Re: [OMPI users] How closely tied is a specific release of OpenMPI to the host operating system and other system software?

On 2/1/2011 5:02 PM, Jeffrey A Cummings wrote: I use OpenMPI on a variety of platforms: stand-alone servers running Solaris on sparc boxes and Linux (mostly CentOS) on AMD/Intel boxes, also Linux (again CentOS) on large clusters of AMD/Intel boxes. These platforms all have some version of the 1.3

Re: [OMPI users] How closely tied is a specific release of OpenMPI to the host operating system and other system software?

Thanks for all the good replies on this thread. I don't know if I'll be able to make a dent in the corporate IT bureaucracy but I'm going to try. From: Prentice Bisbal To: Open MPI Users List-Post: users@lists.open-mpi.org Date: 02/02/2011 11:35 AM Subject:Re: [OMPI users] H

Re: [OMPI users] OpenMPI version syntax?

The context was wrt the OpenMPI version that is bundled with a specific version of CentOS Linux which my IT folks are about to install on one of our servers. Since the most recent 1.4 stream version is 1.4.3, I'm afraid that 1.4-4 is really some variant of 1.4 (i.e., 1.4.0) and hence not that

Re: [OMPI users] Calculate time spent on non blocking communication?

Again, you can try the Peruse instrumentation. Configure OMPI with --enable-peruse. The instrumentation points might help you decide how you want to define the time you want to measure. Again, you really have to spend a bunch of your own time deciding what is meaningful to measure. Gustavo

Re: [OMPI users] OpenMPI version syntax?

On Feb 2, 2011, at 1:44 PM, Jeffrey A Cummings wrote: > I've encountered a supposed OpenMPI version of 1.4-4. Is the hyphen a typo > or is this syntax correct and if so what does it mean? Is this an RPM version number? It's fairly common for RPMs to add "-X" at the end of the version number.

Re: [OMPI users] Calculate time spent on non blocking communication?

On Feb 2, 2011, at 7:35 AM, Bibrak Qamar wrote: > Gus Correa, But it will include the time of computation which took place > before waitAll( ). > Correct. Now I realize you want the communication time only, not the overall time. Even to define precisely what this means may be a bit tricky. I g

Re: [OMPI users] Check whether non-blocking communication has finished?

I think ultimately it would comes down to whether code execution is more important than receiving the message in a timely fashion. On 2/2/11, amjad ali wrote: > Perhaps often it is more useful to use MPI_WAIT rather than MPI_TEST type > fucntions, because at MPI_WAIT point it will be taken care o

Re: [OMPI users] Check whether non-blocking communication has finished?

Perhaps often it is more useful to use MPI_WAIT rather than MPI_TEST type fucntions, because at MPI_WAIT point it will be taken care of communication completion, automatically, which may be necessary before going ahead. with MPI_TEST it would become the responsibility of the programmer to handle th

[OMPI users] OpenMPI version syntax?

I've encountered a supposed OpenMPI version of 1.4-4. Is the hyphen a typo or is this syntax correct and if so what does it mean? - Jeff

Re: [OMPI users] heterogenous cluster

Thaks all I did the simple copying of the 32Bit applications and now it works. Thanks Jody On Wed, Feb 2, 2011 at 5:47 PM, David Mathog wrote: > jody wrote: > >> How can i force OpenMPI to be built as a 32Bit application on a 64Bit > machine? > > THe easiest way is not to - just copy over a

Re: [OMPI users] Segmentation fault with SLURM and non-local nodes

Hi, We'll try to reproduce the problem. Thanks, -- Samuel K. Gutierrez Los Alamos National Laboratory On Feb 2, 2011, at 2:55 AM, Michael Curtis wrote: On 28/01/2011, at 8:16 PM, Michael Curtis wrote: On 27/01/2011, at 4:51 PM, Michael Curtis wrote: Some more debugging information: Is

Re: [OMPI users] heterogenous cluster

jody wrote: > How can i force OpenMPI to be built as a 32Bit application on a 64Bit machine? THe easiest way is not to - just copy over a build from a 32 bit machine, it will run on your 64 bit machine if the proper 32 bit libraries have been installed there. Otherwise, you need to put -m32 on

Re: [OMPI users] How closely tied is a specific release of OpenMPI to the host operating system and other system software?

Jeffrey A Cummings wrote: > I use OpenMPI on a variety of platforms: stand-alone servers running > Solaris on sparc boxes and Linux (mostly CentOS) on AMD/Intel boxes, > also Linux (again CentOS) on large clusters of AMD/Intel boxes. These > platforms all have some version of the 1.3 OpenMPI stre

Re: [OMPI users] heterogenous cluster

jody wrote: Thanks for your reply. If i try your suggestion, every process fails with the following message: *** The MPI_Init() function was called before MPI_INIT was invoked. That's a funny error message. If you search the OMPI users mail list archives, this message shows up, but I didn

Re: [OMPI users] Calculate time spent on non blocking communication?

Bibrak Qamar wrote: Gus Correa, But it will include the time of computation which took place before waitAll( ). What's wrong with that? From: Bibrak Qamar I am using non-blocking send and receive, and i want to calculate the time it took for the communication. F

Re: [OMPI users] How closely tied is a specific release of OpenMPIto the host operating system and other system software?

Hey, I work for Platform Computing, we do have our clustering tool as well and I play a lot with others (PCM, ROCKS, xCAT, Unicluster ...). I never ran into any problem switching OpenMPI versions. In my case I use environment modules and it just works like a charm :-) You can also have modules dep

Re: [OMPI users] How closely tied is a specific release of OpenMPI to the host operating system and other system software?

On Feb 2, 2011, at 7:02 AM, Terry Dontje wrote: > 2. The system libraries on different linux versions are not always the same. > At Oracle we build a binary distribution of OMPI that we test out on several > different versions of Linux. The key here is building on a machine that is > essenti

Re: [OMPI users] Check whether non-blocking communication has finished?

Yes; you can use any of the various flavors of the MPI_TEST* functions. On Feb 2, 2011, at 7:03 AM, Bibrak Qamar wrote: > Hello All, > > Is there any way to find whether a non blocking communication has finished > without calling the wait( ) function. > > > Thanks > Bibrak Qamar > Undergradua

Re: [OMPI users] Calculate time spent on non blocking communication?

Gus Correa, But it will include the time of computation which took place before waitAll( ). List-Post: users@lists.open-mpi.org Date: Tue, 1 Feb 2011 10:09:03 +0400 From: Bibrak Qamar Subject: [OMPI users] Calculate time spent on non blocking communication? To: us...@open-mpi.org Message-

[OMPI users] Check whether non-blocking communication has finished?

Hello All, Is there any way to find whether a non blocking communication has finished without calling the wait( ) function. Thanks Bibrak Qamar Undergraduate Student BIT-9 Member Center for High Performance Scientific Computing NUST-School of Electrical Engineering and Computer Science.

Re: [OMPI users] How closely tied is a specific release of OpenMPI to the host operating system and other system software?

On 02/01/2011 07:34 PM, Jeff Squyres wrote: On Feb 1, 2011, at 5:02 PM, Jeffrey A Cummings wrote: I'm getting a lot of push back from the SysAdmin folks claiming that OpenMPI is closely intertwined with the specific version of the operating system and/or other system software (i.e., Rocks on

Re: [OMPI users] Segmentation fault with SLURM and non-local nodes

On 28/01/2011, at 8:16 PM, Michael Curtis wrote: > > On 27/01/2011, at 4:51 PM, Michael Curtis wrote: > > Some more debugging information: Is anyone able to help with this problem? As far as I can tell it's a stock-standard recently installed SLURM installation. I can try 1.5.1 but hesitant

Re: [OMPI users] heterogenous cluster

Jody, With the gnu compilers the -m32 flag works. With other compilire's the same or other flag should work. Doug Reeder On Feb 1, 2011, at 11:46 PM, jody wrote: > Thanks for your reply. > > If i try your suggestion, every process fails with the following message: > > *** The MPI_Init() fun

Re: [OMPI users] heterogenous cluster

Thanks for your reply. If i try your suggestion, every process fails with the following message: *** The MPI_Init() function was called before MPI_INIT was invoked. *** This is disallowed by the MPI standard. *** Your MPI job will now abort. [aim-triops:15460] Abort before MPI_INIT completed succ