Re: [OMPI users] Strange problem

Hai Ralph, i've tried --nolocal flag, but doesn't works .. :( The error is the same. 2009/2/20 Ralph Castain : > Hi Gabriele > > Could be we have a problem in our LSF support - none of us have a way of > testing it, so this is somewhat of a blind programming case for us. > > From

[OMPI users] Problem with MPI_Comm_spawn_multiple & MPI_Info_free

Hi,   I have a program that allow user to enter their choice of operation. For example, when the user enter '4', the program will enter a function which will spawn some other programs stored in the same directory. When the user enter '5', the program will enter another function to request all

Re: [OMPI users] Problem with MPI_Comm_spawn_multiple & MPI_Info_free

Could you tell us what version of Open MPI you are using? It would help us to provide you with advice. Thanks Ralph On Mar 9, 2009, at 2:18 AM, Tee Wen Kai wrote: Hi, I have a program that allow user to enter their choice of operation. For example, when the user enter '4', the program

Re: [OMPI users] Run-time problem

Did you try compiling your program with the provided mpicc (or mpiCC, mpif90, etc. - as appropriate) wrapper compiler? The wrapper compilers contain all the required library definitions to make the application work. Compiling without the wrapper compilers is a very bad idea... Ralph On

[OMPI users] on-the-fly nodes liberation

Hi, May I sign one orted daemon to finish its execution on-the-fly? Context: I intend to use OpenMPI in a dynamic resource environment as I did with LAM/MPI helped by lamgrow and lamshrink commands. To perform grow operations (increase the amount of nodes/resources on-the-fly) OpenMPI enable an

Re: [OMPI users] on-the-fly nodes liberation

I'm afraid not - once started, the orted must stay alive until mpirun terminates. The problem is that the orteds are used to route messages, and there is currently no way to remove an orted without breaking this network. I know people are investigating this possibility in support of fault

Re: [OMPI users] on-the-fly nodes liberation

In fact I am running my dynamic or malleable MPI application as a single job, which is able to increase and decrease its amount of nodes/processors at runtime. I am using the OAR resource manager to launch and provide resource availability information to the application. My question concern in

[OMPI users] Lower performance on a Gigabit node compared to infiniband node

Dear Open MPI team, With Open MPI-1.3, the fortran application CPMD is installed on Rocks-4.3 cluster - Dual Processor Quad core Xeon @ 3 GHz. (8 cores per node) Two jobs (4 processes job) are run on two nodes, separately - one node has a ib connection ( 4 GB RAM) and the other node has

Re: [OMPI users] Lower performance on a Gigabit node compared to infiniband node

Isn't this a re-posting of an email thread we already addressed? On Mar 9, 2009, at 8:30 AM, Sangamesh B wrote: Dear Open MPI team, With Open MPI-1.3, the fortran application CPMD is installed on Rocks-4.3 cluster - Dual Processor Quad core Xeon @ 3 GHz. (8 cores per node) Two jobs (4

Re: [OMPI users] Lower performance on a Gigabit node compared toinfiniband node

It depends on the characteristics of the nodes in question. You mention the CPU speeds and the RAM, but there are other factors as well: cache size, memory architecture, how many MPI processes you're running, etc. Memory access patterns, particularly across UMA machines like clovertown

[OMPI users] only see ras info doing ompi_info for sge

With version 1.3, should I see the both MCA ras and MCA pls when doing an ompi_info. After doing my build with 1.3, I only see the ras component. Bernie Borenstein Yes I know I didn't attach any info, but I'm just trying to determine if there is a problem or something has changed between

Re: [OMPI users] only see ras info doing ompi_info for sge

On 03/09/09 13:20, Borenstein, Bernard S wrote: With version 1.3, should I see the both MCA ras and MCA pls when doing an ompi_info. After doing my build with 1.3, I only see the ras component. Bernie Borenstein Yes I know I didn’t attach any info, but I’m just trying to determine if

Re: [OMPI users] only see ras info doing ompi_info for sge

a problem or something has changed between 1.2.8 and 1.3. I’m doing a configure –with-sge –enable-static –disable-shared Bernie __ Information from ESET NOD32 Antivirus, version of virus signature database 3921 (20090309) __ The message was checked by ESET NOD32 Antivi

[OMPI users] inconsistant FAQ entries - building openmpi with sge and running openmpi with sge

The building openmpi with sge faq says : For Open MPI v1.2, SGE support is built automatically; there is nothing that you need to do. Note that SGE support first appeared in v1.2. NOTE: For Open MPI v1.3, or starting with trunk revision number r16422, you will need to explicitly request the

[OMPI users] OpenMPI program getting stuck at poll()

Hi all, I have a distributed program running on 400+ nodes and using OpenMPI. I have run the same binary with nearly the same setup successfully previously. However in my last two runs the program seems to be getting stuck after a while before it completes. The stack trace at the time it gets