<div class="gmail_quote">On Thu, Jun 16, 2011 at 11:14, khalid ashraf <span dir="ltr"><<a href="mailto:khalid_eee@yahoo.com">khalid_eee@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
When I look at the breakdown of the stages time required, the total add up to ~7s however, the main stage time is ~350s.</blockquote></div><br><div>Two possibilities:</div><div><br></div><div>1. The time is not in PETSc.</div>
<div><br></div><div>2. The matrix is not preallocated correctly.</div><div><br></div><div><a href="http://www.mcs.anl.gov/petsc/petsc-as/documentation/faq.html#efficient-assembly">http://www.mcs.anl.gov/petsc/petsc-as/documentation/faq.html#efficient-assembly</a></div>