I think I am seeing this too on a custom program, so probably not your application's fault. Brice
Le 13/08/2011 10:37, Gabriele Fatigati a écrit : > > > Dearhwloc users and developers, > > I'm using hwloc 1.2 stable version Intel 11 compiled and checking my > little application with valgrind 3.5. > > My app calls hwloc_set_area_membind_nodeset() function from a OpenMP > thread: > > hwloc_set_area_membind_nodeset(topology, mem, 10000, nodeset, > HWLOC_MEMBIND_BIND, HWLOC_MEMBIND_THREAD | HWLOC_MEMBIND_STRICT | > HWLOC_MEMBIND_NOCPUBIND ) > > membind seems to work well, but valgrind give me a follow warning: > > ==2904== Syscall param mbind(nodemask) points to unaddressable byte(s) > ==2904== at 0x4FF33C1: syscall6 (in /usr/lib64/libnuma.so.1) > ==2904== by 0x4FF3436: mbind (in /usr/lib64/libnuma.so.1) > ==2904== by 0x4C208AC: hwloc_linux_set_area_membind > (topology-linux.c:1071) > ==2904== by 0x4C1AC3E: hwloc_set_area_membind_nodeset (bind.c:396) > ==2904== by 0x402165: bind_memory_tonode (main.c:97) > ==2904== Address 0x5a64978 is 0 bytes after a block of size 8 alloc'd > ==2904== at 0x4A05140: calloc (vg_replace_malloc.c:418) > ==2904== by 0x4C20646: hwloc_linux_membind_mask_from_nodeset > (topology-linux.c:996) > ==2904== by 0x4C2083E: hwloc_linux_set_area_membind > (topology-linux.c:1054) > ==2904== by 0x4C1AC3E: hwloc_set_area_membind_nodeset (bind.c:396) > ==2904== by 0x401CBB: bind_memory_tonode (main.c:97) > > valgrind has --tool=memcheck --leak-check=full exec flags. > > It give me the same warning also with just one byte memory bound. > > Is it a hwloc warning or my applications warning? > > Thanks in forward. > > > > > > -- > Ing. Gabriele Fatigati > > HPC specialist > > SuperComputing Applications and Innovation Department > > Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy > > www.cineca.it <http://www.cineca.it> Tel: +39 051 > 6171722 > > g.fatigati [AT] cineca.it <http://cineca.it> > > > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users
