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Would it be acceptable to use SPOOLES for the comparison? or is
MUMPS needed (I would like to avoid re-doing my installation).<br>
<br>
<div class="moz-cite-prefix">On 12/23/12 5:58 PM, Matthew Knepley
wrote:<br>
</div>
<blockquote
cite="mid:CAMYG4GmuhF7Jh7os3j9bLubuoMGnerxtN+tU=gzpeYmX+3UUXA@mail.gmail.com"
type="cite">
<div dir="ltr">On Sun, Dec 23, 2012 at 8:08 PM, Sanjay Govindjee <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:s_g@berkeley.edu" target="_blank">s_g@berkeley.edu</a>></span>
wrote:<br>
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Not sure what you
mean by where is your matrix? I am simply running ex6
in the ksp/examples/tests directory.<br>
<br>
The reason I ran this test is because I was seeing the
same behavior with my finite element code (on perfectly
benign problems).<br>
<br>
Is there a built-in test that you use to check that
superlu_dist is working properly with petsc?<br>
i.e. something you know that works with with petsc
3.3-p5?<br>
</div>
</blockquote>
<div><br>
</div>
<div style="">1) Run it on a SNES ex5 (or KSP ex2), which is
a nice Laplacian</div>
<div style=""><br>
</div>
<div style="">2) Compare with MUMPS</div>
<div style=""><br>
</div>
<div style=""> Matt</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> -sanjay
<div>
<div class="h5"><br>
<br>
<br>
<div>On 12/23/12 4:56 PM, Jed Brown wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Where is your matrix? It might be
ending up with a very bad pivot. If the problem
can be reproduced, it should be reported to the
SuperLU_DIST developers to fix. (Note that we do
not see this with other matrices.) You can also
try MUMPS.</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Sun, Dec 23, 2012 at
6:48 PM, Sanjay Govindjee <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:s_g@berkeley.edu"
target="_blank">s_g@berkeley.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> I
wanted to use SuperLU Dist to perform a
direct solve but seem to be encountering<br>
a problem. I was wonder if this is a know
issue and if there is a solution for it.<br>
<br>
The problem is easily observed using ex6.c
in src/ksp/ksp/examples/tests.<br>
<br>
Out of the box: make runex6 produces a
residual error of O(1e-11), all is well.<br>
<br>
I then changed the run to run on two
processors and add the flag<br>
-pc_factor_mat_solver_package spooles
this produces a residual error of
O(1e-11), all is still well.<br>
<br>
I then switch over to
-pc_factor_mat_solver_package superlu_dist
and the<br>
residual error comes back as 22.6637!
Something seems very wrong.<br>
<br>
My build is perfectly vanilla:<br>
<br>
export PETSC_DIR=/Users/sg/petsc-3.3-p5/<br>
export PETSC_ARCH=intel<br>
<br>
./configure --with-cc=icc --with-fc=ifort
\
-download-{spooles,parmetis,superlu_dist,prometheus,mpich,ml,hypre,metis}<br>
<br>
make PETSC_DIR=/Users/sg/petsc-3.3-p5/
PETSC_ARCH=intel all<br>
make PETSC_DIR=/Users/sg/petsc-3.3-p5/
PETSC_ARCH=intel test<span><font
color="#888888"><br>
<br>
-sanjay<br>
</font></span></div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</div>
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<pre cols="72">--
-----------------------------------------------
Sanjay Govindjee, PhD, PE
Professor of Civil Engineering
Vice Chair for Academic Affairs
779 Davis Hall
Structural Engineering, Mechanics and Materials
Department of Civil Engineering
University of California
Berkeley, CA 94720-1710
Voice: <a moz-do-not-send="true" href="tel:%2B1%20510%20642%206060" value="+15106426060" target="_blank">+1 510 642 6060</a>
FAX: <a moz-do-not-send="true" href="tel:%2B1%20510%20643%205264" value="+15106435264" target="_blank">+1 510 643 5264</a>
<a moz-do-not-send="true" href="mailto:s_g@berkeley.edu" target="_blank">s_g@berkeley.edu</a>
<a moz-do-not-send="true" href="http://www.ce.berkeley.edu/%7Esanjay" target="_blank">http://www.ce.berkeley.edu/~sanjay</a>
-----------------------------------------------
New Books:
Engineering Mechanics of Deformable
Solids: A Presentation with Exercises
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</pre>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <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
</div>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
-----------------------------------------------
Sanjay Govindjee, PhD, PE
Professor of Civil Engineering
Vice Chair for Academic Affairs
779 Davis Hall
Structural Engineering, Mechanics and Materials
Department of Civil Engineering
University of California
Berkeley, CA 94720-1710
Voice: +1 510 642 6060
FAX: +1 510 643 5264
<a class="moz-txt-link-abbreviated" href="mailto:s_g@berkeley.edu">s_g@berkeley.edu</a>
<a class="moz-txt-link-freetext" href="http://www.ce.berkeley.edu/~sanjay">http://www.ce.berkeley.edu/~sanjay</a>
-----------------------------------------------
New Books:
Engineering Mechanics of Deformable
Solids: A Presentation with Exercises
<a class="moz-txt-link-freetext" href="http://www.oup.com/us/catalog/general/subject/Physics/MaterialsScience/?view=usa&ci=9780199651641">http://www.oup.com/us/catalog/general/subject/Physics/MaterialsScience/?view=usa&ci=9780199651641</a>
<a class="moz-txt-link-freetext" href="http://ukcatalogue.oup.com/product/9780199651641.do">http://ukcatalogue.oup.com/product/9780199651641.do</a>
<a class="moz-txt-link-freetext" href="http://amzn.com/0199651647">http://amzn.com/0199651647</a>
Engineering Mechanics 3 (Dynamics)
<a class="moz-txt-link-freetext" href="http://www.springer.com/materials/mechanics/book/978-3-642-14018-1">http://www.springer.com/materials/mechanics/book/978-3-642-14018-1</a>
<a class="moz-txt-link-freetext" href="http://amzn.com/3642140181">http://amzn.com/3642140181</a>
-----------------------------------------------
</pre>
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