Re: [OMPI devel] How to disable paffinity

2010-08-15 Thread Ralph Castain
There is no doubt you will lose performance, but remember that shared memory is -only- used between procs on the same node. So the performance penalty for multi-node applications is considerably less. Ultimately, the magnitude of the performance loss depends strongly on the design of the applic

Re: [OMPI devel] How to disable paffinity

2010-08-15 Thread 张晶
Hi Ralph, I wonder if I disable the btl-sm component ,the performance of message passing will degrade.I need to test how much performance are lost. The code quality now is far from to be integrated into trunk, I will try to clean up my code before sending these changes to you . 在 2010年8月13日 下午1