Merge pull request #3114 from JasonRuonanWang/ssc

fixed a bug in ssc which blocks MPI communications
ornladios · Mar 18, 2022 · 8c0b86b · 8c0b86b
2 parents 2406726 + afa34ae
commit 8c0b86b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/source/adios2/engine/ssc/SscReaderNaive.cpp b/source/adios2/engine/ssc/SscReaderNaive.cpp
@@ -42,7 +42,7 @@ StepStatus SscReaderNaive::BeginStep(const StepMode stepMode,
         MPI_Recv(&globalSize, 1, MPI_UNSIGNED_LONG_LONG,
                  m_WriterMasterStreamRank, 0, m_StreamComm, MPI_STATUS_IGNORE);
         m_Buffer.resize(globalSize);
-        MPI_Recv(m_Buffer.data(), globalSize, MPI_UNSIGNED_LONG_LONG,
+        MPI_Recv(m_Buffer.data(), globalSize, MPI_CHAR,
                  m_WriterMasterStreamRank, 0, m_StreamComm, MPI_STATUS_IGNORE);
     }