QLogic OFED+ Host Software User Guide, Rev. B

4–Running QLogic MPI on QLogic Adapters
QLogic MPI Details
Table 4-7. Environment Variables (Continued)
Name
Description
MPICH_CC
MPICH_CCC
MPICH_F90
MPIHOSTS
MPI_NPROCS
MPI_SHELL
PSM_DEVICES
PSC_MPIRUN_DEFAULTS_PATH
PSM_SHAREDCONTEXTS
PSM_SHAREDCONTEXTS_MAX
This variable selects the compiler to use for
mpicc, and others.
This variable selects the compiler to use for
mpicxx, and others.
This variable selects the compiler to use for
mpif90, and others.
This variable sets the name of the machines
(mpihosts) file.
Default: Unset
This variable specifies the number of MPI processes
to spawn.
Default: Unset
Specifies the name of the program to log into
remote hosts.
Default: ssh unless MPI_SHELL is defined.
Non-QLogic MPI users can set this variable to
enable running in shared memory mode on a single
node. This variable is automatically set for
QLogic MPI.
Default: PSM_DEVICES="self,ipath"
This variable sets the path to a user-local mpirun
defaults file.
Default:
/opt/infinipath/etc/mpirun.defaults
This variable overrides automatic context sharing
behavior. YES is equivalent to 1 (see Default).
Default: PSM_SHAREDCONTEXTS=1
This variable restricts the number of TrueScale
contexts that are made available on each node of
an MPI job.
Default:
PSM_SHAREDCONTEXTS_MAX=4 (QLE7140)
Up to 16 on (QLE7240 and QLE7280; set automatically
based on number of CPUs on node)
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