Add autotuning candidate filtering controls. Add MPI backend disablement option to autotune options struct.#154
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romerojosh wants to merge 2 commits into
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Add autotuning candidate filtering controls. Add MPI backend disablement option to autotune options struct.#154romerojosh wants to merge 2 commits into
romerojosh wants to merge 2 commits into
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Signed-off-by: romerojosh <joshr@nvidia.com>
Signed-off-by: romerojosh <joshr@nvidia.com>
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This PR introduces environment variable based filters of candidate backends and process dimensions to be used during the autotuning process. The new variables are:
CUDECOMP_AUTOTUNE_TRANSPOSE_BACKENDSis a include/exclude list of transpose backends to try during autotuning.CUDECOMP_AUTOTUNE_HALO_BACKENDSis a include/exclude list of halo backends to try during autotuning.CUDECOMP_AUTOTUNE_P_ROW_RANGE/CUDECOMP_AUTOTUNE_P_COL_RANGErestrict the respective candidate process dimension values during autotuning.See the updated docs for more detailed information on their use.
Additionally, this PR introduces a
disable_mpi_backendsflag in the autotuning options structs for users to programmatically disable MPI backends (to mirror the existing NCCL and NVSHMEM disablement flags).Note that this PR (along with #119) have modified the library ABI since the last release due to changes to the grid descriptor configuration and now autotuning options struct. A follow up PR is planned to address this and make the ABI more stable moving forward starting in the next release.