I don't think too many people have done combined QLogic + Mellanox runs, so this probably isn't a well-explored space.
Can you run some microbenchmarks to see what kind of latency / bandwidth you're getting between nodes of the same type and nodes of different types? On Jul 14, 2011, at 8:21 PM, David Warren wrote: > On my test runs (wrf run just long enough to go beyond the spinup influence) > On just 6 of the the old mlx4 machines I get about 00:05:30 runtime > On 3 mlx4 and 3 qib nodes I get avg of 00:06:20 > So the slow down is about 11+% > When this is a full run 11% becomes a evry long time. This has held for some > longer tests as well before I went to ofed 1.6. > > On 07/14/11 05:55, Jeff Squyres wrote: >> On Jul 13, 2011, at 7:46 PM, David Warren wrote: >> >> >>> I finally got access to the systems again (the original ones are part of >>> our real time system). I thought I would try one other test I had set up >>> first. I went to OFED 1.6 and it started running with no errors. It must >>> have been an OFED bug. Now I just have the speed problem. Anyone have a way >>> to make the mixture of mlx4 and qlogic work together without slowing down? >>> >> What do you mean by "slowing down"? >> >> > <warren.vcf> -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
