<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
<title></title>
</head>
<body text="#000000" bgcolor="#ffffff">
Hello,<br>
<br>
let me add that MUMPS has a nice manual that describes well the
error codes in Section 7. <br>
( <a class="moz-txt-link-freetext" href="http://graal.ens-lyon.fr/MUMPS/doc/userguide_4.10.0.pdf">http://graal.ens-lyon.fr/MUMPS/doc/userguide_4.10.0.pdf</a> ).<br>
<blockquote
cite="mid:mailman.7544.1312781400.6420.petsc-users@mcs.anl.gov"
type="cite">
<pre wrap="">Error reported by MUMPS in numerical factorization phase: INFO(1)=-1, INFO(2)=359
</pre>
</blockquote>
<br>
<blockquote
cite="mid:mailman.7544.1312781400.6420.petsc-users@mcs.anl.gov"
type="cite">
<pre wrap="">1) Does anybody know what the error INFO(1)=-1 means in MUMPS?
</pre>
</blockquote>
Regarding INFO(1) = -1 the manual says:<br>
"An error occurred on processor INFO(2)"<br>
I think that it works the way that all processes has the same
INFO(1) and INFO(2) except proc 359, which in fact contain the
'real' error in its INFO(1).<br>
<br>
According to my experience with MUMPS, if you solve on large number
of processors, you might get a bit underestimated sizes of work
arrays to allocate. One then needs to relax the estimate by
ICNTL(14) parameter which tells in percent how much memory to add to
the estimate. This is achieved through PETSc e.g. by command line
option -mat_mumps_icntl_14:<br>
<code>-ksp_type preonly -pc_type lu -pc_factor_mat_solver_package
mumps -mat_mumps_icntl_14 50</code><br>
which tells MUMPS to add 50% to the estimate. <br>
This might be worth trying, it resolves most of similar problems to
me, but I do not know if this is the source of your problems as
well. I am not sure if one can get to INFO(1) value on process 359
through PETSc.<br>
<br>
Best regards,<br>
<br>
Jakub<br>
<br>
<pre class="moz-signature" cols="72">--
Jakub Sistek, Ph.D.
postdoctoral researcher
Institute of Mathematics of the AS CR
<a class="moz-txt-link-freetext" href="http://www.math.cas.cz/~sistek/">http://www.math.cas.cz/~sistek/</a>
tel: (+420) 222 090 710</pre>
</body>
</html>