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I'm not sure that MAT(S)BAIJ is what I need. My matrix symmetric,
but not block. <br>
Well, I solve vector equations and there are 2-3 blocks (depending
on the problem dimension), but this blocks normaly have size of >
10^5. So which block size should I specify to be efficient?<br>
<br>
Regards,<br>
Alexander<br>
<br>
On 30.11.2011 14:27, Alexander Grayver wrote:
<blockquote cite="mid:4ED62F4D.40806@gfz-potsdam.de" type="cite">
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Thanks Matt!<br>
<br>
Regards,<br>
Alexander<br>
<br>
On 30.11.2011 14:16, Matthew Knepley wrote:
<blockquote
cite="mid:CAMYG4GndEvO46nfEv81aZn=0OvwzyfzfUzNrgVJ_qsybF+9Law@mail.gmail.com"
type="cite">On Wed, Nov 30, 2011 at 3:43 AM, Alexander Grayver <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:agrayver@gfz-potsdam.de">agrayver@gfz-potsdam.de</a>></span>
wrote:<br>
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;"> Hello,<br>
<br>
I'm trying to use mumps through PETSc now with symmetric
matrix and cholesky factorization.<br>
When I use it directly I fill up only upper part of the
matrix and set mumid%SYM = 2. Is that possible to follow
same way with petsc?<br>
Which options do I have to choose?<br>
</blockquote>
<div><br>
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<div><a moz-do-not-send="true"
href="http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/Mat/MATSBAIJ.html">http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/Mat/MATSBAIJ.html</a></div>
<div><br>
</div>
<div> Matt</div>
<div> </div>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;"> Thanks in advance.<br>
<br>
Regards,<br>
<font color="#888888"> Alexander<br>
</font></blockquote>
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<br>
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-- <br>
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<br>
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<br>
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