openmpi

Ralph Castain 8b6d117541 Per the OMPI devel conference that changed our default behaviors: * default to bind-to core * map-by slot if np=2 * map-by socket (balance across sockets on each node) if np > 2 * map-by <obj> will imply rank-by <obj> by default (leave default binding as above) Fix a bug in the map-by <obj> mapper where we incorrectly compute the #procs to assign if the #slots > #procs cmr=v1.7.4:reviewer=jsquyres:subject=Update default binding and mapping values This commit was SVN r29919.		2013-12-15 17:25:54 +00:00
..
base	Per the OMPI devel conference that changed our default behaviors:	2013-12-15 17:25:54 +00:00
external	Revamp the handling of wrapper compiler flags. The user flags, main configure	2013-01-29 00:00:43 +00:00
hwloc172	Clean up variables used in configure with OPAL_VAR_SCOPE.	2013-12-06 23:40:34 +00:00
configure.m4	Don't mandate PCI support, because this will make builds on platforms	2013-03-19 16:20:08 +00:00
hwloc.h	We previously weren't checking all the bits in locality to ensure we had a complete match - instead, we would report "local" to the specified level if only one bit matched. Ensure that a est for locality tests local to the specified level by checking that all bits match.	2013-11-08 04:21:05 +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).