Le 12/09/2011 12:52, Gabriele Fatigati a écrit : > Dear hwloc users, > > I'm binding process in a NUMA node and also associated OpenMP threads. > I've noted that, if I bind execution of all on different cores in > the same NUMA node , it works well. > > If I bind process in NUMA node 0 for example, and thread on NUMA node > 1, the process is bound on NUMA node 1, and not 0. > > Why this? Thread binding influence bind of main process? >
Hello Gabriele, At least on Linux, you cannot bind a process. When you ask hwloc to bind a process, it just binds all threads contained in this process. When you do get_cpubind on a process, it returns the logical OR of the binding of all threads. Brice
