On Tue, Mar 17, 2009 at 01:32:42PM +0200, Kornilios Kourtis wrote: > On Tue, Mar 17, 2009 at 11:45:22AM +0100, Andi Kleen wrote: > > On Tue, Mar 17, 2009 at 03:09:10AM +0200, Kornilios Kourtis wrote: > > > Hi, > > > > > > I was wondering if you would be interested in adding a libnuma function > > > for determing the node that a cpu belongs to. > > > > Concrete use case please. Why would you want to do that in a program? > > My specific case is quite simple: I have a program that creates a number > of threads that are bound to run in specific cpus. I want to pre-allocate > memory in the node of the cpu that the thread will run before the threads > are created using numa_alloc_onnode(). Normally the number of threads is dependent on the data layout, isn't it? It seems like a backwards way of doing things, but ok. BTW another known topology reporting hole is there is currently no way to report number of CPUs for a given node. Normally it's just max/cpus, but that can change with CPU hotplug. On the other hand CPU/node hotplug is currently not really supported anyways. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-numa" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
