Dear Ake,
The Vangelis' email has two parts: First, he has problem with running
MPI job on EGEE GRID TESTBED with TAG LCG2_3_0. Second, he asked how to
use mpiexec on Grid.
Basically, I tried to help him on the first one. As you may know, the
LCG currently DOES NOT support MPI. In this case, one need to do some
extra configuration in order to run MPI job. According my experience,
the meintioned 3 steps are needed to be done. Thus I wrote to him.
Regarding the mpiexec, I am also interested in. Can possible please
kindly tell me how to config the Grid nodes (LCG 2_3_0 with redhat 7.3)
in order to use it? Thanks.
Best regards
Wei Xing
University of Cyprus
Ake wrote:
>On Wed, Jan 19, 2005 at 09:12:14AM +0200, Wei Xing wrote:
>
>
>>Hi, Vangelis,
>>
>>Regarding your mail:
>>
>>1) MPI and MPICH are different, which one you want to support? Beowulf
>>normally goes to "MPI".
>>2) Not sure what you exactly mean "have been publishing the MPICH tag
>>for HG-01-GRNET"?
>> Do you mean you just setup the RunEnvironmnet of CE? Need to be
>>checked:
>> a) all worker nodes need to share CE /home directory.
>>
>>
>
>
>
>> b) setup "PASSWORDLESS" ssh login between CE and WN, _AND_,
>>between WN and WN (this is very important to run a MPI job on your
>>site).
>>
>>
>
>This is BAD!!!!! Use mpiexec instead.
>NEVER use passwordless logins!!!!!!
>
>--
>Ake Sandgren, HPC2N, Umea University, S-90187 Umea, Sweden
>Internet: [log in to unmask] Phone: +46 90 7866134 Fax: +46 90 7866126
>Mobile: +46 70 7716134 WWW: http://www.hpc2n.umu.se
>
>
--
============================================================
Wei Xing, M.Sc.
Research Associate Tel: 00357-22892663
Dept. of Computer Science Fax: 00357-22892701
University of Cyprus email: [log in to unmask]
PO Box 20537
CY1678, Nicosia, CYPRUS
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