warp.optim.linear.CR

class warp.optim.linear.CR(

A,

b,

x,

tol=None,

atol=None,

maxiter=0,

M=None,

callback=None,

check_every=10,

use_cuda_graph=True,

*,

restart=None,

)

Pre-allocated state for the Conjugate Residual solver.

See LinearSolverState for the shared constructor parameters, plus:

Parameters:

• restart (int | None) – Optional positive number of iterations between restarts. Each restart recomputes b - A x and resets the search direction to limit finite-precision drift.

• A (array | BsrMatrix | LinearOperator)

• b (array)

• x (array)

• tol (float | None)

• atol (float | None)

• maxiter (float | None)

• M (array | BsrMatrix | LinearOperator | None)

• callback (Callable | None)

• check_every (int)

• use_cuda_graph (bool)

The preconditioner M may be freely changed (or toggled between None and a valid operator) between calls as long as the replacement operands match the construction-time shape, dtype, device, and batch layout.