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<p>Hi,</p>
<p>good point, I changed the 3.10 version so that it is configured
with --with-debugging=0. You'll find attached the output of the
new LogView. The execution time is reduced (although still not as
good as 3.6) but I can't see any improvement with regard to
memory.</p>
<p>You'll also find attached the grep GAMG on -info outputs for both
versions. There are slight differences in grid dimensions or nnz
values, but is it significant?</p>
<p>Thanks,<br>
</p>
<p>Myriam<br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">Le 03/08/19 à 23:23, Mark Adams a
écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CADOhEh4FqanoNjfy1rKgLp3LShEiDg+79E-Y_3jTdgFrFrcuRg@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<div dir="ltr">Just seeing this now. It is hard to imagine how bad
GAMG could be on a coarse grid, but you can run with -info and
grep on GAMG and send that. You will see listing of levels,
number of equations and number of non-zeros (nnz). You can send
that and I can get some sense of GAMG is going nuts.
<div><br>
</div>
<div>Mark</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Mar 8, 2019 at 11:56
AM Jed Brown via petsc-users <<a
href="mailto:petsc-users@mcs.anl.gov" moz-do-not-send="true">petsc-users@mcs.anl.gov</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">It
may not address the memory issue, but can you build 3.10 with
the<br>
same options you used for 3.6? It is currently a debugging
build:<br>
<br>
##########################################################<br>
#
#<br>
# WARNING!!!
#<br>
#
#<br>
# This code was compiled with a debugging
option. #<br>
# To get timing results run ./configure
#<br>
# using --with-debugging=no, the performance
will #<br>
# be generally two or three times faster.
#<br>
#
#<br>
##########################################################<br>
<br>
</blockquote>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Myriam Peyrounette
CNRS/IDRIS - HLST
--
</pre>
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