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sync_daemon_mpi: give daemon a distinct PMIX_NAMESPACE #514

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Merged
TApplencourt merged 1 commit into from
Jun 24, 2026
Merged

sync_daemon_mpi: give daemon a distinct PMIX_NAMESPACE #514

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5 changes: 5 additions & 0 deletions xprof/sync_daemon_mpi.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
#include "mpi.h"
#include <cstdlib>
#include <cstring>
#include <string>

using namespace daemon_proto;

Expand Down Expand Up @@ -125,6 +126,10 @@ int main(int argc, char **argv) {
}
const int fd = atoi(argv[1]);

// WA for MPI_Session bug when running concurrently with MPI apps.
if (const char *ns = getenv("PMIX_NAMESPACE"))
setenv("PMIX_NAMESPACE", (std::string(ns) + "_thapi_sync_daemon").c_str(), 1);

CHECK_MPI(MPIX_Init_Session(&lib_shandle, &MPI_COMM_WORLD_THAPI));
CHECK_MPI(MPI_Comm_split_type(MPI_COMM_WORLD_THAPI, MPI_COMM_TYPE_SHARED, 0, MPI_INFO_NULL,
&MPI_COMM_NODE));
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