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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20       -h --help Display help message and exit.
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DESCRIPTION

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

45       hwloc(7), lstopo(1)
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502.4.1                            Feb 11, 2021             HWLOC-DUMP-HWDATA(1)
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