<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Oct 24, 2024, at 9:02 PM, Matthew Knepley <knepley@gmail.com> wrote:</div><br class="Apple-interchange-newline"><div><div dir="ltr"><div dir="ltr">On Thu, Oct 24, 2024 at 8:49 PM Diego Magela Lemos via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>> wrote:</div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Is there something similar to SciPy sparse block_array (<a href="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$" target="_blank">https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.block_array.html#scipy.sparse.block_array</a>) or bmat (<a href="https://urldefense.us/v3/__https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.bmat.html__;!!G_uCfscf7eWS!YANe4IC4s7Ki7CYmRbt0miQwrrFq7e-6_btfizr9d4vir0dzWIncCQBkH3Cbr94Y_jxGNSAhJh59aSOHAHREvOCba0s$" target="_blank">https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.bmat.html</a>) in PETSc? </div>
</blockquote></div><br clear="all"><div>Yes, MATNEST, but it does not convert the result to CSR.</div></div></div></blockquote><div><br></div> PetscCall(MatConvert(nest, MATAIJ, MAT_INITIAL_MATRIX, &aij));</div><div><br></div><div>will do a conversion if needed.</div><div><br><blockquote type="cite"><div><div dir="ltr"><div><br></div><div> Matt</div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!dZFqpGVfNQMRHO5CeKFJ1fh9RlQt32Q_DyPYhfwuFy6Xv40dl94COZfQKFh7xywfE8Z0FeFIBUrNHnl7ZGWP$" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div></div>
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