some questions:
1) I don't understand the means of HWLOC_MEMBIND_BIND policy. Why I should to allocate in a node "near" my cpuset and not in my local node ( where thread or process runs?)
2) My goal is to replicate the behaviour of set_area_membind_nodeset() in some manner for all futures allocation without call this function each time I allocate some memory. Is it possible to do this?
2011/9/22 Brice Goglin
<Brice.Goglin@inria.fr>
Le 22/09/2011 12:20, Gabriele Fatigati a écrit :
> NUMA node(s) near the specified cpuset.
>
> What does "nodes near the specified cpuset" means? The node wherethe
> specified cpuset lives?
> Set the default memory binding policy of the current process or thread
> to prefer the
The node near the CPU specified in the cpuset.
> The first thread allocates with a malloc an array. The second thread
> (bound on other node) initialize the array.
>
> The free memory on the nodes decrease only on the node where the
> second thread is. Is it rigth?
Yes.
>
> hwloc_set_membind involves all future allocations?
>
Yes. And already allocated pages if you add the migrate flag.
Brice
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