Boris,
Open MPI should automatically detect the infiniband hardware, and use
openib (and *not* tcp) for inter node communications
and a shared memory optimized btl (e.g. sm or vader) for intra node
communications.
note if you "-mca btl openib,self", you tell Open MPI to use the openib
Em 13-07-2017 22:32, Gilles Gouaillardet escreveu:
Fabricio,
the fortran runtime might (or not) use buffering for I/O.
as a consequence, data might be written immediatly to disk, or at a later time
(e.g. the file is closed, the buffer is full or the buffer is flushed)
you might want to
Fabricio,
the fortran runtime might (or not) use buffering for I/O.
as a consequence, data might be written immediatly to disk, or at a later time
(e.g. the file is closed, the buffer is full or the buffer is flushed)
you might want to manually flush the file, or there might be an option
not to
Hello there
I'm facing a weird issue in a centos 7.3 x86 machine when remotely
running a program [https://www.myroms.org] from host1 to host2 and host3.
When the program was compiled with intel ifort 17.0, output redirection
happens immediately and the file is constantly updated.
If the
Have you tried:
-mca btl vader,openib,self
or
-mca btl sm,openib,self
by chance?
That adds a btl for intra-node communication (vader or sm).
On 07/13/2017 05:43 PM, Boris M. Vulovic wrote:
I would like to know how to invoke InfiniBand hardware on CentOS 6x
cluster with OpenMPI (static
I would like to know how to invoke InfiniBand hardware on CentOS 6x cluster
with OpenMPI (static libs.) for running my C++ code. This is how I compile
and run:
/usr/local/open-mpi/1.10.7/bin/mpic++ -L/usr/local/open-mpi/1.10.7/lib
-Bstatic main.cpp -o DoWork
usr/local/open-mpi/1.10.7/bin/mpiexec
Bummer - thanks for the info Brian.
As an FYI, I do have a real world use case for this faster connectivity
(i.e. beyond just a benchmark). While my application will happily gobble
up and run on however many machines it's given, there's a resource manager
that lives on top of everything that
