Hi Again,
Ralph Castain wrote:
Hmmmm....okay, I can see that. Are you looking for an mca param that
specifies a file that might contain config info we should read when
starting up the orted?
an mca param sound appropriate.
Here, so far I can understand, orted is not involved: on my SLURM cluster, I
added as
regular user in my local `~/.openmpi/mca-params.conf' file the line
`plm_slurm_args = --chdir=/local/<USERNAME>', where the /local _s are
local directories. This is for orted part.
For the wdir of the spawned programs, unless specified through MPI_Info,
the last assumed default is $HOME: this is the default that should be
configurable.
By the way, it would be nice to be able to use some tokens of the form %T (see
sshd_config)
in the mca-params.conf . For my previous example, with sshd_config convention:
plm_slurm_args = --chdir=/local/%u
in the system wide configuration file `/etc/openmpi/openmpi-mca-params.conf' ,
or something as
plm_slurm_args = --chdir=$LOCALDIR
hth,
Jerome
What would this local configuration file look
like (e.g., what kind of config directives would you need/want), would
you provide it on the node where mpirun is or would it be on every
remote node, etc?
All things are doable - the devil is in defining the details. :-)
On Apr 16, 2009, at 8:23 AM, Jerome BENOIT wrote:
Hi !
thanks for the reply.
On a homeless workers cluster when the workers programs are spawned
via MPI_Comm_spaw{,multiple},
it would be nice to set up a default alternative assumed current which
is local (rather than global
as $HOME) via a local configuration file: you can play with the wdir
in MPI_Info only
if the cluster is homogeneous enough.
hth,
Jerome
Ralph Castain wrote:
Not currently - could be done if there is a strong enough reason to
do so. Generally, though, the -wdir option seems to do the same
thing. Is there a problem with it, or some need it doesn't satisfy?
On Apr 15, 2009, at 11:00 PM, Jerome BENOIT wrote:
Hello List,
in FAQ Running MPI jobs, point 12, we read:
-wdir <directory>: Set the working directory of the started
applications.
If not supplied, the current working directory is assumed
(or $HOME, if the current working directory does not exist on all
nodes).
Is there a way to configure the default alternative assumed current
directory (here $HOME) ?
Thanks in advance,
Jerome
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