Andrew Somorjai, le Tue 20 Nov 2012 01:39:47 +0100, a écrit : > "CreateThread() and WaitForMultipleObjects() are not in hwloc since they have > nothing to do with topologies." > > I thought hwloc was also for threading?
It can bind your threads, yes, but the way to create the thread is yours, it can be CreateThread, or OpenMP, etc... > "DWORD_PTR m_id = 0; > DWORD_PTR m_mask = 1 << i; > > m_threads[i] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)threadMain, > (LPVOID)i, NULL, &m_id); > SetThreadAffinityMask(m_threads[i], m_mask); > > This will likely be something such as: > > hwloc_bitmap_t bitmap = hwloc_bitmap_alloc(); > hwloc_bitmap_set_only(bitmap, i); > hwloc_set_thread_cpubind(topology, m_threads[i], bitmap, 0); > hwloc_bitmap_free(bitmap);" > > How would I pass a function like threadMain in the above CreateThread > function into the thread itself. Someone told me to use this library for this > purpose so I wasn't sure what it was made for. You should indeed use hwloc to replace the SetThreadAffinityMask, but keep your CreateThread. > How would I create an array m_threads and pass it > into hwloc_set_thread_cpubind. I would still need this part then correct? > > m_threads[i] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)threadMain, > (LPVOID)i, NULL, &m_id); Yes, something like: m_threads[i] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)threadMain, (LPVOID)i, NULL, &m_id); hwloc_bitmap_t bitmap = hwloc_bitmap_alloc(); hwloc_bitmap_set_only(bitmap, i); hwloc_set_thread_cpubind(topology, m_threads[i], bitmap, 0); hwloc_bitmap_free(bitmap);" > I would like to be independent of windows.h by the way, not using windows > api calls is the motivation for all of this. Ah, then you may want to also use the pthread-win32 package, which is meant to replace CreateThread, and use pthread_getw32threadhandle_np in the windows case to convert from pthread-win32's pthread_t into a HANDLE for hwloc. Samuel
