Qlogic OFED+ Host, Software User'S Manual

Page: 123 / 284

6 – SHMEM Description and Configuration
Implementation Behavior
IB0054606-02 A 6-15
The command
shmemrun
automatically propagates
SHMEM*
environment
variables from its own environment to all the SHMEM processes. This means that
the environment variables can be simply setup in the front-end shell used to
invoke
shmemrun
. The command
shmemrun
also has its own environment
variables that are listed in Table 6-2 .
Implementation Behavior
Some SHMEM properties are not fully specified by the SHMEM API specification.
This section discusses the behavior for the QLogic SHMEM implementation.
$SHMEM_PUT_REPLY_COMBINING_COUNT
8 Number of consecutive put replies on a
flow to combine together into a single
reply.
Table 6-2.
shmemrun
Environment Variables
Environment Variable Default Description
$SHMEM_MPIRUN mpirun
from
the PATH
Specifies where to find
mpirun
.
$SHMEMRUN_VERBOSE
Enables verbose output for
shmemrun
.
$SHMEMRUN_SLEEP
Specifies a sleep time (in seconds) after
the job completes. This variable is
intended for testing use.
$SHMEMRUN_TIMEOUT
Specifies a time-out value (in seconds).
When the timeout value is reached, the
mpirun
is killed. This variable is
intended for testing use.
Table 6-1. SHMEM Run Time Library Environment Variables (Continued)
Environment Variable Default Description