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 /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.

       --version Report version and exit.

       -h --help Display help message and exit.

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, and they only exist when there is dmi-sysfs
       support in the Linux kernel.

       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 for Intel Xeon Phi processors (Knights Landing and Knights
       Mill).

       The current list of dumped information is:

       Intel Xeon Phi processor 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)

2.10.0                                            Dec 04, 2023                              HWLOC-DUMP-HWDATA(1)