<div dir="ltr">On Wed, Feb 20, 2013 at 8:08 PM, Teranishi, Keita <span dir="ltr"><<a href="mailto:knteran@sandia.gov" target="_blank">knteran@sandia.gov</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote">
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<div>Hi PETSc users.</div>
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<div>I just want to double-chcek if MatMultMPIAIJ requires matrix and vector to have the same data (row) partitioning. Otherwise, it throws PETSC_ERROR. Is it true?</div></div></blockquote><div><br></div><div style>Yes, in A * x ---> y, the column-layout of A must match x and the row-layout must match y.</div>
<div style><br></div><div style>We should raise an error in case of mismatch.</div></div></div></div>