Hello, Isn't this what hwloc_bitmap_list_sscanf/snprintf/asprintf do ? (added in 1.2.0)
Brice Le 19/06/2012 08:32, Rayson Ho a écrit : > hwloc already has code (linux-libnuma.h) for hwloc_cpuset_t to libnuma > data type conversion. Does it make sense to add functions to convert > hwloc_cpuset_t types to the cpuset string format used by Linux's > cgroups? > > The cpuset format used by cgroups is not difficult to handle (in fact, > the user interface is same as/very similar to the older cpuset > implementation). Eg. create a cpuset that includes CPU 2 & 3 for > OGS/Grid Engine: > > # echo 2-3 > /sys/fs/cgroup/cpuset/gridengine/cpuset.cpus > > Ref: http://www.kernel.org/doc/Documentation/cgroups/cpusets.txt > > > We are pinging the list because we use hwloc for topology binding, and > we also added cgroups support (for a lot of things) in OGS/Grid > Engine: > > http://blogs.scalablelogic.com/2012/05/grid-engine-cgroups-integration.html > > We are planning to integrate hwloc & cgroups (and skip libnuma)... And > we want to choose which method we use at runtime. While hwloc can be > used by non-root applications, the applications can modify the > affinity mask themselves and thus they can escape from the "cpuset" > (as least with the current hwloc implementation that uses > sched_setaffinity). The cgroups cpuset support is only available to > root, but once binded, batch jobs running as non-root could not escape > from the cpuset. > > Rayson > > ================================================== > Open Grid Scheduler - The Official Open Source Grid Engine > http://gridscheduler.sourceforge.net/ > _______________________________________________ > hwloc-devel mailing list > hwloc-de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel
