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Subject: Re: [OMPI users] test OpenMPI without Internet access
From: Wen Hao Wang (wangwhao_at_[hidden])
Date: 2008-10-23 20:56:09


Hi Jeff:

Thanks! I will try that.

> On Oct 19, 2008, at 7:05 PM, Wen Hao Wang wrote:
>
>> I have one cluster without Internet connection. I want to test
>> OpenMPI functions on it. It seems MTT can not be used. Do I have any
>> other choice for the testing?
>>
>
> You can always run tests manually. MTT is simply our harness for
> automated testing, which *usually* (but not always) involves
> downloading the latest nightly snapshot from the IU web site.
>
> You can certainly configure MTT to use a local copy of Open MPI and
> not use the IU web nightly snapshot.
>
>> I have tried lamtest. "make -k check" gave a lot of IB related
>> warnings, indicating that my dat.conf file contained invalid entry.
>> Each machine of my cluster has one IB connectX adapter installed.
>> But do not know why lamtest detected that.
>>
>
>
> You must have built with udapl support. Open MPI will use as many
> interfaces as you have built for; if you have built support for udapl
> (which I do not believe we build by default on Linux -- you have to
> specifically ask for it to be built because [among other reasons] OMPI
> would prefer to use verbs, not udapl), then we initialize udapl at run
> time and if you have an illegal dat.conf file, then I'm guessing udapl
> is complaining about it. I don't know very much about udapl, so I
> can't give good guidance here (other than suggesting not building
> udapl support and just testing the native verbs support, which is
> where we put all of our effort for Linux/OpenFabrics/Open MPI support).
>
> OMPI's udapl support is mainly for Sun, because udapl *is* [currently]
> their high-performance network stack.
>
> --
> Jeff Squyres
> Cisco Systems

Wen Hao Wang
Email: wangwhao_at_[hidden]