<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear FLASH users,<div class=""><br class=""></div><div class="">I am using FLASH, coupled with the astrophysics code AMUSE, to model star formation in clusters and cluster formation. I am able to run a test version of my simulation, but encounter some issues with refinement when I am trying to run a more involved version — with the same parameters, but a higher possible refinement.</div><div class=""><br class=""></div><div class="">During refinement, I get the following output (truncated) and error message:</div><div class=""><br class=""></div><div class=""><div class=""><font face="Courier" class=""> refined: total blocks = 585</font></div><div class=""><font face="Courier" class=""> iteration, no. not moved = 0 323</font></div><div class=""><font face="Courier" class=""> iteration, no. not moved = 1 27</font></div><div class=""><font face="Courier" class=""> iteration, no. not moved = 2 0</font></div><div class=""><font face="Courier" class=""> refined: total leaf blocks = 2311</font></div><div class=""><font face="Courier" class=""> refined: total blocks = 2641</font></div><div class=""><font face="Courier" class="">--------------------------------------------------------------------------</font></div><div class=""><font face="Courier" class="">MPI_ABORT was invoked on rank 45 in communicator MPI COMMUNICATOR 4 SPLIT FROM 0 </font></div><div class=""><font face="Courier" class="">with errorcode 4.</font></div><div class=""><font face="Courier" class=""><br class=""></font></div><div class=""><font face="Courier" class="">NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.</font></div><div class=""><font face="Courier" class="">You may or may not see output from other processes, depending on</font></div><div class=""><font face="Courier" class="">exactly when Open MPI kills them.</font></div></div><div class=""><font face="Courier" class=""><br class=""></font></div><div class="">From a few discussions I’ve had, I think the issue might have something to do with the spreading of the blocks on different processors — but I cannot find anything useful online. Have any of you encountered that error, or a similar error in the past ?</div><div class=""><br class=""></div><div class="">Best regards,</div><div class=""><br class=""></div><div class="">Claude</div><div class=""><br class=""></div><div class="">—</div><div class=""><br class=""><div class="">
<div>Claude Cournoyer-Cloutier</div><div>Master’s Candidate, McMaster University </div><div>Department of Physics & Astronomy</div><div class=""><br class=""></div><br class="Apple-interchange-newline">
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