Eugene Loh wrote:
Yves Caniou wrote:
Le Wednesday 28 July 2010 15:05:28, vous avez écrit :
I am confused. I thought all you wanted to do is report out the binding of
the process - yes? Are you trying to set the affinity bindings yourself?
If the latter, then your
David Akin wrote:
All,
I'm trying to get the OpenMP portion of the code below to run
multicore on a couple of 8 core nodes.
I was gone last week and am trying to catch up on e-mail. This thread
was a little intriguing.
I agree with Ralph and Terry:
*) OMPI should not be binding by defaul
Allen Barnett wrote:
Thanks for the pointer!
Do you know if these sizes are dependent on the hardware?
They can be, the following file sets up the defaults for some known cards:
ompi/mca/btl/openib/mca-btl-openib-device-params.ini
--td
Thanks,
Allen
On Tue, 2010-08-03 at 10:29 -0400, Ter
Tad Lake wrote:
I run it :
mpirun -np 2 --host node2 ./a.out
But the result of time is not stable with difference of 100 times. For example,
the max value of time can be 3000, meanwhile the min is 100.
Again, know what results to expect. Is 3000 a reasonable time and 100
too fast? Or, is
Thanks for the pointer!
Do you know if these sizes are dependent on the hardware?
Thanks,
Allen
On Tue, 2010-08-03 at 10:29 -0400, Terry Dontje wrote:
> Sorry, I didn't see your prior question glad you found the
> btl_openib_receive_queues parameter. There is not a faq entry for
> this but I fo
Mark Potts wrote:
Hi,
I'd opt for the fact that tv0 is given value only on rank 0 and
tv1 is
only given value on rank 1. Kind of hard to get a diff betwn the two
on either rank with that setup. You need to determine the tv0 and
tv1
on both ranks.
I don't understand this.
If your class has too many complex atributes,
it might be a good idea to send some sort of string or similar data
representing your class,
and then on the receiving node, you create the object based on that
information.
works on some type of problems problems.
best regards.
Cristobal
On Wed, Aug
Hi,
I'd opt for the fact that tv0 is given value only on rank 0 and tv1 is
only given value on rank 1. Kind of hard to get a diff betwn the two
on either rank with that setup. You need to determine the tv0 and tv1
on both ranks.
In addition, there are a number of other errors in t
Did you bind the processes? If not you may be seeing the impact of having
processes bouncing between cpus, and/or processes not being local to their
memory. Try adding -bind-to-core or -bind-to-socket to your cmd line and see if
things smooth out. I'm assuming, of course, that you are running on
Hi,
I have a little program for execution time.
=
#include "mpi.h"
#include
#include
#include
#include
int main (int argc, char *argv[]) {
MPI_Status Stat;
struct timeval tv0, tv1;
long int totaltime = 0;
int i, j;
int buf[10240];
Hi Jack,
On Wed, Aug 4, 2010 at 6:25 AM, Jack Bryan wrote:
> I need to transfer some data, which is C++ class with some vector
> member data.
> I want to use MPI_Bcast(buffer, count, datatype, root, comm);
> May I use MPI_Datatype to define customized data structure that contain C++
> class ?
No
Dear All:
I need to transfer some data, which is C++ class with some vector member
data.
I want to use MPI_Bcast(buffer, count, datatype, root, comm);
May I use MPI_Datatype to define customized data structure that contain C++
class ?
Any help is appreciated.
Jack
Aug 3 2010
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