[ofw] Use of I/O completion port with Winverbs

[Fab Tillier]

Hi Christoph,

You can get the ND header files (included in the NetworkDirect DDK zip file) here:
http://www.microsoft.com/en-us/download/details.aspx?id=36043

There is no dependency on the HPC Pack - you just need drivers that support ND (ideally NDv2, which the Mellanox 4.40 release does).

Using ND should give you the greatest hardware independence too, though by design ND exposes the lowest common denominator functionality of iWARP and InfiniBand, so some functionality is not available (e.g. RDMA atomics).

Don’t hesitate to ask if you have questions.
-Fab

From: ofw-bounces at lists.openfabrics.org [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of Christoph Müller
Sent: Thursday, August 15, 2013 6:04 AM
To: Tzachi Dar; ofw at lists.openfabrics.org
Subject: Re: [ofw] Use of I/O completion port with Winverbs

Thank you. I was not aware that the SDK including NDv2 is distributed with Mellanox’ drivers. In this case, I will give it a try.

Thanks again,
Christoph

Von: Tzachi Dar [mailto:tzachid at mellanox.com]
Gesendet: Donnerstag, 15. August 2013 14:43
An: Christoph Müller; ofw at lists.openfabrics.org<mailto:ofw at lists.openfabrics.org>
Betreff: RE: Use of I/O completion port with Winverbs

You only need to download Mellanox drivers 4.40 for windows, and you will have nd support.

http://www.mellanox.com/page/products_dyn?product_family=32&mtag=windows_sw_drivers

Thanks
Tzachi


From: Christoph Müller [mailto:christoph.mueller at visus.uni-stuttgart.de]
Sent: Thursday, August 15, 2013 3:32 PM
To: Tzachi Dar; ofw at lists.openfabrics.org<mailto:ofw at lists.openfabrics.org>
Subject: AW: Use of I/O completion port with Winverbs

ndinstall is part of the HPC pack distribution? My main problem with ND is to find out how to get it...

Best regards,
Christoph

Von meinem Windows Phone gesendet
________________________________
Von: Tzachi Dar<mailto:tzachid at mellanox.com>
Gesendet: ‎15.‎08.‎2013 14:28
An: Christoph Müller<mailto:christoph.mueller at visus.uni-stuttgart.de>; ofw at lists.openfabrics.org<mailto:ofw at lists.openfabrics.org>
Betreff: RE: Use of I/O completion port with Winverbs
Please note that the windows APIs are changing from time to time and ND is probably the one that will stay longer since it is supported by MS.

I don’t think that you need to install the hpc pack for it. You simply need to run ndinstall and then you can start running nd programs.

Thanks
Tzachi

From: Christoph Müller [mailto:christoph.mueller at visus.uni-stuttgart.de]
Sent: Thursday, August 15, 2013 3:21 PM
To: Tzachi Dar; ofw at lists.openfabrics.org<mailto:ofw at lists.openfabrics.org>
Subject: AW: Use of I/O completion port with Winverbs

Actually, I am in the process of deciding which API to use (although I have existing librdma code). NetworkDirect indeed looks promising, but as I understand, I need HPC Pack 2012 for that which I cannot install on our cluster in the short term.

Best regards,
Christoph


Von meinem Windows Phone gesendet
________________________________
Von: Tzachi Dar<mailto:tzachid at mellanox.com>
Gesendet: ‎15.‎08.‎2013 14:15
An: Christoph Müller<mailto:christoph.mueller at visus.uni-stuttgart.de>; ofw at lists.openfabrics.org<mailto:ofw at lists.openfabrics.org>
Betreff: RE: Use of I/O completion port with Winverbs
can you write your application with Network Direct?
If so, there are overlapped objects there that you should be able to connect to the completion ports.

Thanks
Tzachi

From: ofw-bounces at lists.openfabrics.org<mailto:ofw-bounces at lists.openfabrics.org> [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of Christoph Müller
Sent: Thursday, August 15, 2013 3:10 PM
To: ofw at lists.openfabrics.org<mailto:ofw at lists.openfabrics.org>
Subject: [ofw] Use of I/O completion port with Winverbs

Hi all,

I was wondering whether it is possible to use CreateIoCompletionPort etc. with IWVConnectEndpoints. I can see that the implementation inherits a handle from CWVBase, but I do not see how I could use this information for creating an IOCP and, of course, I do not know whether it would work. Furthermore, I would prefer continuing to use the RDMA library, but I see absolutely no way to create an IOCP here. So me questions are:

Is it possible to use IOCPs with winverbs?
Is it possible to use IOCPs with the RDMA library?
Is there sample code for either of it?

Thanks in advance,
Christoph
--
Visualisierungsinstitut der Universität Stuttgart
Allmandring 19, 70569 Stuttgart
E-Mail: christoph.mueller at visus.uni-stuttgart.de<mailto:christoph.mueller at visus.uni-stuttgart.de>
Telefon: (07 11) 685 - 88626

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