Hi George,
Allocating memory is one thing. Being able to use it it's a
completely different story. Once you allocate the 8GB array can you
fill it with some random values ? This will force the kernel to
really give you the 8GB of memory. If this segfault, then that's the
problem. If not ... the
Allocating memory is one thing. Being able to use it it's a
completely different story. Once you allocate the 8GB array can you
fill it with some random values ? This will force the kernel to
really give you the 8GB of memory. If this segfault, then that's the
problem. If not ... the proble
Jelena, George,
Thanks for your replies.
it is possible that the problem is not in MPI - I've seen similar
problem
on some of our workstations some time ago.
Juan, are you sure you can allocate more than 2x 4GB memory of data in
non-mpi program on your system?
Yes, I did a small program that
Juan,
it is possible that the problem is not in MPI - I've seen similar problem
on some of our workstations some time ago.
Juan, are you sure you can allocate more than 2x 4GB memory of data in
non-mpi program on your system?
Thanks,
Jelena
On Wed, 1 Aug 2007, George Bosilca wrote:
Juan,
Juan,
I have to check to see what's wrong there. We build Open MPI with
full support for data transfer up to sizeof(size_t) bytes. so you
case should be covered. However, there are some known problems with
the MPI interface for data larger than sizeof(int). As an example the
_count field
Hi,
Does anyone know the maximum buffer size I can use in MPI_Send()
(MPI_Recv) function?. I was doing some testing using two nodes on my
cluster to measure the point-to-point MPI message rate depending on
size. The test program exchanges MPI_FLOAT datatypes between two
nodes. I was able
