Hi Ankush,
You can get some example MPI programs from http://www.pdc.kth.se/training/Tutor/MPI/Templates/index-frame.html
.
You can compare the performance of these in a MPI (single processor,
multiple processors) setting and non-MPI (serial) setting to show how
it can help their research.
nodes before starting the job.
Are you seeing cases where this is not happening?
More below.
On Jan 5, 2008, at 3:48 AM, Prakash Velayutham wrote:
Hi,
I am trying to start a simple MPI code below using Open MPI 1.2.4 and
Torque 2.2.1.
prakash@bmi-opt2-04:~/thesis/CS/Samples/changejob>
Hi,
I am trying to start a simple MPI code below using Open MPI 1.2.4 and
Torque 2.2.1.
prakash@bmi-opt2-04:~/thesis/CS/Samples/changejob> cat pbs.c
#include
#include "mpi.h"
int gdb_var;
void main(argc, argv)
int argc;
char **argv;
{
int rank, size, ret;
gdb_var = 0;
char *job
slave.c:43
(gdb)
Prakash
On Dec 6, 2007, at 12:08 AM, Prakash Velayutham wrote:
Hi Edgar,
I changed the spawned program from /bin/hostname to a very simple MPI
program as below. But now, the slave hangs right at MPI_Init line.
What could the issue be?
slave.c
#include
#include
#include
mm_size(MPI_COMM_WORLD, &num_proc);
MPI_Comm_get_parent(&inter_comm);
MPI_Finalize();
exit(0);
}
Thanks,
Prakash
On Dec 2, 2007, at 8:36 PM, Edgar Gabriel wrote:
MPI_Comm_spawn is tested nightly by the test our suites, so it should
definitely work...
Thanks
Edgar
Pra
it spawns. Thus, you can not spawn a non-MPI job such as
/bin/hostname, since the parent process waits for some messages from
the
child process(es) in order to set up the intercommunicator.
Thanks
Edgar
Prakash Velayutham wrote:
Hello,
Open MPI 1.2.4
I am trying to run a simple
Hello,
Open MPI 1.2.4
I am trying to run a simple C program.
##
#include
#include
#include
#include "mpi.h"
void
main(int argc, char **argv)
{
int tag = 0;
int my_ra
eck if /bin/hostname works with the spawn.
Thanks
Ralph
Thanks,
Prakash
On 6/5/07 4:16 AM, "Prakash Velayutham"
wrote:
Hi,
Sorry about that. Two lines got cut out from the program. Here is the
full program and error messages again. No Resource Manager involved,
just ssh/rsh.
Host
your code:
MASTER : spawning 3 slaves ...
and it certainly isn't anything we generate. Also, your output implies
you
are in some kind of loop, yet your code contains only a single
comm_spawn.
Could you please clarify?
Thanks
Ralph
On 6/3/07 5:50 AM, "Prakash Velayutham"
wrot
ere in your code:
MASTER : spawning 3 slaves ...
and it certainly isn't anything we generate. Also, your output implies
you
are in some kind of loop, yet your code contains only a single
comm_spawn.
Could you please clarify?
Thanks
Ralph
On 6/3/07 5:50 AM, "Prakash Velayutham"
Hello,
Version - Open MPI 1.2.1.
I have a simple program as below:
#include
#include
#include
#include"mpi.h"
void
main(int argc, char **argv)
{
int tag = 0;
int my_rank;
int num_proc;
charmessage_0[] = "hello slav
ferent solution to dynamically adding
nodes under Torque (or any other resource manager).
Ralph
On 4/2/07 10:53 AM, "Prakash Velayutham"
wrote:
> Hello,
>
> Thanks for the patch. I still do not know the internals of Open MPI, so can't
> test this right away. But h
tch I've quickly done for my own use, which changes
the round-robin rmaps such that is first allocates the hosts to the
rmgr, as a copy&paste of some code in the dash_host ras component. It's
far from being bugfree, but it can be a startpoint to hack.
Jeremy
> Ralph
>
>
&g
e name of the node if it isn't in
your
allocation??
Ralph
On 4/2/07 10:05 AM, "Prakash Velayutham"
wrote:
> Hello,
>
> I have built Open MPI (1.2) with run-time environment enabled for
Torque
> (2.1.6) resource manager. Initially I am requesting 4 nodes (1 CPU
each)
Hello,
I have built Open MPI (1.2) with run-time environment enabled for Torque
(2.1.6) resource manager. Initially I am requesting 4 nodes (1 CPU each)
from Torque. The from inside of my MPI code I am trying to spawn more
processes to nodes outside of Torque-assigned nodes using
MPI_Comm_spawn, b
Hello,
I have Torque as the batch manager and Open MPI (1.0.1) as the MPI
library. Initially I request for 'n' processors through Torque. After
the Open MPI jobs starts, based on certain conditions, I want to acquire
more processors outside of the initially assigned nodes by Torque. Is
this a prob
e able to access the mysql database
> simultaneously from the server.
>
> Regards,
> Abhishek
>
> On 9/29/06, Prakash Velayutham wrote:
>>
>> Use Perl's Parallel::MPI (or Parallel::MPI::Simple) module. Get it from
>> CPAN. Documentation should be good enough
Use Perl's Parallel::MPI (or Parallel::MPI::Simple) module. Get it from
CPAN. Documentation should be good enough to start with.
Prakash
Abhishek Pratap wrote:
> Can i execute a code written in perl over with MPI.
>
> My code also access a database present locally on the server.
>
> I am new to
ure of the support for MPI-2 standard with
> >either of these modules. Is there someone here that can answer that
> >question too? Also those modules seem to work only with MPICH now and
> >not the other MPI distributions.
>
> Prakash Velayutham wrote: Renato Golin wrote:
Renato Golin wrote:
> On 9/13/06, imran shaik wrote:
>
>> I need to run parallel jobs on a cluster typically of size 600 nodes and
>> running SGE, but the programmers are good at perl but not C or C++. So i
>> thought of MPI, but i dont know whether it has perl support?
>>
>
> Hi Imran,
>
point (mpirun) during startup. Do you have any firewalls or
port blocking running in your cluster?
-Original Message-
From: users-boun...@open-mpi.org
[mailto:users-boun...@open-mpi.org] On Behalf Of Prakash Velayutham
Sent: Friday, April 14, 2006 11:00 AM
To: us...@open-mpi.org
Cc: Pr
Hi All,
What does this error mean?
**
socket 10: [wins02:19102] [0,0,3]-[0,0,0] mca_oob_tcp_msg_recv: readv
failed with errno=104
socket 12: [wins01:19281] [0,0,4]-[0,0,0] mca_oob_tcp_msg_recv: readv
failed with errno=104
r 11
ret is 17002 instead of 0: tm_init failed
3 processes killed (possibly by Open MPI)
I am using Torque-2.0.0p7 and Open MPI-1.0.1.
Prakash: are you running an unmodified version of Torque 2.0.0p7?
I will test an unmodified version of 2.0.0p8 right now and let you know,
but I am positive that is no
n MPI)
I am using Torque-2.0.0p7 and Open MPI-1.0.1.
Prakash: are you running an unmodified version of Torque 2.0.0p7?
I will test an unmodified version of 2.0.0p8 right now and let you know,
but I am positive that is not the issue.
TIA,
Prakash
> -Original Message-
> From: u
Pak Lui wrote:
Prakash,
tm_poll: protocol number dis error 11
ret is 17002 instead of 0: tm_init failed
3 processes killed (possibly by Open MPI)
I encountered similar problem with OpenPBS before, which also uses the
TM interfaces. It returns a TM_ENOTCONNECTED (17002) when I tried to
call tm
Hi Jeff,
I have a minimal MPI program to test the TM interface and strangely I seem to
get errors during tm_init call. Could you explain what could be wrong? Have you
seen anything similar. Here is the MPI code:
#include
#include
#include
extern char **environ;
void do_check(int val, char
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