Qlogic QME7342 Guía de usuario descargar pdf (Pagina 123)

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

1 2 ... 118 119 120 121 122 123 124 125 126 127 128 ... 283 284

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Qlogic QME7342 Guía de usuario Pagina 123