NAME

       hwloc-dump-hwdata - Dump topology and locality information from hardware tables

SYNOPSIS

       hwloc-dump-hwdata [options]

OPTIONS

       -o <dir>  save output files to directory <dir> instead of the default /var/run/hwloc/.

DESCRIPTION

       hwloc  may  benefit  from  some  locality  and topology information from SMBIOS or ACPI tables.  They are
       accessible from raw hardware files under directories such /sys/firmware/dmi/  or  /sys/firmware/acpi/  on
       Linux.  These files are usually only accessible to root.

       The  hwloc-dump-hwdata  tool  dumps  the  useful  contents  of  such files into human-readable and world-
       accessible files. The intent is to run the tool once during boot and have the main (non-privileged) hwloc
       library gather information from these human-readable files.

       hwloc-dump-hwdata is currently only useful on Intel Knights Landing Xeon Phi platforms.

       The current list of dumped information is:

       Intel Knights Landing memory-side cache characteristics
            gathered   from   specific   SMBIOS   entries    such    as    /sys/firmware/dmi/entries/14-*    and
            /sys/firmware/dmi/entries/160-*, and saved in file knl_memoryside_cache.

       If  the output directory is changed, you may want to set the HWLOC_DUMPED_HWDATA_DIR environment variable
       accordingly so that the hwloc library finds the dumped files.

SEE ALSO

       hwloc(7), lstopo(1)

1.11.2                                            Dec 17, 2015                              HWLOC-DUMP-HWDATA(1)