From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ido Shamai Subject: Re: perftest question Date: Tue, 17 May 2011 22:41:12 +0300 Message-ID: <4DD2CF58.5080806@dev.mellanox.co.il> References: <20110517131910.3dw9cgbfj4ck04cw@celticblues.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110517131910.3dw9cgbfj4ck04cw-x2spCj9RiN0z5UmgcLIfJQ@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: ib-x2spCj9RiN0z5UmgcLIfJQ@public.gmane.org Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.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 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html