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Add SELL-P SpMM and advanced SpMM kernels - #2045

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mlykov:sellp-spmm
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Add SELL-P SpMM and advanced SpMM kernels#2045
mlykov wants to merge 1 commit into
ginkgo-project:developfrom
mlykov:sellp-spmm

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@mlykov

@mlykov mlykov commented Jul 7, 2026

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More detailed comments:

  • spmm and advanced_spmm dispatched from apply() when nrhs > 2.
  • OMP SpMM implementation (Gustavson + parallel + SIMD).
  • Reference and CUDA/HIP/DPC++ stubs falling back to SpMV kernels.
  • OMP test comparing against the reference executor.

Related PR: #2045

More detailed comments:
+ spmm and advanced_spmm dispatched from apply() when nrhs > 2.
+ OMP SpMM implementation (Gustavson + parallel + SIMD).
+ Reference and CUDA/HIP/DPC++ stubs falling back to SpMV kernels.
+ OMP test comparing against the reference executor.
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