-compatible tuning process.

      • Added a Python-based Autotuner core framework for kernel tuning.

      • Applied the Autotuner to fused MoE and NVFP4 linear operators for concept and performance evaluations.

    • Added guided decoding support (XGrammar integration).

    • Added pipeline parallelism support for the overlap scheduler in PyExecutor.

    • Added Qwen2VL model support.

    • Added mixed precision quantization support.

    • Added pipeline parallelism with attention DP support.

    • Added no-cache attention support.

    • Added PeftCacheManager support.

    • Added Qwen2.5‑VL support and refactored Qwen2‑VL.

    • Added trtllm‑gen FP4 GEMM support.

    • Added Qwen2 MoE support.

    • Applied AutoTuner to both Fused MoE and NVFP4 Linear operators.

    • Introduced a UserBuffers allocator.

    • Added Deepseek eager mode AllReduce fusion support.

    • Added Multi-Token Prediction (MTP) support. Refer to the “Multi-Token Prediction (MTP)” section of examples/deepseek_v3/README.md.

    • Added FlashMLA support for SM90.

    • Added support for enabling MTP with CUDA graph padding.

    • Added initial EAGLE-3 implementation.

    • Added support for FP8 MLA on NVIDIA Hopper and Blackwell GPUs.

  • AutoDeploy for PyTorch workflow.

    • The AutoDeploy for PyTorch workflow is an experimental feature in tensorrt_llm._torch.auto_deploy.

    • AutoDeploy provides an automated path from off-the-shelf models to optimized deployment in the TensorRT-LLM runtime.

    • Check out examples/auto_deploy/README.md for more details.

  • LLM API

    • [BREAKING CHANGE] Added dynamic logits processor support, and deprecated static logits processor.

    • Added batched logits processor support.

    • Added EAGLE support.

    • Added abort request support.

    • Added get_stats support.

    • Added multi-node support for Slurm-based clusters, refer to examples/llm-api/llm_mgmn_*.sh.

  • Added InternLM-XComposer2 support. Refer to “InternLM-XComposer2” section in examples/multimodal/README.md.

  • Added INT4-AWQ support for MoE models. Refer to the “AWQ Quantization” section in examples/mixtral/README.md.

  • Added Qwen2-Audio support. Refer to examples/qwen2audio/README.md.

  • Added Language-Adapter support. Refer to examples/language_adapter/README.md.

  • Added STDiT for OpenSoRA text-to-video support. Refer to examples/stdit/README.md.

  • Added vision encoders with tensor parallelism and context parallelism support. Refer to examples/vit/README.md.

  • Added EXAONE-Deep support. Refer to examples/exaone/README.md.

  • Added support for Phi-4-mini and Phi‑4‑MM.

  • Added Gemma3 text‑only model support. Refer to “Run Gemma 3” section at examples/gemma/README.md.

  • Added FP8 quantization support for Qwen2-VL.

  • Added batched inference support for the LLM API MMLU example examples/mmlu_llmapi.py.

  • Added FP4 quantization-layernorm fusion plugin support. (Llama models only)

  • Added Mamba-Hybrid support.

  • Added NVILA video support. The support includes 1 prompt - N media and N prompt - N media batching modes.

  • Added a --quantize_lm_head option examples/quantization/quantize.py to support lm_head quantization.

  • Added batched tensor FP4 quantization support.

  • Added a /metrics endpoint for trtllm-serve to log iteration statistics.

  • Added LoRA support for Phi-2 model.

  • Added returning context logits support for trtllm-serve.

  • Added one-shot version for UserBuffer AllReduce-Normalization on FP16/BF16.

  • Added request BW metric measurement for disaggServerBenchmark.

  • Updated logits bitmask kernel to v3.

  • Enabled CUDA graphs when attention DP was used and active requests on different GPUs were uneven.

  • Added iteration log support for trtllm-bench.

  • fp8_blockscale_gemm is now open-sourced.

  • Added AWQ support for ModelOpt checkpoints.

  • Added Linear block scale layout support in FP4 quantization.

  • Added pre-quantized FP8 checkpoint support for Nemotron-mini-4b-instruct.

  • Added Variable-Beam-Width-Search (VBWS) support (part2).

  • Added LoRA support for Gemma.

  • Refactored scaffolding worker, added OpenAI API worker support.

  • Optionally split MoE inputs into chunks to reduce GPU memory usage.

  • Added UCX IP interface support.

  • [BREAKING CHANGE] Added output of first token to additional generation outputs.

  • Added FP8 support for SM120 architecture.

  • Registered ENABLE_MULTI_DEVICE and ENABLE_UCX as CMake options.

  • Made the scaffolding Controller more generic.

  • Breaking change: Added individual gatherContext support for each additional output.

  • Enabled PyExecutor inference flow to estimate max_num_tokens for kv_cache_manager.

  • Added TLLM_OVERRIDE_LAYER_NUM and TLLM_TRACE_MODEL_FORWARD environment variables for debugging.

  • Supported aborting disconnected requests.

  • Added an option to run disaggregated serving without context servers.

  • Fixed and improved allreduce and fusion kernels.

  • Enhanced the integrated robustness of scaffolding via init.py.

API Changes#

  • Exposed kc_cache_retention_config from C++ executor API to the LLM API.

  • Moved BuildConfig arguments to LlmArgs.

  • Removed speculative decoding parameters from stateful decoders.

  • Exposed DecoderState via bindings and integrated it in decoder.

  • Refactored the LlmArgs with Pydantic and migrated remaining pybinding configurations to Python.

  • Refactored disaggregated serving scripts.

  • Added numNodes to ParallelConfig.

  • Redesigned the multi‑stream API for DeepSeek.

Fixed Issues#

  • Fixed misused length argument of PluginField. Thanks to the contribution from @jl749 in #2712. This also fixes #2685.

  • Fixed a Llama-3.2 SmoothQuant convert checkpoint issue. (#2677)

  • Fixed a bug when loading an engine using LoRA through the LLM API. (#2782)

  • Fixed incorrect batch slot usage in addCumLogProbs kernel. Thanks to the contribution from @aotman in #2787.

  • Fixed incorrect output for Llama-3.2-11B-Vision-Instruct. (#2796)

  • Removed the necessary of --extra-index-url https://pypi.nvidia.com when running pip install tensorrt-llm.

Infrastructure Changes#

  • The dependent NVIDIA ModelOpt version is updated to 0.27.

Known Issues#

  • The PyTorch workflow on SBSA is incompatible with bare metal environments like Ubuntu 24.04. Please use the PyTorch NGC Container for optimal support on SBSA platforms.

TensorRT-LLM Release 0.18.2#

Key Features and Enhancements#

  • This update addresses known security issues. For the latest NVIDIA Vulnerability Disclosure Information visit https://www.nvidia.com/en-us/security/.

TensorRT-LLM Release 0.18.1#

Key Features and Enhancements#

  • The 0.18.x series of releases builds upon the 0.17.0 release, focusing exclusively on dependency updates without incorporating features from the previous 0.18.0.dev pre-releases. These features will be included in future stable releases.

Infrastructure Changes#

  • The dependent transformers package version is updated to 4.48.3.

TensorRT-LLM Release 0.18.0#

Key Features and Enhancements#

  • Features that were previously available in the 0.18.0.dev pre-releases are not included in this release.

  • [BREAKING CHANGE] Windows platform support is deprecated as of v0.18.0. All Windows-related code and functionality will be completely removed in future releases.

Known Issues#

  • The PyTorch workflow on SBSA is incompatible with bare metal environments like Ubuntu 24.04. Please use the PyTorch NGC Container for optimal support on SBSA platforms.

Infrastructure Changes#

  • The base Docker image for TensorRT-LLM is updated to nvcr.io/nvidia/pytorch:25.03-py3.

  • The base Docker image for TensorRT-LLM Backend is updated to nvcr.io/nvidia/tritonserver:25.03-py3.

  • The dependent TensorRT version is updated to 10.9.

  • The dependent CUDA version is updated to 12.8.1.

  • The dependent NVIDIA ModelOpt version is updated to 0.25 for Linux platform.

TensorRT-LLM Release 0.17.0#

Key Features and Enhancements#

  • Blackwell support

    • NOTE: pip installation is not supported for TRT-LLM 0.17 on Blackwell platforms only. Instead, it is recommended that the user build from source using NVIDIA NGC 25.01 PyTorch container.

    • Added support for B200.

    • Added support for GeForce RTX 50 series using Windows Subsystem for Linux (WSL) for limited models.

    • Added NVFP4 Gemm support for Llama and Mixtral models.

    • Added NVFP4 support for the LLM API and trtllm-bench command.

    • GB200 NVL is not fully supported.

    • Added benchmark script to measure perf benefits of KV cache host offload with expected runtime improvements from GH200.

  • PyTorch workflow

    • The PyTorch workflow is an experimental feature in tensorrt_llm._torch. The following is a list of supported infrastructure, models, and features that can be used with the PyTorch workflow.

    • Added support for H100/H200/B200.

    • Added support for Llama models, Mixtral, QWen, Vila.

    • Added support for FP16/BF16/FP8/NVFP4 Gemm and fused Mixture-Of-Experts (MOE), FP16/BF16/FP8 KVCache.

    • Added custom context and decoding attention kernels support via PyTorch custom op.

    • Added support for chunked context (default off).

    • Added CudaGraph support for decoding only.

    • Added overlap scheduler support to overlap prepare inputs and model forward by decoding 1 extra token.

  • Added FP8 context FMHA support for the W4A8 quantization workflow.

  • Added ModelOpt quantized checkpoint support for the LLM API.

  • Added FP8 support for the Llama-3.2 VLM model. Refer to the “MLLaMA” section in examples/multimodal/README.md.

  • Added PDL support for userbuffer based AllReduce-Norm fusion kernel.

  • Added runtime support for seamless lookahead decoding.

  • Added token-aligned arbitrary output tensors support for the C++ executor API.

API Changes#

  • [BREAKING CHANGE] KV cache reuse is enabled automatically when paged_context_fmha is enabled.

  • Added --concurrency support for the throughput subcommand of trtllm-bench.

Known Issues#

  • Need --extra-index-url https://pypi.nvidia.com when running pip install tensorrt-llm due to new third-party dependencies.

  • The PYPI SBSA wheel is incompatible with PyTorch 2.5.1 due to a break in the PyTorch ABI/API, as detailed in the related GitHub issue.

  • The PyTorch workflow on SBSA is incompatible with bare metal environments like Ubuntu 24.04. Please use the PyTorch NGC Container for optimal support on SBSA platforms.

Fixed Issues#

  • Fixed incorrect LoRA output dimension. Thanks for the contribution from @akhoroshev in #2484.

  • Added NVIDIA H200 GPU into the cluster_key for auto parallelism feature. (#2552)

  • Fixed a typo in the __post_init__ function of LLmArgs Class. Thanks for the contribution from @topenkoff in #2691.

  • Fixed workspace size issue in the GPT attention plugin. Thanks for the contribution from @AIDC-AI.

  • Fixed Deepseek-V2 model accuracy.

Infrastructure Changes#

  • The base Docker image for TensorRT-LLM is updated to nvcr.io/nvidia/pytorch:25.01-py3.

  • The base Docker image for TensorRT-LLM Backend is updated to nvcr.io/nvidia/tritonserver:25.01-py3.

  • The dependent TensorRT version is updated to 10.8.0.

  • The dependent CUDA version is updated to 12.8.0.

  • The dependent ModelOpt version is updated to 0.23 for Linux platform, while 0.17 is still used on Windows platform.

TensorRT-LLM Release 0.16.0#

Key Features and Enhancements#

  • Added guided decoding support with XGrammar backend.

  • Added quantization support for RecurrentGemma. Refer to examples/recurrentgemma/README.md.

  • Added ulysses context parallel support. Refer to an example on building LLaMA 7B using 2-way tensor parallelism and 2-way context parallelism at examples/llama/README.md.

  • Added W4A8 quantization support to BF16 models on Ada (SM89).

  • Added PDL support for the FP8 GEMM plugins.

  • Added a runtime max_num_tokens dynamic tuning feature, which can be enabled by setting --enable_max_num_tokens_tuning to gptManagerBenchmark.

  • Added typical acceptance support for EAGLE.

  • Supported chunked context and sliding window attention to be enabled together.

  • Added head size 64 support for the XQA kernel.

  • Added the following features to the LLM API:

    • Lookahead decoding.

    • DeepSeek V1 support.

    • Medusa support.

    • max_num_tokens and max_batch_size arguments to control the runtime parameters.

    • extended_runtime_perf_knob_config to enable various performance configurations.

  • Added LogN scaling support for Qwen models.

  • Added AutoAWQ checkpoints support for Qwen. Refer to the “INT4-AWQ” section in examples/qwen/README.md.

  • Added AutoAWQ and AutoGPTQ Hugging Face checkpoints support for LLaMA. (#2458)

  • Added allottedTimeMs to the C++ Request class to support per-request timeout.

  • [BREAKING CHANGE] Removed NVIDIA V100 GPU support.

API Changes#

  • [BREAKING CHANGE] Removed enable_xqa argument from trtllm-build.

  • [BREAKING CHANGE] Chunked context is enabled by default when KV cache and paged context FMHA is enabled on non-RNN based models.

  • [BREAKING CHANGE] Enabled embedding sharing automatically when possible and remove the flag --use_embedding_sharing from convert checkpoints scripts.

  • [BREAKING CHANGE] The if __name__ == "__main__" entry point is required for both single-GPU and multi-GPU cases when using the LLM API.

  • [BREAKING CHANGE] Cancelled requests now return empty results.

  • Added the enable_chunked_prefill flag to the LlmArgs of the LLM API.

  • Integrated BERT and RoBERTa models to the trtllm-build command.

Model Updates#

  • Added Qwen2-VL support. Refer to the “Qwen2-VL” section of examples/multimodal/README.md.

  • Added multimodal evaluation examples. Refer to examples/multimodal.

  • Added Stable Diffusion XL support. Refer to examples/sdxl/README.md. Thanks for the contribution from @Zars19 in #1514.

Fixed Issues#

  • Fixed unnecessary batch logits post processor calls. (#2439)

  • Fixed a typo in the error message. (#2473)

  • Fixed the in-place clamp operation usage in smooth quant. Thanks for the contribution from @StarrickLiu in #2485.

  • Fixed sampling_params to only be setup if end_id is None and tokenizer is not None in the LLM API. Thanks to the contribution from @mfuntowicz in #2573.

Infrastructure Changes#

  • Updated the base Docker image for TensorRT-LLM to nvcr.io/nvidia/pytorch:24.11-py3.

  • Updated the base Docker image for TensorRT-LLM Backend to nvcr.io/nvidia/tritonserver:24.11-py3.

  • Updated to TensorRT v10.7.

  • Updated to CUDA v12.6.3.

  • Added support for Python 3.10 and 3.12 to TensorRT-LLM Python wheels on PyPI.

  • Updated to ModelOpt v0.21 for Linux platform, while v0.17 is still used on Windows platform.

Known Issues#

  • There is a known AllReduce performance issue on AMD-based CPU platforms on NCCL 2.23.4, which can be workarounded by export NCCL_P2P_LEVEL=SYS.

TensorRT-LLM Release 0.15.0#

Key Features and Enhancements#

  • Added support for EAGLE. Refer to examples/eagle/README.md.

  • Added functional support for GH200 systems.

  • Added AutoQ (mixed precision) support.

  • Added a trtllm-serve command to start a FastAPI based server.

  • Added FP8 support for Nemotron NAS 51B. Refer to examples/nemotron_nas/README.md.

  • Added INT8 support for GPTQ quantization.

  • Added TensorRT native support for INT8 Smooth Quantization.

  • Added quantization support for Exaone model. Refer to examples/exaone/README.md.

  • Enabled Medusa for Qwen2 models. Refer to “Medusa with Qwen2” section in examples/medusa/README.md.

  • Optimized pipeline parallelism with ReduceScatter and AllGather for Mixtral models.

  • Added support for Qwen2ForSequenceClassification model architecture.

  • Added Python plugin support to simplify plugin development efforts. Refer to examples/python_plugin/README.md.

  • Added different rank dimensions support for LoRA modules when using the Hugging Face format. Thanks for the contribution from @AlessioNetti in #2366.

  • Enabled embedding sharing by default. Refer to “Embedding Parallelism, Embedding Sharing, and Look-Up Plugin” section in docs/source/performance/perf-best-practices.md for information about the required conditions for embedding sharing.

  • Added support for per-token per-channel FP8 (namely row-wise FP8) on Ada.

  • Extended the maximum supported beam_width to 256.

  • Added FP8 and INT8 SmoothQuant quantization support for the InternVL2-4B variant (LLM model only). Refer to examples/multimodal/README.md.

  • Added support for prompt-lookup speculative decoding. Refer to examples/prompt_lookup/README.md.

  • Integrated the QServe w4a8 per-group/per-channel quantization. Refer to “w4aINT8 quantization (QServe)” section in examples/llama/README.md.

  • Added a C++ example for fast logits using the executor API. Refer to “executorExampleFastLogits” section in examples/cpp/executor/README.md.

  • [BREAKING CHANGE] NVIDIA Volta GPU support is removed in this and future releases.

  • Added the following enhancements to the LLM API:

    • [BREAKING CHANGE] Moved the runtime initialization from the first invocation of LLM.generate to LLM.__init__ for better generation performance without warmup.

    • Added n and best_of arguments to the SamplingParams class. These arguments enable returning multiple generations for a single request.

    • Added ignore_eos, detokenize, skip_special_tokens, spaces_between_special_tokens, and truncate_prompt_tokens arguments to the SamplingParams class. These arguments enable more control over the tokenizer behavior.

    • Added support for incremental detokenization to improve the detokenization performance for streaming generation.

    • Added the enable_prompt_adapter argument to the LLM class and the prompt_adapter_request argument for the LLM.generate method. These arguments enable prompt tuning.

  • Added support for a gpt_variant argument to the examples/gpt/convert_checkpoint.py file. This enhancement enables checkpoint conversion with more GPT model variants. Thanks to the contribution from @tonylek in #2352.

API Changes#

  • [BREAKING CHANGE] Moved the flag builder_force_num_profiles in trtllm-build command to the BUILDER_FORCE_NUM_PROFILES environment variable.

  • [BREAKING CHANGE] Modified defaults for BuildConfig class so that they are aligned with the trtllm-build command.

  • [BREAKING CHANGE] Removed Python bindings of GptManager.

  • [BREAKING CHANGE] auto is used as the default value for --dtype option in quantize and checkpoints conversion scripts.

  • [BREAKING CHANGE] Deprecated gptManager API path in gptManagerBenchmark.

  • [BREAKING CHANGE] Deprecated the beam_width and num_return_sequences arguments to the SamplingParams class in the LLM API. Use the n, best_of and use_beam_search arguments instead.

  • Exposed --trust_remote_code argument to the OpenAI API server. (#2357)

Model Updates#

  • Added support for Llama 3.2 and llama 3.2-Vision model. Refer to examples/mllama/README.md for more details on the llama 3.2-Vision model.

  • Added support for Deepseek-v2. Refer to examples/deepseek_v2/README.md.

  • Added support for Cohere Command R models. Refer to examples/commandr/README.md.

  • Added support for Falcon 2, refer to examples/falcon/README.md, thanks to the contribution from @puneeshkhanna in #1926.

  • Added support for InternVL2. Refer to examples/multimodal/README.md.

  • Added support for Qwen2-0.5B and Qwen2.5-1.5B model. (#2388)

  • Added support for Minitron. Refer to examples/nemotron.

  • Added a GPT Variant - Granite(20B and 34B). Refer to “GPT Variant - Granite” section in examples/gpt/README.md.

  • Added support for LLaVA-OneVision model. Refer to “LLaVA, LLaVa-NeXT, LLaVA-OneVision and VILA” section in examples/multimodal/README.md.

Fixed Issues#

  • Fixed a slice error in forward function. (#1480)

  • Fixed an issue that appears when building BERT. (#2373)

  • Fixed an issue that model is not loaded when building BERT. (2379)

  • Fixed the broken executor examples. (#2294)

  • Fixed the issue that the kernel moeTopK() cannot find the correct expert when the number of experts is not a power of two. Thanks @dongjiyingdjy for reporting this bug.

  • Fixed an assertion failure on crossKvCacheFraction. (#2419)

  • Fixed an issue when using smoothquant to quantize Qwen2 model. (#2370)

  • Fixed a PDL typo in docs/source/performance/perf-benchmarking.md, thanks @MARD1NO for pointing it out in #2425.

Infrastructure Changes#

  • The base Docker image for TensorRT-LLM is updated to nvcr.io/nvidia/pytorch:24.10-py3.

  • The base Docker image for TensorRT-LLM Backend is updated to nvcr.io/nvidia/tritonserver:24.10-py3.

  • The dependent TensorRT version is updated to 10.6.

  • The dependent CUDA version is updated to 12.6.2.

  • The dependent PyTorch version is updated to 2.5.1.

  • The dependent ModelOpt version is updated to 0.19 for Linux platform, while 0.17 is still used on Windows platform.

Documentation#

  • Added a copy button for code snippets in the documentation. (#2288)

TensorRT-LLM Release 0.14.0#

Key Features and Enhancements#

  • Enhanced the LLM class in the LLM API.

    • Added support for calibration with offline dataset.

    • Added support for Mamba2.

    • Added support for finish_reason and stop_reason.

  • Added FP8 support for CodeLlama.

  • Added __repr__ methods for class Module, thanks to the contribution from @1ytic in #2191.

  • Added BFloat16 support for fused gated MLP.

  • Updated ReDrafter beam search logic to match Apple ReDrafter v1.1.

  • Improved customAllReduce performance.

  • Draft model now can copy logits directly over MPI to the target model’s process in orchestrator mode. This fast logits copy reduces the delay between draft token generation and the beginning of target model inference.

  • NVIDIA Volta GPU support is deprecated and will be removed in a future release.

API Changes#

  • [BREAKING CHANGE] The default max_batch_size of the trtllm-build command is set to 2048.

  • [BREAKING CHANGE] Remove builder_opt from the BuildConfig class and the trtllm-build command.

  • Add logits post-processor support to the ModelRunnerCpp class.

  • Added isParticipant method to the C++ Executor API to check if the current process is a participant in the executor instance.

Model Updates#

  • Added support for NemotronNas, see examples/nemotron_nas/README.md.

  • Added support for Deepseek-v1, see examples/deepseek_v1/README.md.

  • Added support for Phi-3.5 models, see examples/phi/README.md.

Fixed Issues#

  • Fixed a typo in tensorrt_llm/models/model_weights_loader.py, thanks to the contribution from @wangkuiyi in #2152.

  • Fixed duplicated import module in tensorrt_llm/runtime/generation.py, thanks to the contribution from @lkm2835 in #2182.

  • Enabled share_embedding for the models that have no lm_head in legacy checkpoint conversion path, thanks to the contribution from @lkm2835 in #2232.

  • Fixed kv_cache_type issue in the Python benchmark, thanks to the contribution from @qingquansong in #2219.

  • Fixed an issue with SmoothQuant calibration with custom datasets. Thanks to the contribution by @Bhuvanesh09 in #2243.

  • Fixed an issue surrounding trtllm-build --fast-build with fake or random weights. Thanks to @ZJLi2013 for flagging it in #2135.

  • Fixed missing use_fused_mlp when constructing BuildConfig from dict, thanks for the fix from @ethnzhng in #2081.

  • Fixed lookahead batch layout for numNewTokensCumSum. (#2263)

Infrastructure Changes#

  • The dependent ModelOpt version is updated to v0.17.

Documentation#

  • @Sherlock113 added a tech blog to the latest news in #2169, thanks for the contribution.

Known Issues#

  • Replit Code is not supported with the transformers 4.45+

TensorRT-LLM Release 0.13.0#

Key Features and Enhancements#

  • Supported lookahead decoding (experimental), see docs/source/speculative_decoding.md.

  • Added some enhancements to the ModelWeightsLoader (a unified checkpoint converter, see docs/source/architecture/model-weights-loader.md).

    • Supported Qwen models.

    • Supported auto-padding for indivisible TP shape in INT4-wo/INT8-wo/INT4-GPTQ.

    • Improved performance on *.bin and *.pth.

  • Supported OpenAI Whisper in C++ runtime.

  • Added some enhancements to the LLM class.

    • Supported LoRA.

    • Supported engine building using dummy weights.

    • Supported trust_remote_code for customized models and tokenizers downloaded from Hugging Face Hub.

  • Supported beam search for streaming mode.

  • Supported tensor parallelism for Mamba2.

  • Supported returning generation logits for streaming mode.

  • Added curand and bfloat16 support for ReDrafter.

  • Added sparse mixer normalization mode for MoE models.

  • Added support for QKV scaling in FP8 FMHA.

  • Supported FP8 for MoE LoRA.

  • Supported KV cache reuse for P-Tuning and LoRA.

  • Supported in-flight batching for CogVLM models.

  • Supported LoRA for the ModelRunnerCpp class.

  • Supported head_size=48 cases for FMHA kernels.

  • Added FP8 examples for DiT models, see examples/dit/README.md.

  • Supported decoder with encoder input features for the C++ executor API.

API Changes#

  • [BREAKING CHANGE] Set use_fused_mlp to True by default.

  • [BREAKING CHANGE] Enabled multi_block_mode by default.

  • [BREAKING CHANGE] Enabled strongly_typed by default in builder API.

  • [BREAKING CHANGE] Renamed maxNewTokens, randomSeed and minLength to maxTokens, seed and minTokens following OpenAI style.

  • The LLM class

    • [BREAKING CHANGE] Updated LLM.generate arguments to include PromptInputs and tqdm.

  • The C++ executor API

    • [BREAKING CHANGE] Added LogitsPostProcessorConfig.

    • Added FinishReason to Result.

Model Updates#

  • Supported Gemma 2, see “Run Gemma 2” section in examples/gemma/README.md.

Fixed Issues#

  • Fixed an accuracy issue when enabling remove padding issue for cross attention. (#1999)

  • Fixed the failure in converting qwen2-0.5b-instruct when using smoothquant. (#2087)

  • Matched the exclude_modules pattern in convert_utils.py to the changes in quantize.py. (#2113)

  • Fixed build engine error when FORCE_NCCL_ALL_REDUCE_STRATEGY is set.

  • Fixed unexpected truncation in the quant mode of gpt_attention.

  • Fixed the hang caused by race condition when canceling requests.

  • Fixed the default factory for LoraConfig. (#1323)

Infrastructure Changes#

  • Base Docker image for TensorRT-LLM is updated to nvcr.io/nvidia/pytorch:24.07-py3.

  • Base Docker image for TensorRT-LLM Backend is updated to nvcr.io/nvidia/tritonserver:24.07-py3.

  • The dependent TensorRT version is updated to 10.4.0.

  • The dependent CUDA version is updated to 12.5.1.

  • The dependent PyTorch version is updated to 2.4.0.

  • The dependent ModelOpt version is updated to v0.15.

TensorRT-LLM Release 0.12.0#

Key Features and Enhancements#

  • Supported LoRA for MoE models.

  • The ModelWeightsLoader is enabled for LLaMA family models (experimental), see docs/source/architecture/model-weights-loader.md.

  • Supported FP8 FMHA for NVIDIA Ada Lovelace Architecture.

  • Supported GPT-J, Phi, Phi-3, Qwen, GPT, GLM, Baichuan, Falcon and Gemma models for the LLM class.

  • Supported FP8 OOTB MoE.

  • Supported Starcoder2 SmoothQuant. (#1886)

  • Supported ReDrafter Speculative Decoding, see “ReDrafter” section in docs/source/speculative_decoding.md.

  • Supported padding removal for BERT, thanks to the contribution from @Altair-Alpha in #1834.

  • Added in-flight batching support for GLM 10B model.

  • Supported gelu_pytorch_tanh activation function, thanks to the contribution from @ttim in #1897.

  • Added chunk_length parameter to Whisper, thanks to the contribution from @MahmoudAshraf97 in #1909.

  • Added concurrency argument for gptManagerBenchmark.

  • Executor API supports requests with different beam widths, see docs/source/executor.md#sending-requests-with-different-beam-widths.

  • Added the flag --fast_build to trtllm-build command (experimental).

API Changes#

  • [BREAKING CHANGE] max_output_len is removed from trtllm-build command, if you want to limit sequence length on engine build stage, specify max_seq_len.

  • [BREAKING CHANGE] The use_custom_all_reduce argument is removed from trtllm-build.

  • [BREAKING CHANGE] The multi_block_mode argument is moved from build stage (trtllm-build and builder API) to the runtime.

  • [BREAKING CHANGE] The build time argument context_fmha_fp32_acc is moved to runtime for decoder models.

  • [BREAKING CHANGE] The arguments tp_size, pp_size and cp_size is removed from trtllm-build command.

  • The C++ batch manager API is deprecated in favor of the C++ executor API, and it will be removed in a future release of TensorRT-LLM.

  • Added a version API to the C++ library, a cpp/include/tensorrt_llm/executor/version.h file is going to be generated.

Model Updates#

  • Supported LLaMA 3.1 model.

  • Supported Mamba-2 model.

  • Supported EXAONE model, see examples/exaone/README.md.

  • Supported Qwen 2 model.

  • Supported GLM4 models, see examples/chatglm/README.md.

  • Added LLaVa-1.6 (LLaVa-NeXT) multimodal support, see “LLaVA, LLaVa-NeXT and VILA” section in examples/multimodal/README.md.

Fixed Issues#

  • Fixed wrong pad token for the CodeQwen models. (#1953)

  • Fixed typo in cluster_infos defined in tensorrt_llm/auto_parallel/cluster_info.py, thanks to the contribution from @saeyoonoh in #1987.

  • Removed duplicated flags in the command at docs/source/reference/troubleshooting.md, thanks for the contribution from @hattizai in #1937.

  • Fixed segmentation fault in TopP sampling layer, thanks to the contribution from @akhoroshev in #2039. (#2040)

  • Fixed the failure when converting the checkpoint for Mistral Nemo model. (#1985)

  • Propagated exclude_modules to weight-only quantization, thanks to the contribution from @fjosw in #2056.

  • Fixed wrong links in README, thanks to the contribution from @Tayef-Shah in #2028.

  • Fixed some typos in the documentation, thanks to the contribution from @lfz941 in #1939.

  • Fixed the engine build failure when deduced max_seq_len is not an integer. (#2018)

Infrastructure Changes#

  • Base Docker image for TensorRT-LLM is updated to nvcr.io/nvidia/pytorch:24.07-py3.

  • Base Docker image for TensorRT-LLM Backend is updated to nvcr.io/nvidia/tritonserver:24.07-py3.

  • The dependent TensorRT version is updated to 10.3.0.

  • The dependent CUDA version is updated to 12.5.1.

  • The dependent PyTorch version is updated to 2.4.0.

  • The dependent ModelOpt version is updated to v0.15.0.

Known Issues#

  • On Windows, installation of TensorRT-LLM may succeed, but you might hit OSError: exception: access violation reading 0x0000000000000000 when importing the library in Python. See Installing on Windows for workarounds.

TensorRT-LLM Release 0.11.0#

Key Features and Enhancements#

  • Supported very long context for LLaMA (see “Long context evaluation” section in examples/llama/README.md).

  • Low latency optimization

    • Added a reduce-norm feature which aims to fuse the ResidualAdd and LayerNorm kernels after AllReduce into a single kernel, which is recommended to be enabled when the batch size is small and the generation phase time is dominant.

    • Added FP8 support to the GEMM plugin, which benefits the cases when batch size is smaller than 4.

    • Added a fused GEMM-SwiGLU plugin for FP8 on SM90.

  • LoRA enhancements

    • Supported running FP8 LLaMA with FP16 LoRA checkpoints.

    • Added support for quantized base model and FP16/BF16 LoRA.

      • SQ OOTB (- INT8 A/W) + FP16/BF16/FP32 LoRA​

      • INT8/ INT4 Weight-Only (INT8 /W) + FP16/BF16/FP32 LoRA​

      • Weight-Only Group-wise + FP16/BF16/FP32 LoRA

    • Added LoRA support to Qwen2, see “Run models with LoRA” section in examples/qwen/README.md.

    • Added support for Phi-3-mini/small FP8 base + FP16/BF16 LoRA, see “Run Phi-3 with LoRA” section in examples/phi/README.md.

    • Added support for starcoder-v2 FP8 base + FP16/BF16 LoRA, see “Run StarCoder2 with LoRA” section in examples/gpt/README.md.

  • Encoder-decoder models C++ runtime enhancements

    • Supported paged KV cache and inflight batching. (#800)

    • Supported tensor parallelism.

  • Supported INT8 quantization with embedding layer excluded.

  • Updated default model for Whisper to distil-whisper/distil-large-v3, thanks to the contribution from @IbrahimAmin1 in #1337.

  • Supported HuggingFace model automatically download for the Python high level API.

  • Supported explicit draft tokens for in-flight batching.

  • Supported local custom calibration datasets, thanks to the contribution from @DreamGenX in #1762.

  • Added batched logits post processor.

  • Added Hopper qgmma kernel to XQA JIT codepath.

  • Supported tensor parallelism and expert parallelism enabled together for MoE.

  • Supported the pipeline parallelism cases when the number of layers cannot be divided by PP size.

  • Added numQueuedRequests to the iteration stats log of the executor API.

  • Added iterLatencyMilliSec to the iteration stats log of the executor API.

  • Add HuggingFace model zoo from the community, thanks to the contribution from @matichon-vultureprime in #1674.

API Changes#

  • [BREAKING CHANGE] trtllm-build command

    • Migrated Whisper to unified workflow (trtllm-build command), see documents: examples/whisper/README.md.

    • max_batch_size in trtllm-build command is switched to 256 by default.

    • max_num_tokens in trtllm-build command is switched to 8192 by default.

    • Deprecated max_output_len and added max_seq_len.

    • Removed unnecessary --weight_only_precision argument from trtllm-build command.

    • Removed attention_qk_half_accumulation argument from trtllm-build command.

    • Removed use_context_fmha_for_generation argument from trtllm-build command.

    • Removed strongly_typed argument from trtllm-build command.

    • The default value of max_seq_len reads from the HuggingFace mode config now.

  • C++ runtime

    • [BREAKING CHANGE] Renamed free_gpu_memory_fraction in ModelRunnerCpp to kv_cache_free_gpu_memory_fraction.

    • [BREAKING CHANGE] Refactored GptManager API

      • Moved maxBeamWidth into TrtGptModelOptionalParams.

      • Moved schedulerConfig into TrtGptModelOptionalParams.

    • Added some more options to ModelRunnerCpp, including max_tokens_in_paged_kv_cache, kv_cache_enable_block_reuse and enable_chunked_context.

  • [BREAKING CHANGE] Python high-level API

    • Removed the ModelConfig class, and all the options are moved to LLM class.

    • Refactored the LLM class, please refer to examples/high-level-api/README.md

      • Moved the most commonly used options in the explicit arg-list, and hidden the expert options in the kwargs.

      • Exposed model to accept either HuggingFace model name or local HuggingFace model/TensorRT-LLM checkpoint/TensorRT-LLM engine.

      • Support downloading model from HuggingFace model hub, currently only Llama variants are supported.

      • Support build cache to reuse the built TensorRT-LLM engines by setting environment variable TLLM_LLMAPI_BUILD_CACHE=1 or passing enable_build_cache=True to LLM class.

      • Exposed low-level options including BuildConfig, SchedulerConfig and so on in the kwargs, ideally you should be able to configure details about the build and runtime phase.

    • Refactored LLM.generate() and LLM.generate_async() API.

      • Removed SamplingConfig.

      • Added SamplingParams with more extensive parameters, see tensorrt_llm/llmapi/utils.py.

        • The new SamplingParams contains and manages fields from Python bindings of SamplingConfig, OutputConfig, and so on.

      • Refactored LLM.generate() output as RequestOutput, see tensorrt_llm/llmapi/llm.py.

    • Updated the apps examples, specially by rewriting both chat.py and fastapi_server.py using the LLM APIs, please refer to the examples/apps/README.md for details.

      • Updated the chat.py to support multi-turn conversation, allowing users to chat with a model in the terminal.

      • Fixed the fastapi_server.py and eliminate the need for mpirun in multi-GPU scenarios.

  • [BREAKING CHANGE] Speculative decoding configurations unification

    • Introduction of SpeculativeDecodingMode.h to choose between different speculative decoding techniques.

    • Introduction of SpeculativeDecodingModule.h base class for speculative decoding techniques.

    • Removed decodingMode.h.

  • gptManagerBenchmark

    • [BREAKING CHANGE] api in gptManagerBenchmark command is executor by default now.

    • Added a runtime max_batch_size.

    • Added a runtime max_num_tokens.

  • [BREAKING CHANGE] Added a bias argument to the LayerNorm module, and supports non-bias layer normalization.

  • [BREAKING CHANGE] Removed GptSession Python bindings.

Model Updates#

  • Supported Jais, see examples/jais/README.md.

  • Supported DiT, see examples/dit/README.md.

  • Supported VILA 1.5.

  • Supported Video NeVA, see Video NeVAsection in examples/multimodal/README.md.

  • Supported Grok-1, see examples/grok/README.md.

  • Supported Qwen1.5-110B with FP8 PTQ.

  • Supported Phi-3 small model with block sparse attention.

  • Supported InternLM2 7B/20B, thanks to the contribution from @RunningLeon in #1392.

  • Supported Phi-3-medium models, see examples/phi/README.md.

  • Supported Qwen1.5 MoE A2.7B.

  • Supported phi 3 vision multimodal.

Fixed Issues#

  • Fixed brokens outputs for the cases when batch size is larger than 1. (#1539)

  • Fixed top_k type in executor.py, thanks to the contribution from @vonjackustc in #1329.

  • Fixed stop and bad word list pointer offset in Python runtime, thanks to the contribution from @fjosw in #1486.

  • Fixed some typos for Whisper model, thanks to the contribution from @Pzzzzz5142 in #1328.

  • Fixed export failure with CUDA driver < 526 and pynvml >= 11.5.0, thanks to the contribution from @CoderHam in #1537.

  • Fixed an issue in NMT weight conversion, thanks to the contribution from @Pzzzzz5142 in #1660.

  • Fixed LLaMA Smooth Quant conversion, thanks to the contribution from @lopuhin in #1650.

  • Fixed qkv_bias shape issue for Qwen1.5-32B (#1589), thanks to the contribution from @Tlntin in #1637.

  • Fixed the error of Ada traits for fpA_intB, thanks to the contribution from @JamesTheZ in #1583.

  • Update examples/qwenvl/requirements.txt, thanks to the contribution from @ngoanpv in #1248.

  • Fixed rsLoRA scaling in lora_manager, thanks to the contribution from @TheCodeWrangler in #1669.

  • Fixed Qwen1.5 checkpoint convert failure #1675.

  • Fixed Medusa safetensors and AWQ conversion, thanks to the contribution from @Tushar-ml in #1535.

  • Fixed convert_hf_mpt_legacy call failure when the function is called in other than global scope, thanks to the contribution from @bloodeagle40234 in #1534.

  • Fixed use_fp8_context_fmha broken outputs (#1539).

  • Fixed pre-norm weight conversion for NMT models, thanks to the contribution from @Pzzzzz5142 in #1723.

  • Fixed random seed initialization issue, thanks to the contribution from @pathorn in #1742.

  • Fixed stop words and bad words in python bindings. (#1642)

  • Fixed the issue that when converting checkpoint for Mistral 7B v0.3, thanks to the contribution from @Ace-RR: #1732.

  • Fixed broken inflight batching for fp8 Llama and Mixtral, thanks to the contribution from @bprus: #1738

  • Fixed the failure when quantize.py is export data to config.json, thanks to the contribution from @janpetrov: #1676

  • Raise error when autopp detects unsupported quant plugin #1626.

  • Fixed the issue that shared_embedding_table is not being set when loading Gemma #1799, thanks to the contribution from @mfuntowicz.

  • Fixed stop and bad words list contiguous for ModelRunner #1815, thanks to the contribution from @Marks101.

  • Fixed missing comment for FAST_BUILD, thanks to the support from @lkm2835 in #1851.

  • Fixed the issues that Top-P sampling occasionally produces invalid tokens. #1590

  • Fixed #1424.

  • Fixed #1529.

  • Fixed benchmarks/cpp/README.md for #1562 and #1552.

  • Fixed dead link, thanks to the help from @DefTruth, @buvnswrn and @sunjiabin17 in: https://github.com/triton-inference-server/tensorrtllm_backend/pull/478, https://github.com/triton-inference-server/tensorrtllm_backend/pull/482 and https://github.com/triton-inference-server/tensorrtllm_backend/pull/449.

Infrastructure Changes#

  • Base Docker image for TensorRT-LLM is updated to nvcr.io/nvidia/pytorch:24.05-py3.

  • Base Docker image for TensorRT-LLM backend is updated to nvcr.io/nvidia/tritonserver:24.05-py3.

  • The dependent TensorRT version is updated to 10.2.0.

  • The dependent CUDA version is updated to 12.4.1.

  • The dependent PyTorch version is updated to 2.3.1.

  • The dependent ModelOpt version is updated to v0.13.0.

Known Issues#

  • In a conda environment on Windows, installation of TensorRT-LLM may succeed. However, when importing the library in Python, you may receive an error message of OSError: exception: access violation reading 0x0000000000000000. This issue is under investigation.

TensorRT-LLM Release 0.10.0#

Announcements#

  • TensorRT-LLM supports TensorRT 10.0.1 and NVIDIA NGC 24.03 containers.

Key Features and Enhancements#

  • The Python high level API

    • Added embedding parallel, embedding sharing, and fused MLP support.

    • Enabled the usage of the executor API.

  • Added a weight-stripping feature with a new trtllm-refit command. For more information, refer to examples/sample_weight_stripping/README.md.

  • Added a weight-streaming feature. For more information, refer to docs/source/advanced/weight-streaming.md.

  • Enhanced the multiple profiles feature; --multiple_profiles argument in trtllm-build command builds more optimization profiles now for better performance.

  • Added FP8 quantization support for Mixtral.

  • Added support for pipeline parallelism for GPT.

  • Optimized applyBiasRopeUpdateKVCache kernel by avoiding re-computation.

  • Reduced overheads between enqueue calls of TensorRT engines.

  • Added support for paged KV cache for enc-dec models. The support is limited to beam width 1.

  • Added W4A(fp)8 CUTLASS kernels for the NVIDIA Ada Lovelace architecture.

  • Added debug options (--visualize_network and --dry_run) to the trtllm-build command to visualize the TensorRT network before engine build.

  • Integrated the new NVIDIA Hopper XQA kernels for LLaMA 2 70B model.

  • Improved the performance of pipeline parallelism when enabling in-flight batching.

  • Supported quantization for Nemotron models.

  • Added LoRA support for Mixtral and Qwen.

  • Added in-flight batching support for ChatGLM models.

  • Added support to ModelRunnerCpp so that it runs with the executor API for IFB-compatible models.

  • Enhanced the custom AllReduce by adding a heuristic; fall back to use native NCCL kernel when hardware requirements are not satisfied to get the best performance.

  • Optimized the performance of checkpoint conversion process for LLaMA.

  • Benchmark

    • [BREAKING CHANGE] Moved the request rate generation arguments and logic from prepare dataset script to gptManagerBenchmark.

    • Enabled streaming and support Time To the First Token (TTFT) latency and Inter-Token Latency (ITL) metrics for gptManagerBenchmark.

    • Added the --max_attention_window option to gptManagerBenchmark.

API Changes#

  • [BREAKING CHANGE] Set the default tokens_per_block argument of the trtllm-build command to 64 for better performance.

  • [BREAKING CHANGE] Migrated enc-dec models to the unified workflow.

  • [BREAKING CHANGE] Renamed GptModelConfig to ModelConfig.

  • [BREAKING CHANGE] Added speculative decoding mode to the builder API.

  • [BREAKING CHANGE] Refactor scheduling configurations

    • Unified the SchedulerPolicy with the same name in batch_scheduler and executor, and renamed it to CapacitySchedulerPolicy.

    • Expanded the existing configuration scheduling strategy from SchedulerPolicy to SchedulerConfig to enhance extensibility. The latter also introduces a chunk-based configuration called ContextChunkingPolicy.

  • [BREAKING CHANGE] The input prompt was removed from the generation output in the generate() and generate_async() APIs. For example, when given a prompt as A B, the original generation result could be <s>A B C D E where only C D E is the actual output, and now the result is C D E.

  • [BREAKING CHANGE] Switched default add_special_token in the TensorRT-LLM backend to True.

  • Deprecated GptSession and TrtGptModelV1.

Model Updates#

  • Support DBRX

  • Support Qwen2

  • Support CogVLM

  • Support ByT5

  • Support LLaMA 3

  • Support Arctic (w/ FP8)

  • Support Fuyu

  • Support Persimmon

  • Support Deplot

  • Support Phi-3-Mini with long Rope

  • Support Neva

  • Support Kosmos-2

  • Support RecurrentGemma

Fixed Issues#

    • Fixed some unexpected behaviors in beam search and early stopping, so that the outputs are more accurate.

  • Fixed segmentation fault with pipeline parallelism and gather_all_token_logits. (#1284)

  • Removed the unnecessary check in XQA to fix code Llama 70b Triton crashes. (#1256)

  • Fixed an unsupported ScalarType issue for BF16 LoRA. (https://github.com/triton-inference-server/tensorrtllm_backend/issues/403)

  • Eliminated the load and save of prompt table in multimodal. (https://github.com/NVIDIA/TensorRT-LLM/discussions/1436)

  • Fixed an error when converting the models weights of Qwen 72B INT4-GPTQ. (#1344)

  • Fixed early stopping and failures on in-flight batching cases of Medusa. (#1449)

  • Added support for more NVLink versions for auto parallelism. (#1467)

  • Fixed the assert failure caused by default values of sampling config. (#1447)

  • Fixed a requirement specification on Windows for nvidia-cudnn-cu12. (#1446)

  • Fixed MMHA relative position calculation error in gpt_attention_plugin for enc-dec models. (#1343)

Infrastructure changes#

  • Base Docker image for TensorRT-LLM is updated to nvcr.io/nvidia/pytorch:24.03-py3.

  • Base Docker image for TensorRT-LLM backend is updated to nvcr.io/nvidia/tritonserver:24.03-py3.

  • The dependent TensorRT version is updated to 10.0.1.

  • The dependent CUDA version is updated to 12.4.0.

  • The dependent PyTorch version is updated to 2.2.2.

TensorRT-LLM Release 0.9.0#

Announcements#

  • TensorRT-LLM requires TensorRT 9.3 and 24.02 containers.

Key Features and Enhancements#

  • [BREAKING CHANGES] TopP sampling optimization with deterministic AIR TopP algorithm is enabled by default

  • [BREAKING CHANGES] Added support for embedding sharing for Gemma

  • Added support for context chunking to work with KV cache reuse

  • Enabled different rewind tokens per sequence for Medusa

  • Added BART LoRA support (limited to the Python runtime)

  • Enabled multi-LoRA for BART LoRA

  • Added support for early_stopping=False in beam search for C++ Runtime

  • Added support for logits post processor to the batch manager

  • Added support for import and convert HuggingFace Gemma checkpoints

  • Added support for loading Gemma from HuggingFace

  • Added support for auto parallelism planner for high-level API and unified builder workflow

  • Added support for running GptSession without OpenMPI

  • Added support for Medusa IFB

  • [Experimental] Added support for FP8 FMHA, note that the performance is not optimal, and we will keep optimizing it

  • Added support for more head sizes for LLaMA-like models

    • NVIDIA Ampere (SM80, SM86), NVIDIA Ada Lovelace (SM89), NVIDIA Hopper (SM90) all support head sizes [32, 40, 64, 80, 96, 104, 128, 160, 256]

  • Added support for OOTB functionality

    • T5

    • Mixtral 8x7B

  • Benchmark features

    • Added emulated static batching in gptManagerBenchmark

    • Added support for arbitrary dataset from HuggingFace for C++ benchmarks

    • Added percentile latency report to gptManagerBenchmark

  • Performance features

    • Optimized gptDecoderBatch to support batched sampling

    • Enabled FMHA for models in BART, Whisper, and NMT family

    • Removed router tensor parallelism to improve performance for MoE models

    • Improved custom all-reduce kernel

  • Infrastructure features

    • Base Docker image for TensorRT-LLM is updated to nvcr.io/nvidia/pytorch:24.02-py3

    • The dependent PyTorch version is updated to 2.2

    • Base Docker image for TensorRT-LLM backend is updated to nvcr.io/nvidia/tritonserver:24.02-py3

    • The dependent CUDA version is updated to 12.3.2 (12.3 Update 2)

API Changes#

  • Added C++ executor API

  • Added Python bindings

  • Added advanced and multi-GPU examples for Python binding of executor C++ API

  • Added documents for C++ executor API

  • Migrated Mixtral to high-level API and unified builder workflow

  • [BREAKING CHANGES] Moved LLaMA convert checkpoint script from examples directory into the core library

  • Added support for LLM() API to accept engines built by trtllm-build command

  • [BREAKING CHANGES] Removed the model parameter from gptManagerBenchmark and gptSessionBenchmark

  • [BREAKING CHANGES] Refactored GPT with unified building workflow

  • [BREAKING CHANGES] Refactored the Qwen model to the unified build workflow

  • [BREAKING CHANGES] Removed all the LoRA related flags from convert_checkpoint.py script and the checkpoint content to trtllm-build command to generalize the feature better to more models

  • [BREAKING CHANGES] Removed the use_prompt_tuning flag, options from the convert_checkpoint.py script, and the checkpoint content to generalize the feature better to more models. Use trtllm-build --max_prompt_embedding_table_size instead.

  • [BREAKING CHANGES] Changed the trtllm-build --world_size flag to the --auto_parallel flag. The option is used for auto parallel planner only.

  • [BREAKING CHANGES] AsyncLLMEngine is removed. The tensorrt_llm.GenerationExecutor class is refactored to work with both explicitly launching with mpirun in the application level and accept an MPI communicator created by mpi4py.

  • [BREAKING CHANGES] examples/server are removed.

  • [BREAKING CHANGES] Removed LoRA related parameters from the convert checkpoint scripts.

  • [BREAKING CHANGES] Simplified Qwen convert checkpoint script.

  • [BREAKING CHANGES] Reused the QuantConfig used in trtllm-build tool to support broader quantization features.

  • Added support for TensorRT-LLM checkpoint as model input.

  • Refined SamplingConfig used in LLM.generate or LLM.generate_async APIs, with the support of beam search, a variety of penalties, and more features.

  • Added support for the StreamingLLM feature. Enable it by setting LLM(streaming_llm=...).

Model Updates#

  • Added support for distil-whisper

  • Added support for HuggingFace StarCoder2

  • Added support for VILA

  • Added support for Smaug-72B-v0.1

  • Migrate BLIP-2 examples to examples/multimodal

Limitations#

  • openai-triton examples are not supported on Windows.

Fixed Issues#

  • Fixed a weight-only quant bug for Whisper to make sure that the encoder_input_len_range is not 0. (#992)

  • Fixed an issue that log probabilities in Python runtime are not returned. (#983)

  • Multi-GPU fixes for multimodal examples. (#1003)

  • Fixed a wrong end_id issue for Qwen. (#987)

  • Fixed a non-stopping generation issue. (#1118, #1123)

  • Fixed a wrong link in examples/mixtral/README.md. (#1181)

  • Fixed LLaMA2-7B bad results when INT8 kv cache and per-channel INT8 weight only are enabled. (#967)

  • Fixed a wrong head_size when importing a Gemma model from HuggingFace Hub. (#1148)

  • Fixed ChatGLM2-6B building failure on INT8. (#1239)

  • Fixed a wrong relative path in Baichuan documentation. (#1242)

  • Fixed a wrong SamplingConfig tensor in ModelRunnerCpp. (#1183)

  • Fixed an error when converting SmoothQuant LLaMA. (#1267)

  • Fixed an issue that examples/run.py only load one line from --input_file.

  • Fixed an issue that ModelRunnerCpp does not transfer SamplingConfig tensor fields correctly. (#1183)

TensorRT-LLM Release 0.8.0#

Key Features and Enhancements#

  • Chunked context support (see docs/source/advanced/gpt-attention.md#chunked-context)

  • LoRA support for C++ runtime (see docs/source/lora.md)

  • Medusa decoding support (see examples/medusa/README.md)

    • The support is limited to Python runtime for Ampere or newer GPUs with fp16 and bf16 accuracy, and the temperature parameter of sampling configuration should be 0

  • StreamingLLM support for LLaMA (see docs/source/advanced/gpt-attention.md#streamingllm)

  • Support for batch manager to return logits from context and/or generation phases

    • Include support in the Triton backend

  • Support AWQ and GPTQ for QWEN

  • Support ReduceScatter plugin

  • Support for combining repetition_penalty and presence_penalty #274

  • Support for frequency_penalty #275

  • OOTB functionality support:

    • Baichuan

    • InternLM

    • Qwen

    • BART

  • LLaMA

    • Support enabling INT4-AWQ along with FP8 KV Cache

    • Support BF16 for weight-only plugin

  • Baichuan

    • P-tuning support

    • INT4-AWQ and INT4-GPTQ support

  • Decoder iteration-level profiling improvements

  • Add masked_select and cumsum function for modeling

  • Smooth Quantization support for ChatGLM2-6B / ChatGLM3-6B / ChatGLM2-6B-32K

  • Add Weight-Only Support To Whisper #794, thanks to the contribution from @Eddie-Wang1120

  • Support FP16 fMHA on NVIDIA V100 GPU

    Note

    Some features are not enabled for all models listed in the examples folder.

Model Updates#

  • Phi-1.5/2.0

  • Mamba support (see examples/mamba/README.md)

    • The support is limited to beam width = 1 and single-node single-GPU

  • Nougat support (see examples/multimodal/README.md#nougat)

  • Qwen-VL support (see examples/qwenvl/README.md)

  • RoBERTa support, thanks to the contribution from @erenup

  • Skywork model support

  • Add example for multimodal models (BLIP with OPT or T5, LlaVA)

Refer to the Software section for a list of supported models.

  • API

    • Add a set of LLM APIs for end-to-end generation tasks (see examples/llm-api/README.md)

    • [BREAKING CHANGES] Migrate models to the new build workflow, including LLaMA, Mistral, Mixtral, InternLM, ChatGLM, Falcon, GPT-J, GPT-NeoX, Medusa, MPT, Baichuan and Phi (see docs/source/new_workflow.md)

    • [BREAKING CHANGES] Deprecate LayerNorm and RMSNorm plugins and removed corresponding build parameters

    • [BREAKING CHANGES] Remove optional parameter maxNumSequences for GPT manager

  • Fixed Issues

    • Fix the first token being abnormal issue when --gather_all_token_logits is enabled #639

    • Fix LLaMA with LoRA enabled build failure #673

    • Fix InternLM SmoothQuant build failure #705

    • Fix Bloom int8_kv_cache functionality #741

    • Fix crash in gptManagerBenchmark #649

    • Fix Blip2 build error #695

    • Add pickle support for InferenceRequest #701

    • Fix Mixtral-8x7b build failure with custom_all_reduce #825

    • Fix INT8 GEMM shape #935

    • Minor bug fixes

  • Performance

    • [BREAKING CHANGES] Increase default freeGpuMemoryFraction parameter from 0.85 to 0.9 for higher throughput

    • [BREAKING CHANGES] Disable enable_trt_overlap argument for GPT manager by default

    • Performance optimization of beam search kernel

    • Add bfloat16 and paged kv cache support for optimized generation MQA/GQA kernels

    • Custom AllReduce plugins performance optimization

    • Top-P sampling performance optimization

    • LoRA performance optimization

    • Custom allreduce performance optimization by introducing a ping-pong buffer to avoid an extra synchronization cost

    • Integrate XQA kernels for GPT-J (beamWidth=4)

  • Documentation

    • Batch manager arguments documentation updates

    • Add documentation for best practices for tuning the performance of TensorRT-LLM (See docs/source/perf_best_practices.md)

    • Add documentation for Falcon AWQ support (See examples/falcon/README.md)

    • Update to the docs/source/new_workflow.md documentation

    • Update AWQ INT4 weight only quantization documentation for GPT-J

    • Add blog: Speed up inference with SOTA quantization techniques in TRT-LLM

    • Refine TensorRT-LLM backend README structure #133

    • Typo fix #739

TensorRT-LLM Release 0.7.1#

Key Features and Enhancements#

  • Speculative decoding (preview)

  • Added a Python binding for GptManager

  • Added a Python class ModelRunnerCpp that wraps C++ gptSession

  • System prompt caching

  • Enabled split-k for weight-only cutlass kernels

  • FP8 KV cache support for XQA kernel

  • New Python builder API and trtllm-build command (already applied to blip2 and OPT)

  • Support StoppingCriteria and LogitsProcessor in Python generate API

  • FHMA support for chunked attention and paged KV cache

  • Performance enhancements include:

    • MMHA optimization for MQA and GQA

    • LoRA optimization: cutlass grouped GEMM

    • Optimize Hopper warp specialized kernels

    • Optimize AllReduce for parallel attention on Falcon and GPT-J

    • Enable split-k for weight-only cutlass kernel when SM>=75

  • Added Workflow documentation

Model Updates#

  • BART and mBART support in encoder-decoder models

  • FairSeq Neural Machine Translation (NMT) family

  • Mixtral-8x7B model

  • Support weight loading for HuggingFace Mixtral model

  • OpenAI Whisper

  • Mixture of Experts support

  • MPT - Int4 AWQ / SmoothQuant support

  • Baichuan FP8 quantization support

Fixed Issues#

  • Fixed tokenizer usage in quantize.py #288

  • Fixed LLaMa with LoRA error

  • Fixed LLaMA GPTQ failure

  • Fixed Python binding for InferenceRequest issue

  • Fixed CodeLlama SQ accuracy issue

Known Issues#

  • The hang reported in issue #149 has not been reproduced by the TensorRT-LLM team. If it is caused by a bug in TensorRT-LLM, that bug may be present in that release.

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