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<div class="">On 21 Apr 2020, at 21:19, Rishank Diwan <<a href="mailto:rishank2610@gmail.com" class="">rishank2610@gmail.com</a>> wrote:</div>
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<div class="">Hello Roland and Ian,</div>
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<div class="">I did check for OpenMPI and MPICH package, it seems there is only one installed I am attaching the result so you can see.</div>
<div class="">I also checked the other two command to know the compatibility but they seem to have different path. </div>
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<div class="">"dpkg -S $(readlink -f $(ldd exe/cactus_sim | gawk '/<a href="http://libmpi.so/%7Bprint$3%7D'" class="">libmpi.so/{print$3}'</a>)) " gives "libopenmpi2:amd64: /usr/lib/x86_64-linux-gnu/openmpi/lib/libmpi.so.20.10.1" as output.</div>
<div class="">"dpkg -S $(readlink -f $(which mpirun))" gives "openmpi-bin: /usr/bin/orterun" as output.</div>
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<div>They are both openmpi, so that doesn't immediately throw up any red flags.</div>
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<div class="">I have tried "simfactory/bin/sim run static_tov --parfile=par/static_tov.par --procs=2" and "./simfactory/bin/sim create-run helloworld --parfile arrangements/CactusExamples/HelloWorld" and "exe/cactus_sim" in all the above cases I got the same
error message.</div>
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<div class="">I am also attaching the mpi.log file you asked for.</div>
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<div>From the dpkg output, you have both mpich and openmpi installed. </div>
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<div>ii mpich 3.3~a2-4 amd64 Implementation of the MPI Message Passing Interface standard</div>
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<div class="">ii openmpi-bin 2.1.1-8 amd64 high performance message passing library -- binaries</div>
<div class="">ii openmpi-common 2.1.1-8 all high performance message passing library -- common files</div>
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<div>Can you tell us the output of </div>
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<div>which mpicc</div>
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<div>It should be /usr/bin/mpicc</div>
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<div>Then type</div>
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<div>mpicc -show</div>
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<div>to see which MPI package it is using. It should be something like</div>
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<div>gcc -I/usr/lib/x86_64-linux-gnu/openmpi/include/openmpi -I/usr/lib/x86_64-linux-gnu/openmpi/include/openmpi/opal/mca/event/libevent2022/libevent -I/usr/lib/x86_64-linux-gnu/openmpi/include/openmpi/opal/mca/event/libevent2022/libevent/include -I/usr/lib/x86_64-linux-gnu/openmpi/include
-pthread -L/usr//lib -L/usr/lib/x86_64-linux-gnu/openmpi/lib -lmpi<br class="">
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<div>so we can see which one is the default? When you build the ET, the MPI thorn build script runs mpicc to find out which MPI to use.</div>
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<div>It's possible that you might have to uninstall mpich, but I'm not sure. There *shouldn't* be a fundamental reason why you can't have both installed and just use one of them, but there might be technical reasons why it doesn't work.</div>
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-- <br class="">
Ian<b class=""><span class="Apple-converted-space"> </span></b>Hinder<br class="">
Research Software Engineer<br class="">
University of Manchester, UK</div>
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