cuda::experimental::stf::cuda_try

Defined in include/cuda/experimental/__stf/utility/cuda_safe_call.cuh

template<auto fun, typename ...Ps>
auto cuda::experimental::stf::cuda_try(Ps&&... ps)

Calls a CUDA function and throws a cuda_exception in case of failure.

In this overload of cuda_try, the function name is passed explicitly as a template argument and also the first argument is omitted, as in cuda_try<cudaCreateStream>(). cuda_try will create a temporary of the appropriate type internally, call the specified CUDA function with the address of that temporary, and then return the temporary. For example, in the call cuda_try<cudaCreateStream>(), the created stream object will be returned. That way you can write auto stream = cuda_try<cudaCreateStream>(); instead of cudaStream_t stream; cudaCreateStream(&stream);. This invocation mode relies on the convention used by many CUDA functions with output parameters of specifying them in the first parameter position.

Limitations: Does not work with overloaded functions.

Template Parameters

• fun – Name of the CUDA function to invoke, cannot be the name of an overloaded function

• Ps – Parameter types to be forwarded

Parameters

ps – Arguments to be forwarded

Returns

auto (see below)