You may specify:
--mca btl openib,sm,self
Application sometime runs fast, sometimes runs slow
When you specify the parameter above, open mpi will use only three btls
openib - for Infiniband
sm - for shared memory communication
self - for "self" communication
NO other btl will be used.
And Op
Quoting "Pavel Shamis (Pasha)" :
Teige, Scott W wrote:
Greetings,
I have observed strange behavior with an application running with
OpenMPI 1.2.8, OFED 1.2. The application runs in two "modes", fast
and slow. The exectution time is either within one second of 108 sec.
or within one second of 6
Teige, Scott W wrote:
Greetings,
I have observed strange behavior with an application running with
OpenMPI 1.2.8, OFED 1.2. The application runs in two "modes", fast
and slow. The exectution time is either within one second of 108 sec.
or within one second of 67 sec. My cluster has 1 Gig etherne
Greetings,
I have observed strange behavior with an application running with
OpenMPI 1.2.8, OFED 1.2. The application runs in two "modes", fast
and slow. The exectution time is either within one second of 108 sec.
or within one second of 67 sec. My cluster has 1 Gig ethernet and
DDR Infiniband so
