Ok. Thanks for the information.
Is there any particular advantage of using CM over TCP for this
information (LID or GID, Qp num, PSN, RKey and the address of the
writing buffer)?
Is ib_write_bw an example of RDMA write / RD?
E
Quoting Ido Shamai <i...@dev.mellanox.co.il>:
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
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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