From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Bharath Ramesh" Subject: RE: IB atomic operations Date: Fri, 25 Feb 2011 11:04:10 -0500 Message-ID: <00e401cbd505$a437bc60$eca73520$@edu> References: <00b701cbd4bd$e271fe20$a755fa60$@edu> <4D67D17C.7000405@systemfabricworks.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="----=_NextPart_000_00DF_01CBD4DB.BAB595E0"; protocol="application/x-pkcs7-signature"; micalg=SHA1 Return-path: In-Reply-To: <4D67D17C.7000405-klaOcWyJdxkshyMvu7JE4pqQE7yCjDx5@public.gmane.org> Content-Language: en-us Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: 'frank zago' Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org This is a multi-part message in MIME format. ------=_NextPart_000_00DF_01CBD4DB.BAB595E0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit > -----Original Message----- > From: frank zago [mailto:fzago-klaOcWyJdxkshyMvu7JE4pqQE7yCjDx5@public.gmane.org] > > On 02/25/2011 01:30 AM, Bharath Ramesh wrote: > > Hi, > > I am trying to use IB atomic operations, specifically fetch and > add. > > I tried a small example but I am unable to get it to work. The WC > status is > > IBV_WC_REM_INV_REQ_ERR. My sample code is as follows: > > Did you register your memory with IBV_ACCESS_REMOTE_ATOMIC ? I have registered both the remote and local data with IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_ATOMIC | IBV_ACCESS_REMOTE_READ | IBV_ACCESS_REMOTE_WRITE I am not sure if the vendor err code is of any help but it is 138. I am also using Mellanox ConnectX-2 QDR cards. 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