On 05/17/2011 02:41 PM, Ido Shamai wrote:
Those are actually the same tests, from an IB point of view.
the difference between them is that ib_write_bw passes the arguments that need to be known to other side ( LID or GID,
Qp num, PSN, RKey and the address of the writing buffer) before post_sending,
through TCP connection (using sockets) and the rdma_bw uses the rdma_cm module , which sends those arguments through
the IB wire and the SM.
rdma_cm is not updated with all the features ib_write_bw have. I will work on
this test shortly
Ido
In addition, rdma_bw and rdma_lat work over iWARP when used with the --cma option. The ib_* versions do not since they
don't have a option to use the rdma_cm, which is required for setting up iWARP connections.
Steve.
On 5/17/2011 10:19 PM, i...@celticblues.com wrote:
Just downloaded a snapshot of the perftests. In the README under "Test
Descriptions" it says:
rdma_bw.c streaming BW test with RDMA write transactions
and
write_bw.c BW test with RDMA write transactions
What is the difference between rdma_bw and write_bw? I see that the rdma_bw description contains "streaming" where
as write_bw description does not... but I am not sure I understand what that means?
E
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