Hi,
If I use "orterun -H " and does not belong in the default
hostfile ("etc/openmpi-default-hostfile"), openmpi gives an error. Is there an
easy way to get the aforementioned command to work without specifying a
different hostfile with in it? Thank you.
Hi,
I am building libraries against OpenMPI, and then applications using those
libraries.
It was unclear from the FAQ at
http://www.open-mpi.org/faq/?category=debugging#memchecker_how whether the
libraries need to be recompiled and the application relinked using
valgrind-enabled mpicc etc,
Hi,
On Redhat Enterprise Linux 7, I am facing the following problems.
1. With OpenMPI 1.8.8, everything builds, but the following error appears on
running:
orterun -np 2 hello_cxx
hello_cxx: route/tc.c:973: rtnl_tc_register: Assertion `0' failed.
hello_cxx: route/tc.c:973: rtnl_tc_register: Asse
> From: Jeff Squyres (jsquyres) (jsquyres_at_[hidden])
> Date: 2015-11-06 18:02:42
>
> Both of these seem to be issues with libnl, which is a dependent library
> that Open MPI uses.
Based on your email, I found this message and thread:
https://www.open-mpi.org/community/lists/devel/2015/08/17812.p
Hi,
Is there any way with OpenMPI to propagate the current shell's environment to
the parallel program? I am looking for an equivalent way to how MPICH handles
environment variables
(https://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_How_do_I_pass_environment_variables_to_the_
I meant different from the current shell, not different for different
processes, sorry.
Also I am aware of -x but it's not the right solution in this case because (a)
it's manual (b) it appears that anything set in bashrc that was unset in the
shell would be set for the program which I do not wa
I'd appreciate a response, even a simple no if this is not possible. Thank you.
saurabh
> From: saur...@hotmail.com
> To: us...@open-mpi.org
> Subject: RE: Propagate current shell's environment
> Date: Mon, 9 Nov 2015 11:45:07 -0500
>
> I meant different from the current shell, not different for
Here's what I find:
> cd examples
> make hello_cxx
> ulimit -f 131073
> orterun -np 3 hello_cxxHello, world!
[Etc]
> ulimit -f 131072
> orterun -np 3 hello_cxx
Hi,
Sorry my previous email was garbled, sending it again.
> cd examples
> make hello_cxx
> ulimit -f 131073
> orterun -np 3 hello_cxx
Hello, world
(etc)
> ulimit -f 131072
> orterun -np 3 hello_cxx
--
orterun noticed that
An "strace" showed something related to shared memory use was causing the
signal. Sticking
btl = ^sm
into the openmpi-mca-params.conf file fixed this issue.
saurabh
From: saur...@hotmail.com
To: us...@open-mpi.org
Subject: Openmpi 1.10.1 fails with SIGXFSZ on file limit <= 131072
List-Post: us
> Could you please provide a little more info regarding the environment you
> are running under (which resource mgr or not, etc), how many nodes you had
> in the allocation, etc?
> There is no reason why something should behave that way. So it would help
> if we could understand the setup.
I apologize, I have the wrong lines from strace for the initial file there (of
course). The file with fd = 11 which causes the problem is called
shared_mem_pool.[host] and fruncate(11, 134217736) is called on it. (This is
exactly 1024 times the ulimit of 131072 which makes sense as the ulimit is
> For what it's worth, that's open MPI creating a chunk of shared memory
for use with on-server
> communication. It shows up as a "file", but it's
really shared memory.
> You can disable sm and/or Vader, but your on-server message passing
> performance will be significantly
> lower.
> Is
Hi,
Switching to OpenMPI 3, I was getting error messages of the form
"No objects of the specified type were found on at least one node:
Type: NUMANode
...
ORTE has lost communication with a remote daemon.
..."
After some research, I found that hwloc_base_binding_policy (for np > 2)
switched to
This is with valgrind 3.0.1 on a Centos 6 system. It appears pmix_finalize isnt
called and this reports leaks from valgrind despite the provided suppression
file being used. A cursory check reveals MPI_Finalize calls pmix_rte_finalize
which decrements pmix_initialized to 0 before calling pmix_cl
by machine
order in hostfile? Thanks.
From: Saurabh T
Sent: Monday, November 6, 2023 10:44 AM
To: Openmpi
Subject: Avoiding localhost as rank 0 with openmpi-default-hostfile
My openmpi-default-hostfile has
host1 slots=4
host2 slots=4
host0 slots=4
and my openmpi
My openmpi-default-hostfile has
host1 slots=4
host2 slots=4
host0 slots=4
and my openmpi-mca-params.conf has
rmaps_base_mapping_policy = node
rmaps_base_oversubscribe = 1
If I invoke orterun -np 3 on host0, it puts rank0 on host0, rank1 on host1,
rank2 on host2. I want it to put rank0 on host1,
17 matches
Mail list logo
