Thank you,
So, maybe I have to *rewrite* my program because the way of output
should be appropriate to this strategy ?
On Mon, Dec 1, 2008 at 6:51 PM, Nicholas Karonis <[EMAIL PROTECTED]> wrote:
> Yes, it should. You will have to compile your program at
> both clusters first. If your application opens files (for
> input or output) then when each of your app's process does
> so it will be done on the local file system, which may require
> you to also move or copy input files before execution.
>
> The safe thing to do is to assume that the only thing your
> running processes can "see" of each other are the messages
> that that send to each other.
>
> Nick
>
>
> On Nov 30, 2008, at 11:34 PM, Le Trung Kien wrote:
>
> Hi,
>> I have a question that, if I have a program which is a parallel program
>> and work
>> properly in cluster with NFS sharing disk between computing nodes. But I
>> don't
>> know if it could work on two clusters (as two grids) with different NFS
>> sharing disks ?
>>
>>
>> On Thu, Nov 13, 2008 at 12:40 AM, Nicholas Karonis <[EMAIL PROTECTED]>
>> wrote:
>> mpich-g2 is far more battle-tested. MPIg is a complete re-write
>> with performance enhancements, especially when running on compute
>> nodes where there is more than one CPU.
>>
>> my advice would be to start with MPICH-G2 and migrate to MPIg
>> as you need more performance.
>>
>> nick
>>
>>
>> On Nov 12, 2008, at 9:19 AM, Yann JOBIC wrote:
>>
>> Hello,
>>
>> Thanks for the fast answer !
>>
>> So i have to choose between MPICH-G2 ans MPIg.
>> Which one is the most relevant to use ?
>> It seems that MPIg works with the last WS-GRAM of GT4. Is it better to use
>> this one ?
>>
>> Many thanks,
>>
>> Yann
>>
>>
>>
>> Nicholas Karonis wrote:
>> Dear Yann,
>>
>> Yes, it is possible to do that. Both MPICH-G2 and MPIg are MPI
>> libraries designed to do precisely that - including automatically
>> automatically converting data in messages sent between clusters
>> with different architectures.
>>
>> You can learn more about MPICH-G2 at www.niu.edu/mpi .
>> MPICH-G2 works only with pre-web services GRAM from the Globus Toolkit
>> (i.e., GT2).
>>
>>
>> You can learn more about MPIg (MPICH-G2's successor) via
>> anonymous ftp:
>>
>> The tarballs and instructions to build are all available on
>> NIU's anon ftp server ftp.cs.niu.edu: pub/karonis/MPIg.
>> There you can find mpig-1.0.6p1.1.tar.{bz2,gz} (same source,
>> compressed differently) and index.html (build instructions).
>>
>> MPIg works with the same pre-web services GRAM that MPICH-G2
>> does and it also works with WS-GRAM found in GT4.
>>
>> Nick
>>
>> On Nov 12, 2008, at 6:18 AM, Yann JOBIC wrote:
>>
>> Hello,
>>
>> I would like to know if, with globus, i can run a parallel program over 2
>> clusters (running gridengine) at the same time, with mpich communications
>> between the 2 clusters (and if the architecture is different too).
>> I made a figure which expose what i want to do. Cluster A and Cluster B
>> may have different architectures.
>>
>> Thanks,
>>
>> Yann
>>
>>
>>
>> --
>> ___________________________
>>
>> Yann JOBIC
>> HPC engineer
>> Polytech Marseille DME
>> IUSTI-CNRS UMR 6595
>> Technopôle de Château Gombert
>> 5 rue Enrico Fermi
>> 13453 Marseille cedex 13
>> Tel : (33) 4 91 10 69 39
>> ou (33) 4 91 10 69 43
>> Fax : (33) 4 91 10 69 69
>>
>>
>>
>>
>> --
>> Le Trung Kien.
>>
>
>
--
Le Trung Kien.
