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

[James Lentini]

FYI, you can find a kDAPL implementation for OpenIB at

svn/gen2/users/jlentini/linux-kernel

and a uDAPL implementation for OpenIB at

svn/gen2/users/jlentini/userspace

I can answer any questions you might have about these ULPs.

I'm not familiar with NAL, so I can't comment on which ULP is right 
for you.

On Wed, 6 Jul 2005, wangxigui wrote:

> 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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