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MPI_AllreducePackageSize
Package Size of MPI Allreduce operations
On some architectures MPI_Allreduce operations were failing due to lack of memory as the MPI_Allreduce operation was carried out without packaging.
Depending on the hardware architecture used, it can be advantageous to play around with the size of the packages created.
MPI_AllreducePackageSize = 1e6
Default: MPI_AllreducePackageSize = 200000
If MPI_AllreducePackageSize = -1 then no packaging approach is used for MPI_Allreduce operations.
The maximum number of allowed packages is specified by MPI_AllreduceMaxNbPackages.
| This item is referenced in: | |
|---|---|
| MPI_AllreduceMaxNbPackages | Maximum Number of packages created per MPI Allreduce operation |
| MPI_AllreducePackageSize | Package Size of MPI Allreduce operations |
| Beta | Latest release notes for the MESHFREE beta executables |
| All | Complete release notes for the MESHFREE beta executables |