I'm afraid we don't position binaries for you, though we have talked
about providing that capability. I have some code in the system that -
will- do it for certain special circumstances, but not in the general
case, and much of the required infrastructure exists in the code
today. I'm not su
Not at the moment - though I imagine we could create one. It is a tad
tricky in that we allow multiple -x options on the cmd line, but we
obviously can't do that with an envar.
The most likely solution would be to specify multiple "-x" equivalents
by separating them with a comma in the enva
Thanks Dear,
Jonathan seems almost perfect; I percieve the same.
On Fri, Nov 6, 2009 at 6:17 PM, Tom Rosmond wrote:
> AMJAD
>
> On your first question, the answer is probably, if everything else is
> done correctly. The first test is to not try to do the overlapping
> communication and computa
AMJAD
On your first question, the answer is probably, if everything else is
done correctly. The first test is to not try to do the overlapping
communication and computation, but do them sequentially and make sure
the answers are correct. Have you done this test? Debugging your
original approach
Hi, Amjad:
[...]
What I do is that I start non
blocking MPI communication at the partition boundary faces (faces shared
between any two processors) , and then start computing values on the
internal/non-shared faces. When I complete this computation, I put
WAITALL to ensure MPI communication
Hi all,
I need/request some help from those who have some experience in
debugging/profiling/tuning parallel scientific codes, specially for
PDEs/CFD.
I have parallelized a Fortran CFD code to run on
Ethernet-based-Linux-Cluster. Regarding MPI communication what I do is that:
Suppose that the gri
This sounds like what I need exactly. But when I tried it, I got the
following problem - I'm working on my Desktop, and trying to preload
the executable to my laptop.
--
gordon@gordon-desktop:~/Desktop/openmpi-1.3.3/examples$
Hi all,
Sorry for the newbie question, but I'm having a hard time finding the answer,
as I'm not even familiar with the terminology...
I've setup a small cluster on Ubuntu (hardy) and everything is working great,
including slurm etc. If I run the well known 'Pi' program I get the proper
result
Hi Everyone,
I have install openmpi 1.3 and blcr 0.81 on my laptop (single
processor).
I am trying to checkpoint a small test application:
###
#include
#include
#include
#include
#include
int main(int argc, char **argv)
{
int rank,size;
MPI_Init(&argc, &argv);
MPI_Comm
Dear OpenMPI developer,
with the -x option of mpiexec there is a way to distribute environmnet
variables:
-x Export the specified environment variables to the remote
nodes before executing the program.
Is there an environment variable ( OMPI_) with the same mean
Hi,
Thank you for the information, I'm going to try the new Intel
Compilers which I'm downloading now, but as they're taking so long to
download I don't think I'm going to be able to look into this again
until after the weekend. BTW using their java-based downloader is a
bit less painful than thei
On Nov 5, 2009, at 4:46 AM, Mohamed Adel wrote:
Dear Sergio,
Thank you for your reply. I've inserted the modules into the kernel
and it all worked fine. But there is still a weired issue. I use the
command "mpirun -n 2 -am ft-enable-cr -H comp001 checkpoint-restart-
test" to start the an
On Oct 28, 2009, at 7:41 AM, Sergio Díaz wrote:
Hello,
I have achieved the checkpoint of an easy program without SGE. Now,
I'm trying to do the integration openmpi+sge but I have some
problems... When I try to do checkpoint of the mpirun PID, I got an
error similar to the error gotten wh
On Oct 30, 2009, at 1:35 PM, Hui Jin wrote:
Hi All,
I got a problem when trying to checkpoint a mpi job.
I will really appreciate if you can help me fix the problem.
the blcr package was installed successfully on the cluster.
I configure the ompenmpi with flags,
./configure --with-ft=cr --enabl
(Sorry for the excessive delay in replying)
I do not have any experience with the DMTCP project, so I can only
speculate on what might be going on here. If you are using DMTCP to
transparently checkpoint Open MPI you will need to make sure that you
are not using any other interconnect other
(Sorry for the excessive delay in replying)
On Sep 30, 2009, at 11:02 AM, Constantinos Makassikis wrote:
Thanks for the reply!
Concerning the mca options for checkpointing:
- are verbosity options (e.g.: crs_base_verbose) limited to 0 and 1
values ?
- in priority options (e.g.: crs_blcr_prio
As an alternative technique for distributing the binary, you could ask
Open MPI's runtime to do it for you (made available in the v1.3
series). You still need to make sure that the same version of Open is
installed on all nodes, but if you pass the --preload-binary option to
mpirun the runt
On Nov 6, 2009, at 5:49 AM, Lee Amy wrote:
Thanks. And actually I don't know if I need to disable iptables to run
MPI programs properly. Obviously from your words Open MPI will use
random ports so how do I set up in iptables then let trusted machines
open their random ports?
I'm afraid I'm n
On Fri, Nov 6, 2009 at 2:39 AM, Jeff Squyres wrote:
> On Nov 5, 2009, at 11:28 AM, Lee Amy wrote:
>
>> I remembered MPI does not count on TCP/IP but why default iptables
>> will prevent the MPI programs from running? After I stop iptables then
>> programs run well. I use Ethernet as connection.
>>
Hi,
I was trying to use non-blocking MPI I/O and to my surprise,
MPI_File_iwrite() is *blocking*. Please see the attached iwrite-test.c
and run it (mpiexec -n 1 or standalone). This is what I get:
MPI_File_iwrite: 10.706 s
MPI_Wait: 0.000 s
I take that to mean that MPI_File_iwrite()
On Nov 4, 2009, at 12:46 , George Markomanolis wrote:
I have some questions, because I am using some programs for
profiling, when you say that the cost of allreduce raise you mean
about the time only or also and the flops of this command? Is there
some additional work added at the allreduce
21 matches
Mail list logo
