Re: perftest question

[Ido Shamai <idos-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>]

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, ib-x2spCj9RiN0z5UmgcLIfJQ@public.gmane.org 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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