Hi all!
I am trying to build a cluster for MPI jobs using OpenVZ containers
(https://openvz.org/Main_Page).
I've been successfully using openvz+openmpi during many years but can't make it work with OpenMPI
1.10.x.
So I have a server with openvz support enabled. The output of it's ifconfig:
[r
Nikolay --
Thanks for all the detail! That helps a tremendous amount.
Open MPI actually uses IP networks in *two* ways:
1. for command and control
2. for MPI communications
Your use of btl_tcp_if_include regulates #2, but not #1 -- you need to add
another MCA param to regulate #1. Try this:
Jeff Squyres (jsquyres) wrote on 24/06/16 13:43:
Nikolay --
Thanks for all the detail! That helps a tremendous amount.
Open MPI actually uses IP networks in *two* ways:
1. for command and control
2. for MPI communications
Your use of btl_tcp_if_include regulates #2, but not #1 -- you need to
On Jun 24, 2016, at 7:26 AM, kna...@gmail.com wrote:
>
>> mpirun --mca btl_tcp_if_include venet0:0 --mca oob_tcp_if_include
>> venet0:0 ...
> > See if that works.
> Jeff, thanks a lot for such prompt reply, detailed explanation and
> suggestion! But unfortunately the error is still the same:
Jeff, It works now! Thank you so much!
[user@ct110 hello]$ /opt/openmpi/1.10.3-1/bin/mpirun --mca btl self,tcp --mca btl_tcp_if_include
venet0:0 --mca oob_tcp_if_include venet0:0 -npernode 1 -np 2 --hostfile mpi_hosts.txt hostname
ct110
ct111
[user@ct110 hello]$ /opt/openmpi/1.10.3-1/bin/mpiru
Ok, great.
I've opened up https://github.com/open-mpi/ompi/pull/1814 to track the issue.
This hack around certainly isn't going to ship in an Open MPI production
tarball; we should probably do something more formal / correct.
> On Jun 24, 2016, at 10:31 AM, kna...@gmail.com wrote:
>
> Jeff,
Ralph and Jeff:
Thanks for your replies to my questions about compiling a 32-bit MPI library
for Forth.
Ralph wrote:
IIRC, you would need to write a wrapper to let Forth access C-based functions, yes? You could
configure and build OMPI as a 32-bit library, and libmpi.so is C, so that isn?t an
On Jun 24, 2016, at 4:39 PM, Richard C. Wagner wrote:
>
> Then I try to compile the library file in 32-bit mode. The first command is:
>
> mpicc -fPIC -m32 -c libtest.c
>
> Then the second is:
>
> mpicc -shared -m32 -o libmpi.so libtest.o
>
> As you can see below, compiling the object file w
Also, I recommend you do not name your library libmpi.so, since this name
is already used by Open MPI
Cheers,
Gilles
On Saturday, June 25, 2016, Jeff Squyres (jsquyres)
wrote:
> On Jun 24, 2016, at 4:39 PM, Richard C. Wagner > wrote:
> >
> > Then I try to compile the library file in 32-bit mo
