1HWLOC-DUMP-HWDATA(1) hwloc HWLOC-DUMP-HWDATA(1)
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6 hwloc-dump-hwdata - Dump topology and locality information from hard‐
7 ware tables
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10 hwloc-dump-hwdata [options]
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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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23 hwloc may benefit from some locality and topology information from
24 SMBIOS or ACPI tables. They are accessible from raw hardware files
25 under directories such /sys/firmware/dmi/ or /sys/firmware/acpi/ on
26 Linux. These files are usually only accessible to root, and they only
27 exist 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
42 /sys/firmware/dmi/entries/160-*, and saved in file knl_memory‐
43 side_cache.
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46 hwloc(7), lstopo(1)
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512.2.0 Mar 30, 2020 HWLOC-DUMP-HWDATA(1)