From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2007-06-21 16:43:12
Hrmm. Perhaps https://svn.open-mpi.org/trac/mtt/ticket/189 is your
best hope for something better...?
On Jun 21, 2007, at 11:29 AM, Ethan Mallove wrote:
> Hi,
>
> I have a way to toggle single-node testing at the command
> line. E.g., it looks like this:
>
> $ client/mtt run_on_single_node=1 ...
> $ client/mtt run_on_single_node=0 ...
>
> I just needed the below INI mojo to get this going.
>
> Added a "run_on_single_node" boolean to my [MTT] section.
> ("ompinfo" is an internal Sun script that spits out
> hard-coded hostlist's based on what node the user is on.)
>
> {{{
> [MTT]
> ...
> # Boolean which tells MTT to run on a single node
> run_on_single_node = 0
>
> ompinfo = /ws/ompi-tools/bin/ompinfo
> hostlist = <<EOT
> &perl("
> if ($run_on_single_node) {
> return `$ompinfo -j' ' | cut -f1 -d' '`;
> } else {
> return `$ompinfo -j' '`;
> }
> ")
> EOT
> }}}
>
> And then I have this in my [MPI Details] section:
>
> {{{
> [MPI Details: Open MPI]
> ...
> # Figure out which btl's to use
> btls = <<EOT
> &perl("
>
> # Return cached btls var, if we have it
> if (defined(\@btls)) {
> return \\\@btls;
> }
>
> # What hosts is MTT currently running on?
> my \@hosts = split /\s+|,/, hostlist_hosts();
>
> # If there is only one host, use SM
> if (scalar(\@hosts) < 2) {
> push(\@btls, 'self,sm');
>
> # Otherwise, use uDAPL or TCP
> } else {
> if ($ib_is_up) {
> push(\@btls, 'self,udapl');
> } else {
> push(\@btls, 'self,tcp');
> }
> }
> return \\\@btls;
> ")
> EOT
> }}}
>
> Is there an easier way to do this?
>
> -Ethan
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-- Jeff Squyres Cisco Systems