Re: [OMPI users] Checksuming in openmpi 1.4.1

2010-09-01 Thread Nysal Jan
Hi Gilbert, Checksums are turned off by default. If you need checksums to be activated add "-mca pml csum" to the mpirun command line. Checksums are enabled only for inter-node communication. Intra-node communication is typically over shared memory and hence checksum is disabled for this case. If y

[OMPI users] Checksuming in openmpi 1.4.1

2010-08-31 Thread Gilbert Grosdidier
Bonjour, I'm not sure I understand how to trigger CHECKSUM use inside of OpenMPI 1.4.1 (after digging in the FAQs, I got not explanations, sorry): - Is checksuming activated by default and embedded automatically within the Send/Recv pair mechanism, please ? - If not, which MCA param(S) should I