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/ that was specified
                 at configure time.

                 You may want to set the HWLOC_DUMPED_HWDATA_DIR environment variable as well so that the  hwloc
                 library looks for dumped files in that same directory.

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, cache and clustering configuration
            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.

SEE ALSO

       hwloc(7), lstopo(1)

1.11.9                                            Jan 18, 2018                              HWLOC-DUMP-HWDATA(1)