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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal">I’m working on someone else’s cluster and the mpi is not well setup (i.e. not working).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I compiled my own mpich2 using <o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">./configure --with-pmi=slurm --with-pm=no --prefix=/home/biddisco/apps/mpich2-1.5 --enable-shared --disable-static<o:p></o:p></span></p>
<p class="MsoNormal">And a simple hello world executed using srun, works as expected and I get the ranks from all nodes responding correctly.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When I used mpiexec previously, I ran an MPMD command like this<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">mpiexec -n 4 -env <span style="color:red">
DISPLAY :0.0 </span>/home/biddisco/build/pv-38/bin/pvserver -rc -ch=128.178.187.20 -sp=11111 : -n 4 -env
<span style="color:red">DISPLAY :0.1 </span>/home/biddisco/build/pv-38/bin/pvserver -rc -ch=128.178.187.20 -sp=11111 : -n 4 -env
<span style="color:red">DISPLAY :0.2 </span>/home/biddisco/build/pv-38/bin/pvserver -rc -ch=128.178.187.20 -sp=11111<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I need each of the 3 sets of mpi ranks to have a different DISPLAY environment variable to correctly utilise the GPUs.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Unfortunately, the mpiexec on the machine does not work with slurm and I’d like to use
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">srun –n XXX –env XXX /program : –n XXX –env YYY /program ...<o:p></o:p></span></p>
<p class="MsoNormal">etc etc<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">but srun doesn’t have an option to pass command line environment vars to the mpi processes. I just can’t find a way of launching an MPMD job using srun with different env vars.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there another way?<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"><o:p> </o:p></p>
<p class="MsoNormal">JB<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:EN-GB">--
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:EN-GB">John Biddiscombe, email:biddisco @.at.@ cscs.ch<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:EN-GB"><a href="http://www.cscs.ch/"><span style="color:windowtext">http://www.cscs.ch/</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:EN-GB">CSCS, Swiss National Supercomputing Centre | Tel: +41 (91) 610.82.07<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:EN-GB">Via Trevano 131, 6900 Lugano</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:EN-GB">, Switzerland | Fax:
+41 (91) 610.82.82<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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