HP-MPI V2.3 for Linux Release Note

1 [0..64] 8 0 0.308 api
api
The use of the api option to MPI_INSTR is available only on HP hardware. Usage on
non-HP hardware will result in an error message.
1.2.7.14 New mpirun option -xrc
HP-MPI V2.3 has added support for the -xrc option to mpirun.
Extended Reliable Connection (XRC) is a new feature on ConnectX InfiniBand adapters.
Depending on the number of application ranks that are allocated to each host, XRC
can significantly reduce the amount of pinned memory that is used by the InfiniBand
driver. Without XRC, the memory amount is proportional to the number of ranks in
the job. With XRC, the memory amount is proportional to the number of hosts on which
the job is being run.
The -xrc option is equivalent to -srq -e MPI_IBV_XRC=1.
OFED version 1.3 or later is required to use XRC.
1.2 What’s in This Version 23