message: SSTWriter must resize the buffer after Init.
diff: @@ -145,6 +145,9 @@ StepStatus SstWriter::BeginStep(StepMode mode, const float timeout_sec)
  new format::BP3Serializer(m_Comm));
  m_BP3Serializer->Init(m_IO.m_Parameters,
  "in call to BP3::Open for writing", "sst");
  + m_BP3Serializer->ResizeBuffer(
  + m_BP3Serializer->m_Parameters.InitialBufferSize,
  + "in call to BP3::Open for writing by SST engine");
  m_BP3Serializer->m_MetadataSet.TimeStep = 1;
  m_BP3Serializer->m_MetadataSet.CurrentStep = m_WriterStep;
  }
  