[petsc-users] Block sparse matrix

[Matthew Knepley]

On Thu, Oct 24, 2024 at 8:49 PM Diego Magela Lemos via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Is there something similar to SciPy sparse block_array (
> https://urldefense.us/v3/__https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.block_array.html*scipy.sparse.block_array__;Iw!!G_uCfscf7eWS!dZFqpGVfNQMRHO5CeKFJ1fh9RlQt32Q_DyPYhfwuFy6Xv40dl94COZfQKFh7xywfE8Z0FeFIBUrNHvp9rgVV$ 
> <https://urldefense.us/v3/__https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.block_array.html*scipy.sparse.block_array__;Iw!!G_uCfscf7eWS!YANe4IC4s7Ki7CYmRbt0miQwrrFq7e-6_btfizr9d4vir0dzWIncCQBkH3Cbr94Y_jxGNSAhJh59aSOHAHRESglgg7A$>)
> or bmat (
> https://urldefense.us/v3/__https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.bmat.html__;!!G_uCfscf7eWS!dZFqpGVfNQMRHO5CeKFJ1fh9RlQt32Q_DyPYhfwuFy6Xv40dl94COZfQKFh7xywfE8Z0FeFIBUrNHiq0Tphm$ 
> <https://urldefense.us/v3/__https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.bmat.html__;!!G_uCfscf7eWS!YANe4IC4s7Ki7CYmRbt0miQwrrFq7e-6_btfizr9d4vir0dzWIncCQBkH3Cbr94Y_jxGNSAhJh59aSOHAHREvOCba0s$>)
> in PETSc?
>

Yes, MATNEST, but it does not convert the result to CSR.

   Matt
-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://urldefense.us/v3/__https://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!dZFqpGVfNQMRHO5CeKFJ1fh9RlQt32Q_DyPYhfwuFy6Xv40dl94COZfQKFh7xywfE8Z0FeFIBUrNHtvyOnr5$  <https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!dZFqpGVfNQMRHO5CeKFJ1fh9RlQt32Q_DyPYhfwuFy6Xv40dl94COZfQKFh7xywfE8Z0FeFIBUrNHnl7ZGWP$ >
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