1HWLOC-DUMP-HWDATA(1)                 hwloc                HWLOC-DUMP-HWDATA(1)
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NAME

6       hwloc-dump-hwdata  -  Dump topology and locality information from hard‐
7       ware tables
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SYNOPSIS

10       hwloc-dump-hwdata [options]
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OPTIONS

13       -o <dir>  save output files to directory <dir> instead of  the  default
14                 /run/hwloc/ that was specified at configure time.
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16                 You  may  want to set the HWLOC_DUMPED_HWDATA_DIR environment
17                 variable as well so that the hwloc library looks  for  dumped
18                 files in that same directory.
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DESCRIPTION

21       hwloc  may  benefit  from  some  locality and topology information from
22       SMBIOS or ACPI tables.  They are accessible  from  raw  hardware  files
23       under  directories  such  /sys/firmware/dmi/  or /sys/firmware/acpi/ on
24       Linux.  These files are usually only accessible to root, and they  only
25       exist when there is dmi-sysfs support in the Linux kernel.
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27       The hwloc-dump-hwdata tool dumps the useful contents of such files into
28       human-readable and world-accessible files. The intent  is  to  run  the
29       tool  once during boot and have the main (non-privileged) hwloc library
30       gather information from these human-readable files.
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32       hwloc-dump-hwdata is currently only useful for Intel Xeon  Phi  proces‐
33       sors (Knights Landing and Knights Mill).
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35       The current list of dumped information is:
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37       Intel Xeon Phi processor memory, cache and clustering configuration
38            gathered     from     specific     SMBIOS    entries    such    as
39            /sys/firmware/dmi/entries/14-*                                 and
40            /sys/firmware/dmi/entries/160-*,  and  saved  in  file knl_memory‐
41            side_cache.
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SEE ALSO

44       hwloc(7), lstopo(1)
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491.11.12                          Dec 13, 2018             HWLOC-DUMP-HWDATA(1)
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