Re: [OMPI devel] btl_openib_exclusivity

2007-06-05 Thread George Bosilca
All BTLs have the exclusivity MCA parameter. This indicate how friendly a BTL is about sharing the communications with others BTLs. A very high exclusivity means there will be only one BTL. A low exclusivity means multiple BTLs can co-exist and work together to send the same message. All hi

[OMPI devel] btl_openib_exclusivity

2007-06-05 Thread Mohamad Chaarawi
I was going through the MCA btl parameters for openib and came across this parameter in which i didn't get what it actually does: MCA btl: parameter "btl_openib_exclusivity" (current value: "1024") BTL exclusivity (must be >= 0) anybody has any idea? -- Mohamad Chaara

Re: [OMPI devel] Multi-NIC support

2007-06-05 Thread Gleb Natapov
OK. I wanted to post my patch later this week, but you beat me to it, so here it is attached. But my approach is completely different and may coexist with yours. On Tue, Jun 05, 2007 at 12:03:55PM -0400, George Bosilca wrote: > The multi-NIC support was broken for a while. This patch correct it

[OMPI devel] Multi-NIC support

2007-06-05 Thread George Bosilca
The multi-NIC support was broken for a while. This patch correct it and take it back to the original performances (sum of bandwidths). The idea behind is to decide in the beginning how to split the message in fragments and their sizes and then only reschedule on the BTLs that complete a fra