Tahir,
There are a variety of ways to create shared memory segments. I am not a
Fortran expert, but do believe this is something that needs to be done from
c/c++.
In Open MPI we use the mmap set of routines to create the shared memory
segments
we use.
Rich
On 5/28/07 10:21 PM, "Tahir Malas
> There is nothing preventing you from creating your own shared memory
> segment
> for use by your application. This does not impact the MPI implementation.
> You need to make sure you take care of all the issues associated with
> multiple procs/threads accessing the same cache lines, which can c
There is nothing preventing you from creating your own shared memory segment
for use by your application. This does not impact the MPI implementation.
You need to make sure you take care of all the issues associated with
multiple procs/threads accessing the same cache lines, which can cause quite
On May 22, 2007, at 7:52 PM, Tom Clune wrote:
For example, if it is ppp0, try:
mpirun -np 1 -mca oob_tcp_exclude ppp0 uptime
This seems to at least produce a bit of output before hanging:
LM000953070:~ tlclune$ mpirun -np 1 -mca oob_tcp_exclude ppp0 uptime
[153.sub-70-211-6.myvzw.com:0756
Hi all,
We have an 8-node cluster of SMP nodes, which have dual-quad core
processors. The network is Infiniband. Each process in our parallel FORTRAN
90 program holds an identical array that is used in all parts of the
program. However, when the size of the problem gets larger and larger, this
memo
