[petsc-users] Kronecker Product

Guglielmo, Tyler Hardy guglielmo2 at llnl.gov
Mon Jan 30 11:53:23 CST 2023


Hi all,

I am wondering if there is any functionality for taking Kronecker products of large sparse matrices that are parallel?  MatSeqAIJKron is as close as I have found, but it seems like this does not work for parallel matrices.  Any ideas here?

An option could be to make A and B sequential, compute the Kronecker product, C, then scatter C into a parallel matrix?  This seems like a horribly inefficient procedure.  I’m still fairly new to petsc, so thanks for patience :)!

Best,
Tyler

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Tyler Guglielmo
Postdoctoral Researcher
Lawrence Livermore National Lab
Office: 925-423-6186
Cell: 210-480-8000
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