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All,<br>
<br>
The crashes on that ticket are probably caused by Fortran SAVE or
COMMON statements in the linear solvers. MUMPS had them for sure,
and given how old MA27 is it probably does too. There was some
discussion on the MUMPS list a while back about running multiple
instances of MUMPS, and if my memory serves me correctly it was done
by wrapping the SAVE statements with OMP THREADPRIVATE directives so
that global memory was separated for each instance. Since then
MUMPS might have been modified, I'll look through the old MUMPS list
and try and find the mail thread that had a working solution on it.
<br>
<br>
Damien <br>
<br>
On 25/07/2012 3:41 PM, George Zhou wrote:<br>
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<p class="MsoNormal">Hi, All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> <a moz-do-not-send="true"
href="https://projects.coin-or.org/Ipopt/ticket/167#comment:1">https://projects.coin-or.org/Ipopt/ticket/167#comment:1</a>,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">From Andreas’s comments, I think the
following two changes could make application run ipopt in
parallel, as long each thread only access its own instance of
ipopt<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">1)<span style="font:7.0pt
"Times New Roman""> </span></span><!--[endif]-->Declare
ipopt as TLS variable. (per thread based)<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">2)<span style="font:7.0pt
"Times New Roman""> </span></span><!--[endif]-->In
Ipopt/src/Common/IpTaggedObject.hpp, change the following two
variables as TLS variable or atomic ones:<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in">static Tag
unique_tag_;<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in">Tag tag_<o:p></o:p></p>
<p class="MsoNormal">Anyone has successful story to run multiple
instances of ipopt in one application?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">George<o:p></o:p></p>
<p class="MsoListParagraph"><o:p> </o:p></p>
</div>
<br>
<br>
<hr align="left" color="#000066" size="2" width="250">
<p align="left"><font color="#000066" face="Arial" size="2"><strong>
George Zhou</strong><font size="1"> </font><strong><font
size="1"><br>
</font></strong></font><font color="#000066"
face="Arial" size="2"><strong><font size="1">Senior Developer</font></strong></font><font
color="#000066" face="Arial" size="2"><br>
<br>
</font><font color="#000066" face="Arial" size="1"> Spot
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