Just to check what is going on, why don't you remove that message passing code
and just
printf("Hello MPI World from process %d!", my_rank
in each process? Much more direct - avoids any ambiguity.
Also, be certain that you compile this program for the specific OMPI version
you are running it
I'm afraid you'll have to ask the EC2 folks - you probably need something to
get through their firewall.
If you just try "ssh ec2-174-129-183-64.compute-1.amazonaws.com hostname", does
that work? I would just try to make that work first - once it does, so should
mpirun.
On Apr 17, 2010, at 4:3
Okay, but here is the problem. If you don't use mpirun, and are not operating
in an environment we support for "direct" launch (i.e., starting processes
outside of mpirun), then every one of those processes thinks it is a singleton
- yes?
What you may not realize is that each singleton immediat
Hi,
I am having a problem running application with OpenMpi version 1.4.1.
The system works with version 1.2.7, but fails with version 1.3.4 and
1.4.1. (These are the only version I have tried).
My application is linked against a shared library which does a dlopen of
a 2nd shared "C" library which
Ofcourse, its the same program, wasnt recompiled for a week.
#include
#include
#include "mpi.h"
int main(int argc, char* argv[]){
int my_rank; /* rank of process */
int p; /* number of processes */
int source; /* rank of sender */
int dest; /* rank of receiver */
int tag=
Hi all,
I'm trying to add EC2 instances into my local cluster with openMPI. So far
openMPI works well on the local cluster, and I have set up passwordless SSH
between the local cluster and the Amazon EC2 instance.
Howver, when I add the public DNS into a file (defaulthostfiletest)
comp1 slots=2
Yes, I know. The problem is that I need to use some special way for
running my processes provided by the environment in which I'm working
and unfortunately I can't use mpirun.
2010/4/18 Ralph Castain :
> Guess I don't understand why you can't use mpirun - all it does is start
> things, provide a
Guess I don't understand why you can't use mpirun - all it does is start
things, provide a means to forward io, etc. It mainly sits there quietly
without using any cpu unless required to support the job.
Sounds like it would solve your problem. Otherwise, I know of no way to get all
these proce
Hi,
I'd like to dynamically create a group of processes communicating via
MPI. Those processes need to be run without mpirun and create
intracommunicator after the startup. Any ideas how to do this
efficiently?
I came up with a solution in which the processes are connecting one by
one using MPI_Com
On Apr 17, 2010, at 11:17 AM, Mario Ogrizek wrote:
> Hahaha, ok then that WAS silly! :D
> So there is no way to utilize both cores with mpi?
We are using both cores - it is just that they are on the same node. Unless
told otherwise, the processes will use shared memory for communication.
>
>
Hahaha, ok then that WAS silly! :D
So there is no way to utilize both cores with mpi?
Ah well, I'll correct that.
>From console, im starting a job like this: mpirun -np 4 Program, where i
want to run a Program on 4 processors.
I was just stumbled when i got same output 4 times, like there are 4
p
On Apr 17, 2010, at 1:16 AM, Mario Ogrizek wrote:
> I am new to mpi, so I'm sorry for any silly questions.
>
> My idea was to try to use dual core machine as two nodes. I have a limited
> access to a cluster, so this was just for "testing" purposes.
> My default hostfile contains usual comments
Hi all
I'm around this code, I've gone from serial to parallel with MPI, from
F77 to F95+2003... and now I'm adding OpenMP to easy the communication
side of things.
One of the constructs I'm looking is:
$!OMP SECTIONS < this creates a SECTIONS area.
$!OMP SECTION < this is a
Ricardo:
Thank you for your reply. The variable ABSOFT is currently defined in the
.bashrc file. One can check this by doing "echo $ABSOFT" that returns the
location "/Applications/Absoft11.0". However, the makefile (or one of its
depend files) does not know the $ABSOFT value.
Paul
On Apr
On Fri, 16 Apr 2010, Paul Cizmas wrote:
I tried to add in the makefile the following line
ABSOFT = /Applications/Absoft11.0
but this did not help. I wonder if this definition of ABSOFT must be added
to another file. If so, what this file should be?
generally ABSOFT should be an environmen
I am new to mpi, so I'm sorry for any silly questions.
My idea was to try to use dual core machine as two nodes. I have a limited
access to a cluster, so this was just for "testing" purposes.
My default hostfile contains usual comments and this two nodes:
node0
node1
I thought that each processo
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