Hello,
It seems to me there is only one way to create a communication between
two MPI_COMM_WORLD : use MPI_Open_Port with a specific
IP + port address, and then MPI_comm_connect / MPI_comm_accept.
In order to ease the port number communication, the use of MPI_publish-name
/ MPI_lookup_name is a
Hi!
I am going to start my approach to parallel programming (on C or C++)
and I would like to know what should I learn/use, LAM MPI, OpenMPI, or
any other MPI implementation.
Can anyone advise me please?
I believe OpenMPI would be best, but I can't find any tutorial on OpenMPI.
Thank you very much
On Mar 23, 2006, at 9:28 PM, Brian Barrett wrote:
On Mar 23, 2006, at 5:32 PM, Michael Kluskens wrote:
I have Absoft version 8.2a installed on my OS X 10.4.5 system and
in order to do some testing I was trying to build OpenMPI
1.1a1r9364 with it and got the following funny result:
*** Fo
Actually, in a not-too-distant future release, there will be an option
to mpirun called "--connect" that will allow you to specify that this
job is to be connected to a specified earlier job. The run-time
environment will then spawn the new job and exchange all required
communication informatio
Thanks Ralph and Jean.
Is there any chances that this feature be added to the next release of
mpiexec (mpirun).
Thanks again
Ali,
Ralph Castain
Sent by: users-boun...@open-mpi.org
03/27/2006 08:44 AM
Please respond to
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*** 2nd CALL FOR PAPERS ***
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The constant MPI_ROOT is not universally defined in all current
shipping MPI implementations.
Is there any MPI function/call that requires MPI_ROOT?
From the complete reference it appears that MPI_ALLGATHER might be
the one routine.
This all relates to portability, code I write using Open
Ralph,
Interesting. How would the two jobs be 'connected' in this
scheme?
Would they share a single MPI_COMM_WORLD or would they both
be created with an intercommunicator to the other jobs
MPI_WORLD?
If so, how would that intercommmunicator be obtained in each
program?
Is this mode docum
MPI_ROOT is required for the rooted operations of the inter-communicator
collectives in MPI-2, I am not aware of that you need MPI_ROOT in
intra-communicator collectives as defined in MPI-1.
Thanks
Edgar
Michael Kluskens wrote:
The constant MPI_ROOT is not universally defined in all current
At the moment, this is still in "design" - all I've done for now is
breadboard a connection that places them effectively in the same
comm_world. Each process in both jobs is given the complete comm info
for all the processes. Details of the MPI interface, however, remain to
be determined by my
Edgar,
Thank you. I was using MPI_ROOT in a MPI_Bcast call from the parent
process where I spawn subprocesses and it worked fine in OpenMPI but
when it didn't work on another platform and the support engineers
solution was to define it as zero I started looking and couldn't find
anythin
We all think that Open MPI is fantastic, but we're a little biased.
FWIW, I used to be the lead developer on LAM/MPI, and I'll tell you that
the LAM guys are now spending the vast majority of their time on Open
MPI. Specifically: LAM is in maintenance mode.
For your code, most MPI implementation
MPI-2 chapter 7 is all about the extended collective operations -- for
each collective, it defines which process is supposed to pass in
MPI_ROOT, etc.
Specifically, check out MPI-2 section 7.3.2, "Operations that Move Data"
(it's a very long section; a sub-section for each MPI collective).
> ---
Howdy all,
This is kind of an oddball think to ask, but does anyone have a rhel_4_ia64
box they'd be will to let me finnish debugging mpich-1.2.7p1?
There's a memory corruption bug that shows up for mpich-1.2.6 and -1.2.7p1,
but only for the rhel_4_ia64, and I'd decided it was probably the comm p
On Mar 27, 2006, at 4:11 PM, Jeff Squyres (jsquyres) wrote:
For your code, most MPI implementations (Open MPI, LAM/MPI, etc.)
support the same API. So if it compiles/links with one, it *should*
compile/link with the others (assuming you coded it in an MPI-
conformant
way).
The MPI installe
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