Merge pull request #1084 from parthenon-hpc-lab/brryan/fix_swarm_mpi_…

…reqs Properly free swarm boundary MPI requests
parthenon-hpc-lab · May 21, 2024 · f9bb863 · f9bb863
2 parents 1bb0bd4 + 9094e3f
commit f9bb863
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -3,8 +3,9 @@
 ## Current develop
 
 ### Added (new features/APIs/variables/...)
-- [[PR1081]](https://github.com/parthenon-hpc-lab/parthenon/pull/1081) Add GetSize and GetIndex to sparse pack
-- [[PR1020]](https://github.com/parthenon-hpc-lab/parthenon/pull/1020) Add bi- and trilinear interpolation routines
+- [[PR 1084]](https://github.com/parthenon-hpc-lab/parthenon/pull/1084) Properly free swarm boundary MPI requests 
+- [[PR 1020]](https://github.com/parthenon-hpc-lab/parthenon/pull/1020) Add bi- and trilinear interpolation routines
+- [[PR 1081]](https://github.com/parthenon-hpc-lab/parthenon/pull/1081) Add GetSize and GetIndex to sparse pack
 - [[PR 1026]](https://github.com/parthenon-hpc-lab/parthenon/pull/1026) Particle BCs without relocatable device code
 - [[PR 1037]](https://github.com/parthenon-hpc-lab/parthenon/pull/1037) Add SwarmPacks
 - [[PR 1068]](https://github.com/parthenon-hpc-lab/parthenon/pull/1068) Add ability to dump sparse pack contents as a string

diff --git a/src/interface/swarm_comms.cpp b/src/interface/swarm_comms.cpp
@@ -644,7 +644,9 @@ void Swarm::ResetCommunication() {
 #ifdef MPI_PARALLEL
   for (int n = 0; n < pmb->neighbors.size(); n++) {
     NeighborBlock &nb = pmb->neighbors[n];
-    vbswarm->bd_var_.req_send[nb.bufid] = MPI_REQUEST_NULL;
+    if (vbswarm->bd_var_.req_send[nb.bufid] != MPI_REQUEST_NULL) {
+      MPI_Request_free(&(vbswarm->bd_var_.req_send[nb.bufid]));
+    }
   }
 #endif