openmpi

Ralph Castain a3060cdd15 Fix the bind_downward code - it was incorrectly looking across the entire node instead of only looking below the locale to which the proc had been assigned. In other words, if the proc was mapped to a core, then the only hwthreads that should be considered for binding are those directly below that core. The binding algo was incorrectly looking at ALL hwthreads in that scenario, causing the proc to be bound to an HT outside of the mapped location.

This now results in the procs being bound within their assigned location. It also causes us to use only the 0th HT on a core unless --use-hwthread-cpus has been specified (in which case, we use all the HTs in a core). Bind to core binds you to all HTs regardless - the --use-hwthread-cpus only impacts the oversubscribed determination and when binding to HT.

cmr:v1.7

This commit was SVN r27342.

2012-09-14 22:01:19 +00:00

base

Fix the bind_downward code - it was incorrectly looking across the entire node instead of only looking below the locale to which the proc had been assigned. In other words, if the proc was mapped to a core, then the only hwthreads that should be considered for binding are those directly below that core. The binding algo was incorrectly looking at ALL hwthreads in that scenario, causing the proc to be bound to an HT outside of the mapped location.

2012-09-14 22:01:19 +00:00

external

Ensure to include external.h in the tarball.

2012-06-15 16:29:21 +00:00

hwloc142

Fix typo in comment.

2012-07-26 18:09:33 +00:00

configure.m4

Clarify a configure warning: we're ''not'' adding to DYLD_LIBRARY_PATH.

2012-07-26 21:47:00 +00:00

hwloc.h

2012-09-14 22:01:19 +00:00

Makefile.am

Per the RFC from Jeff, move hwloc from opal/mca/common to its own static framework ala libevent. Have ORTE daemons collect the topology info at startup and, if --enable-hwloc-xml is set, send that info back to the HNP for later use. The HNP only retains unique topology "templates" to reduce memory footprint. Have the daemon include the local topology info in the nidmap buffer sent to each app so the apps don't all hammer the local system to discover it for themselves.

2011-09-11 19:02:24 +00:00

README.txt

Add some notes about maintaining the hwloc framework.

2011-09-12 19:40:18 +00:00

README.txt

12 Sep 2011

Notes for hwloc component maintainers:

1. There can only be *1* hwloc version component at a time.
   Specifically: if there are multiple hwlocXYZ components (i.e.,
   different versions of hwloc), then they must all be .ompi_ignore'd
   except for 1.  This is because we currently m4_include all of the
   underlying hwloc's .m4 files -- if there are multiple hwlocXYZ
   components, I don't know if m4 will barf at the multiple,
   conflicting AC_DEFUNs, or whether it'll just do something
   completely undefined.

1a. As a consequence, if you're adding a new hwloc version component,
   you'll need to .ompi_ignore all others while you're testing the new
   one. 

2. If someone wants to fix #1 someday, we might be able to do what we
   do for libevent: OMPI_CONFIG_SUBDIR (instead of slurping in hwloc's
   .m4 files).