Mark Olesen 80bc1db5b7 ENH: provide UPstream intra-host and inter-host communicators ... - simplifies communication structuring with intra-host communication. Can be used for IO only, or for specialised communication. Demand-driven construction. Gathers the SHA1 of host names when determining the connectivity. Internally uses an MPI_Gather of the digests and a MPI_Bcast of the unique host indices. NOTE: does not use MPI_Comm_splt or MPI_Comm_splt_type since these return MPI_COMM_NULL on non-participating process which does not easily fit into the OpenFOAM framework. Additionally, if using the caching version of UPstream::commInterHost() and UPstream::commIntraHost() the topology is determined simultaneously (ie, equivalent or potentially lower communication).		2023-04-18 14:08:39 +02:00
..
Make	ENH: add separate tracking of MPI_Comm_free, MPI_Group_free pending	2023-02-07 22:39:00 +01:00
Test-parallel-comm2.C	ENH: provide UPstream intra-host and inter-host communicators	2023-04-18 14:08:39 +02:00