[mvapich-discuss] Fail to run MPI program using MVAPICH2-1.5.1

[Ting-jen Yen]

Hello,

   Thanks for your response.  I tried to recompile the whole thing
later, but removed "--enable-romio --with-file-system=lustre" options
in the ./configure line, (which I added since I thought might improve
the performance of the system which is using Lustre file system), and it
seems that the MPI program does work now. I guess I shouldn't touch the
options I don't understand very well.

Thanks.

Ting-jen

於 2010/9/28 下午 10:12, Jonathan Perkins 提到:
> Hello, can you provide us with the backtrace of the mpi process(es)?
> Also, I'd like to know how these are being launched (which launcher,
> number of processes, etc...) and which processes you actually see
> running each machine.  Thanks.
>
> On Tue, Sep 28, 2010 at 2:48 AM, Ting-jen Yen<yentj at infowrap.com.tw>  wrote:
>>
>> We are setting up a cluster with InfiniBand interconnection.
>> The OS we are using is CentOS 5.4, along with the OpenIB
>> driver coming with it.
>>
>> We managed to compile MVAPICH2 1.5.1 without any problem.  But
>> when we used this MVAPICH2 to comile a simple "hello world" MPI
>> program and tried to run it, the program just hanged there
>> if we used more than one machines. (It ran OK if using only
>> one machine.)  When we checked processes using 'ps', we noticed
>> that processes of the MPI program on the first machine was using
>> almost 100% CPU time, while those on the rest machines was
>> using 0% CPU time.  It seems that the program stopped at "MPI_Init"
>> function.
>>
>> We tried MVAPICH 1.1 as well as older version of MVAPICH2, 1.2p1.
>> These two does not have the same problem, and is working fine.
>>
>> And idea what may cause such problem?
>>
>> (The compiler we used is Intel Compiler V11.1.  I do not have
>> the detail of InfiniBand HCA right now, though according to 'lspci'
>> command, it is with "Mellanox MT25208 InfiniHost III Ex" chip.)
>>
>> Thanks,
>>
>> Ting-jen
>>
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