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Requirement : I have a cluster of 4 machines and I want to get the collective latency and bandwidth for RDMA Write & RDMA Read operation in full mesh.

I used ib_write_lat/ib_read_lat for latency and ib_write_bw/ib_read_bw for bandwidth. But those are p2p and do not work on clusters.

I want to use a tool that is already available rather as with home grown tools publishing results will be a problem.

manu ks
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You can use MPI to run cluster-wide RDMA-enabled point-to-point or collective benchmarks

Checkout: http://mvapich.cse.ohio-state.edu/benchmarks/

Yuval Degani
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  • I see that for collective benchmarks there are lot of tests. How do we know how and what latency is the test is measuring? – manu ks Mar 17 '19 at 06:07