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Hello Ed,</div>
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Thanks for reaching out!</div>
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We've actually got a fix for this in our master branch currently, so this will be fixed in our next release. If you're able to build based off of master, all should be good.<br>
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--Shane<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Darshan-users <darshan-users-bounces@lists.mcs.anl.gov> on behalf of Ed Karrels <edk@illinois.edu><br>
<b>Sent:</b> Friday, February 5, 2021 4:44 PM<br>
<b>To:</b> darshan-users@lists.mcs.anl.gov <darshan-users@lists.mcs.anl.gov><br>
<b>Subject:</b> [Darshan-users] Call to PMPI_Comm_free when DARSHAN_ENABLE_NONMPI is set</font>
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<div>Hello Darshan team,</div>
<div>When using Darshan to profile a non-MPI application using the DARSHAN_ENABLE_NONMPI flag, the application is crashing with these error messages:</div>
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<div>Attempting to use an MPI routine before initializing MPICH</div>
<div>Abort(671693573) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Comm_free: Invalid communicator, error stack:</div>
<div>PMPI_Comm_free(137): MPI_Comm_free(comm=0x996cf0) failed</div>
<div>PMPI_Comm_free(85).: Invalid communicator</div>
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<div>This is with darshan-3.2.1. In darshan-runtime/lib/darshan-core.c line 2039 there is a call to PMPI_Comm_free(&core->mpi_comm) that isn't protected with a check of "using_mpi". Should it be?</div>
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