Qlogic OFED+ Host, Руководство пользователя программного обеспечения

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6 – SHMEM Description and Configuration
SHMEM Benchmark Programs
6-28 IB0054606-02 A
Additional SHMEM micro-benchmark programs are included to measure get and
put performance with randomized PE selection and randomized target memory
locations, all-to-all communication patterns using put, barrier and reduce:
QLogic SHMEM random access benchmark
shmem-rand
: randomized
put
/
get
benchmark
This is actually a hybrid SHMEM/MPI code, so a binary is provided per
supported MPI implementation. It has the following command line options:
Usage:
shmem-rand [options] [list of message sizes]
.
Message sizes are specified in bytes (default = 8)
Options: See Table 6-5
-b INT
batch size, number of concurrent operations (default = 64)
-f
force order for bifurcation of PEs based on rank order
-h
displays the help page
-l INT
set minimum message size (default = 2)
-m INT
sets the maximum message size (default = 4194304)
Table 6-5. QLogic SHMEM random access benchmark options
Option Description
-a
use automatic (NULL) handles for NB ops (default explicit han-
dles)
-b
use a barrier every window
-c INTEGER
specify loop count (see also
-t
)
-f
fixed window size (default is scaled)
-h
displays the help page
-l
enable communication to local ranks
-m INTEGER[K]
memory size in MB (default = 8MB): or in KB with a K suffix
-n
use non-pipelined mode for NB ops (default pipelined)
Table 6-4. QLogic SHMEM micro-benchmarks options
Option Description