Hi Andreas, Am 10.09.2010 um 16:35 schrieb Andreas Dilger:
> On 2010-09-10, at 08:23, Michael Kluge wrote: >> I have a Lustre 1.8.3 setup where I'd like to some lnet router performance >> tests with routing between DDR IB<->10GE networks. Currently I have three >> nodes, one with DDR IB, one with 10GE and one with both that does the >> routing. A first short lnet test shows 520-550 MB/s performance. >> >> Has anyone an idea which of the variables of the lnet module are worth >> playing with to get this number a bit closer to 1GB/s? > > I would start by testing the performance on just the 10GigE side, and then > separately on the IB side, to verify you are getting the expected performance > from the components before trying them both together. Often it is necessary > to tune the ethernet send/receive buffers. Ethernet back to back is at 950 MB/s. I have not looked at IB back to back yet. Michael -- Michael Kluge, M.Sc. Technische Universität Dresden Center for Information Services and High Performance Computing (ZIH) D-01062 Dresden Germany Contact: Willersbau, Room WIL A 208 Phone: (+49) 351 463-34217 Fax: (+49) 351 463-37773 e-mail: michael.kl...@tu-dresden.de WWW: http://www.tu-dresden.de/zih
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