<div dir="ltr"><div dir="ltr">On Wed, May 15, 2019 at 7:35 AM Eda Oktay via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>> wrote:<br></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="ltr">Hello,<div><br></div><div>I am trying to divide a matrix into unequal sized parts into different processors (for example I want to divide 10*10 matrix into 4*4 and 6*6 submatrix in two processors). When my program reads a matrix from file, it automatically divides it into equal parts and then I can't change local sizes.</div><div><br></div><div>How can I decompose a matrix that is read from a file?</div></div></blockquote><div><br></div><div>MatLoad() takes a matrix argument. I believe you can use MatSetSizes() before loading to get the distribution you want.</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Thanks,</div><div><br></div><div>Eda</div></div>
</blockquote></div><br clear="all"><div><br></div>-- <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="http://www.cse.buffalo.edu/~knepley/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div></div>