message: BP5: Set default aggregation to TwoLevelShm, 1 aggregator per node, 1 file per aggregator, 4096 page size
diff: @@ -110,11 +110,11 @@ public:
  MACRO(NodeLocal, Bool, bool, false) \
  MACRO(verbose, Int, int, 0) \
  MACRO(CollectiveMetadata, Bool, bool, true) \
  - MACRO(NumAggregators, UInt, unsigned int, 999999) \
  + MACRO(NumAggregators, UInt, unsigned int, 0) \
  MACRO(NumSubFiles, UInt, unsigned int, 999999) \
  - MACRO(FileSystemPageSize, UInt, unsigned int, 65536) \
  + MACRO(FileSystemPageSize, UInt, unsigned int, 4096) \
  MACRO(AggregationType, AggregationType, int, \
  - (int)AggregationType::EveryoneWrites) \
  + (int)AggregationType::TwoLevelShm) \
  MACRO(AsyncTasks, Bool, bool, true) \
  MACRO(GrowthFactor, Float, float, DefaultBufferGrowthFactor) \
  MACRO(InitialBufferSize, SizeBytes, size_t, DefaultInitialBufferSize) \
  