Re: [OMPI users] OpenMPI Hangs, No Error

Naturally, a forgotten attachment. An to edit that, it was compiled to be used with OpenMPI 1.4.1, but as I understand, 1.4.2 is just a bug fix of 1.4.1. --- On Tue, 7/13/10, Robert Walters wrote: From: Robert Walters Subject: Re: [OMPI users] OpenMPI

Re: [OMPI users] OpenMPI Hangs, No Error

I think I forgot to mention earlier that the application I am using is pre-compiled. It is a finite element software called LS-DYNA. It is not open source and I likely cannot obtain the code it uses for MPP. This version I am using was specifically compiled, by the parent company, for OpenMPI

Re: [OMPI users] OpenMPI Hangs, No Error

Like Ralph says, the slow down may not be coming from the kernel, but rather on waiting for messages. What MPI send/recv commands are you using? On Tue, Jul 13, 2010 at 11:53 AM, Ralph Castain wrote: > I'm afraid that having 2 cores on a single machine will always outperform

Re: [OMPI users] Dynamic processes connection and segfault on MPI_Comm_accept

As far as I can tell, it appears the problem is somewhere in our communicator setup. The people knowledgeable on that area are going to look into it later this week. I'm creating a ticket to track the problem and will copy you on it. On Jul 13, 2010, at 6:57 AM, Ralph Castain wrote: > > On

Re: [OMPI users] OpenMPI Hangs, No Error

I'm afraid that having 2 cores on a single machine will always outperform having 1 core on each machine if any communication is involved. The most likely thing that is happening is that OMPI is polling waiting for messages to arrive. You might look closer at your code to try and optimize it

Re: [OMPI users] [openib] segfault when using openib btl

Hi Eloi: To select the different bcast algorithms, you need to add an extra mca parameter that tells the library to use dynamic selection. --mca coll_tuned_use_dynamic_rules 1 One way to make sure you are typing this in correctly is to use it with ompi_info. Do the following: ompi_info -mca

Re: [OMPI users] OpenMPI Hangs, No Error

OpenMPI, Following up. The sysadmin opened ports for machine to machine communication and OpenMPI is running successfully with no errors in connectivity_c, hello_c, or ring_c. Since, I have started to implement our MPP software (finite element analysis) that we have, and upon running a simple,

Re: [OMPI users] [openib] segfault when using openib btl

Hi, I've found that "--mca coll_tuned_bcast_algorithm 1" allowed to switch to the basic linear algorithm. Anyway whatever the algorithm used, the segmentation fault remains. Does anyone could give some advice on ways to diagnose the issue I'm facing ? Regards, Eloi On Monday 12 July 2010

Re: [OMPI users] Install OpenMPI on Win 7 machine

It works perfectly! Thanks a lot guys. You've been really helpful especially you Damien Hocking and Shiqing Fan. All this complicated process makes me wonder how complicated the code behind OpenMPI and MPI in general is. In some cases, mailing lists really are a lot more useful than online forums.

Re: [OMPI users] Dynamic processes connection and segfault on MPI_Comm_accept

On Jul 13, 2010, at 3:36 AM, Grzegorz Maj wrote: > Bad news.. > I've tried the latest patch with and without the prior one, but it > hasn't changed anything. I've also tried using the old code but with > the OMPI_DPM_BASE_MAXJOBIDS constant changed to 80, but it also didn't > help. > While

Re: [OMPI users] OpenMPI load data to multiple nodes

Am 13.07.2010 um 04:50 schrieb Bowen Zhou: > Since each node has its own memory in a distributed memory system, > there is no such thing as "global variable" that can be accessed by all > processes. So you need to use MPI to scatter the input from rank 0 > process to all the other processes

Re: [OMPI users] Dynamic processes connection and segfault on MPI_Comm_accept

Bad news.. I've tried the latest patch with and without the prior one, but it hasn't changed anything. I've also tried using the old code but with the OMPI_DPM_BASE_MAXJOBIDS constant changed to 80, but it also didn't help. While looking through the sources of openmpi-1.4.2 I couldn't find any

Re: [OMPI users] hpw to log output of spawned processes

Thanks for the patch - it works fine! Jody On Mon, Jul 12, 2010 at 11:38 PM, Ralph Castain wrote: > Just so you don't have to wait for 1.4.3 to be released, here is the patch. > Ralph > > > > > On Jul 12, 2010, at 2:44 AM, jody wrote: > >> yes, i'm using 1.4.2 >> >> Thanks >>