Error checking: check status of collective call.

Ensure we check status for all collective calls correctly.

Error checking: check status of collective call.
Ensure we check status for all collective calls correctly.
557ec619 · Utkarsh Ayachit · d9555377 · 557ec619
Commit 557ec619 authored Jul 18, 2015 by Utkarsh Ayachit ⛰
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IO/MPIParallel/vtkMPIMultiBlockPLOT3DReader.cxx IO/MPIParallel/vtkMPIMultiBlockPLOT3DReader.cxx +5 -2

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--- a/IO/MPIParallel/vtkMPIMultiBlockPLOT3DReader.cxx
+++ b/IO/MPIParallel/vtkMPIMultiBlockPLOT3DReader.cxx
@@ -120,8 +120,11 @@ namespace

    int numIterations = static_cast<int>(valuesToRead/_INT_MAX) + 1;
    int maxNumIterations;
-    MPI_Allreduce(&numIterations, &maxNumIterations, 1, mpi_type<int>::type(),
-      MPI_MAX, *this->Communicator.GetHandle());
+    if (MPI_Allreduce(&numIterations, &maxNumIterations, 1, mpi_type<int>::type(),
+        MPI_MAX, *this->Communicator.GetHandle()) != MPI_SUCCESS)
+      {
+      throw MPIPlot3DException();
+      }

    vtkTypeUInt64 byteOffset = this->Offset;
    // simply use the VTK array for scalars.