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On 02/09/11 19:54, Jeff Squyres wrote:
> Fail enough,
Nice Freudian slip. :-)
> but do the back-end nodes have libxml?
rpm --root /bgsys/drivers/ppcfloor/linux/OS -qa | grep -i xml
That's the I/O node filesystem, which is what the compute node
kernel maps I/O's back to I believe. Mind you most people on
BG do statically linking as dynamic linking is rather new there.
> For us to do what we want, it would need to be available on
> all nodes because the OMPI orted processes would be querying
> hwloc for the local topology and then sending it to the "head"
> node process (usually mpirun) for further analysis and process
Umm, not sure that'll work on a BG because you can't fork() or
execve() on a BG, the IBM mpirun runs on the login node and talks
to an mpirund on the service node which then launches the users
code on the compute nodes via the Navigator API.
Christopher Samuel - Senior Systems Administrator
VLSCI - Victorian Life Sciences Computation Initiative
Email: samuel_at_[hidden] Phone: +61 (0)3 903 55545
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