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Add CSR SpMM and advanced SpMM kernels - #2044

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mlykov:csr-spmm
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Add CSR SpMM and advanced SpMM kernels#2044
mlykov wants to merge 1 commit into
ginkgo-project:developfrom
mlykov:csr-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.
  • Reference SpMM and OMP SpMM implementations.
  • CUDA/HIP and DPC++ stubs falling back to the existing SpMV kernels.
  • Reference and OMP tests for both the plain and advanced paths.

Related PR: #2044

More detailed comments:
+ spmm and advanced_spmm dispatched from apply() when nrhs > 2.
+ Reference SpMM and OMP SpMM implementations.
+ CUDA/HIP and DPC++ stubs falling back to the existing SpMV kernels.
+ Reference and OMP tests for both the plain and advanced paths.

Related PR: ginkgo-project#2044
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