1HWLOC-DUMP-HWDATA(1)                 hwloc                HWLOC-DUMP-HWDATA(1)
2
3
4

NAME

6       hwloc-dump-hwdata  -  Dump topology and locality information from hard‐
7       ware tables
8

SYNOPSIS

10       hwloc-dump-hwdata [options]
11

OPTIONS

13       -o <dir>  save output files to directory <dir> instead of  the  default
14                 /run/hwloc/ that was specified at configure time.
15
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.
19
20       --version Report version and exit.
21
22       -h --help Display help message and exit.
23

DESCRIPTION

25       hwloc  may benefit from some locality and topology information from SM‐
26       BIOS or ACPI tables.  They are accessible from raw hardware files under
27       directories  such  /sys/firmware/dmi/  or /sys/firmware/acpi/ on Linux.
28       These files are usually only accessible to root, and  they  only  exist
29       when there is dmi-sysfs support in the Linux kernel.
30
31       The hwloc-dump-hwdata tool dumps the useful contents of such files into
32       human-readable and world-accessible files. The intent  is  to  run  the
33       tool  once during boot and have the main (non-privileged) hwloc library
34       gather information from these human-readable files.
35
36       hwloc-dump-hwdata is currently only useful for Intel Xeon  Phi  proces‐
37       sors (Knights Landing and Knights Mill).
38
39       The current list of dumped information is:
40
41       Intel Xeon Phi processor memory, cache and clustering configuration
42            gathered     from     specific     SMBIOS    entries    such    as
43            /sys/firmware/dmi/entries/14-*      and      /sys/firmware/dmi/en‐
44            tries/160-*, and saved in file knl_memoryside_cache.
45

SEE ALSO

47       hwloc(7), lstopo(1)
48
49
50
51
522.10.0                           Dec 04, 2023             HWLOC-DUMP-HWDATA(1)
Impressum