Hi all, 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? parm: tiny_router_buffers:# of 0 payload messages to buffer in the router (int) parm: small_router_buffers:# of small (1 page) messages to buffer in the router (int) parm: large_router_buffers:# of large messages to buffer in the router (int) parm: peer_buffer_credits:# router buffer credits per peer (int) The CPU on the router node is less utilized than it was when I did back to back 10GE tests. I have 6 cores in the machine, 5 have been idle and one showing a load of about 60%. Michael -- Michael Kluge, M.Sc. Technische Universität Dresden Center for Information Services and High Performance Computing (ZIH) D-01062 Dresden Germany Contact: Willersbau, Room A 208 Phone: (+49) 351 463-34217 Fax: (+49) 351 463-37773 e-mail: [email protected] WWW: http://www.tu-dresden.de/zih
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