Hello, Sorry for coming late in the thread, I've been busy at conference, traveling, teaching, moving between flats :)
Brice Goglin, le Thu 22 Sep 2011 22:25:33 +0200, a écrit : > > (2d) more specifically: since all caches are of type HWLOC_OBJ_CACHE, we > > find ourselves putting in special case logic for caches all over our code. > > Ick. > > > > Note: I'm not sure how to add new HWLOC_OBJ_CACHE_Lx types and preserve > > backwards compatibility. :-\ > > Long standing problem, yes. Not only about caches unfortunately. Also > about groups, and maybe other one day. Introducing CACHE_Lx is a way to not be generic: when an L4 gets introducted, applications will not automatically know that it's simply a newer cache level and simply use the cache size etc. automatically, so I've rather keep with CACHE objects and a depth parameter. That being said, maybe hwloc_get_obj_by_type should have a hwloc_get_obj_by_type_and_depth sibling, so we can call hwloc_get_obj_by_type_and_depth(topology, HWLOC_OBJ_CACHE, 3, 0); Samuel
