<div class="gmail_quote">On Wed, Nov 30, 2011 at 13:57, Barry Smith <span dir="ltr"><<a href="mailto:bsmith@mcs.anl.gov">bsmith@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div id=":27b">Right, so why not just use the AIJ format if you plan to use a direct Cholesky solver; only the upper triangular part of the factor is actually stored so the memory usage of AIJ for Cholesky is just the same as as of SBAIJ for Cholesky.,<br>
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In other words, if you want to use full Cholesky just use AIJ.<br></div></blockquote></div><br><div>Sure, I don't know how many people only have preallocation for SBAIJ.</div><div><br></div><div>What I care about is that -pc_type cholesky should do something halfway reasonable, certainly when called with an AIJ matrix for which ND makes sense.</div>