hwloc_distribute should handle asymetric topologies

[ompiteam]

hwloc_distribute currently assumes that all children of an object have
the same weight. There should be at least variants which take into
account the cpuset/gpuset etc.

It should also likely ignore children with empty CPU sets (happens with CPU-less NUMA nodes).

[ompiteam]

Imported from trac issue 13. Created by sthibaul on 2009-09-29T08:38:48, last modified: 2012-12-22T02:50:51

[ompiteam]

Trac comment by bgoglin on 2010-07-05 13:29:12:

(In [2289]) Add --ignore to hwloc-distrib.

It may be better if we add --among so as to start
at type objects directly but it requires more work.

Refs #13

Suggested by Jirka Hladky

[ompiteam]

Trac comment by bgoglin on 2010-07-05 13:29:31:

(In [2290]) Add --among to hwloc-distrib to distribute starting
from a lower level than the top object.

Refs #13

Suggested by Jirka Hladky

[ompiteam]

Trac comment by bgoglin on 2010-07-15 05:41:48:

(In [2323]) Store PCIVendor and PCIDevice in obj infos

This commit fixes #13.
(everything is in trunk, except the PCI stuff
which is still in the non-yet merged PCI branch)

[ompiteam]

Trac comment by bgoglin on 2010-09-16 09:59:23:

Was closed by mistake, reopen.

[ompiteam]

Trac comment by bgoglin on 2010-09-19 10:50:36:

Changing this back from 1.1 to future. 1.1 will already have interesting things like --among and --ignore which let you ignore intermediate asymmetric levels. Other features cited above such as GPU support won't make it for 1.1 anyway, so we'll see later.

[ompiteam]

Trac comment by sthibaul on 2010-11-16 18:29:48:

(In [2792]) - Add "until" parameter to hwloc_distribute.

• Introduce hwloc_distributev, equivalent to hwloc_distribute but takes an array of objects instead of just one root.
• Make hwloc-distrib use hwloc_distributev instead of inlining its top level.
• Rename hwloc-distrib's --among option into --from. Add --to and --at options.
• Document all this. Also document that unbalanced topologies are not properly balanced yet. Refs support user-defined processor restriction #13

[ompiteam]

Trac comment by sthibaul on 2010-11-22 08:08:38:

This is done by r2807 and r2809.