[openib-general] how to choose appropriate ULPs for application

[Woodruff, Robert J]

There exists a NAL that supports the old gen1 IBAL stack and
I thought that there was one for the gen1 topspin stack, but
there is not one yet for gen2. I suspect that someone will write
one pretty soon, but do not know if anyone has started this effort
yet or not.

 

-----Original Message-----
From: openib-general-bounces at openib.org [mailto:openib-general-bounces at openib.org] On Behalf Of wangxigui
Sent: Wednesday, July 06, 2005 7:09 AM
To: openib-general at openib.org
Subject: RE: [openib-general] how to choose appropriate ULPs for application

Thank you very much!
I'll read the materials that you supply.

     I have not described my plan clearly. I don't konw how to run lustre
on IB. Neither do I konw the lustre running in kernel space or user
space. Now the lustre NAL does not supports IB vapi. If I use IPoIB,
it works. But it doen not take take advantage of RDMA. Supporse
lustre NAL invoke SDP or uDAP, RDMA is enable.

    Invocation of Verb API to realize lustre NAL is my target. The SDP or
uDAP is first step.

Clem Cole said:
> The quick answer here is none of SDP, iSER/SRP or uDAPL for different
> reasons on each case
>
> kDAPL is the kernel API that is designed to handle a kernel application
> such as NFS, Lustre or the like.  See:
> 	http://www.datcollaborative.org/kdapl.html
>
> There is are already implementations of NFS/RDMA available:
> 	http://www.sourceforge.net/projects/nfs-rdma
>
> This should give you some hints on how to a distrubuted file system
> uses the kDAPL interface.
>
>
>
> -----Original Message-----
> From: openib-general-bounces at openib.org
> [mailto:openib-general-bounces at openib.org]On Behalf Of wxg at ict.ac.cn
> Sent: Wednesday, July 06, 2005 9:26 AM
> To: openib-general
> Subject: [openib-general] how to choose appropriate ULPs for application
>
>
> Hello！
>
>     We plan to run lustre on InfiniBand. But now lustre does not support
> IB.
> I know noting about the IB stack. So I think the IB Upper Layer
> Protocol(SDP, DAP) could be used to transport data for lustre.
> 	But there are too many ULPs over IB. I know little about them. As far as
> I konw, iSER/SRP is for SCSI command transportation. So, it seems both
> SDP and uDAP are OK for my plan. I cant tell the difference between them.
> Which one is better, SDP or DAP? I don't konw how to choose?
>
> 	Any suggestion is appreciated!
>
> 　　
>
> 　　　　　　　　致
> 礼！
>
> Sincerely yours
> Wang Xigui 王锡贵
> 2005-07-06
> --------------------
> Computer Architecture Laboratory
> Institute of Computing Technology
> Chinese Academy of Sciences
> Beijing,P.R.China
> Zip code: 100080
> Tel: +86-10-62564394(office)
> Email: wxg at ict.ac.cn
> 　　　　　　　　　　　　　　
> 　　　　　　　　　　　　　　
> 　　　　　　　　　　　　　　　　　
>


-- 
Sincerely yours
Wang Xigui 王锡贵
2005-07-06
--------------------
Computer Architecture Laboratory
Institute of Computing Technology
Chinese Academy of Sciences
Beijing,P.R.China
Zip code: 100080
Tel: +86-10-62565533-9314(office)
Email: wxg at ict.ac.cn

-- 
Sincerely yours
Wang Xigui 王锡贵
2005-07-06
--------------------
Computer Architecture Laboratory
Institute of Computing Technology
Chinese Academy of Sciences
Beijing,P.R.China
Zip code: 100080
Tel: +86-10-62565533-9314(office)
Email: wxg at ict.ac.cn

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