cyb70289 opened a new pull request, #13112:
URL: https://github.com/apache/arrow/pull/13112
This patch separates OS and ARCH depdendent code and removes CPU
[24/1987]
frequency detection (cycles_per_ms()) which is brittle and not very
useful in practice.
There are still many caveats, especially for Arm platform. It's better
to adopt a mature library if we want more complete functionalities.
E.g., github.com/pytorch/cpuinfo.
Below are examples of cpu info detected on various platforms (some
from virtual machines).
Intel, Linux
------------
Vendor: Intel
Model: Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz
Features (set bits): 0 1 2 3 4 5 6 7 8 9 10 11 12
Cache sizes: 32768 1048576 37486592
AMD, Linux
----------
Vendor: AMD
Model: AMD EPYC 7251 8-Core Processor
Features (set bits): 0 1 2 3 4 5 11 12
Cache sizes: 32768 524288 33554432
Intel, MacOS
------------
Vendor: Unknown
Model: Unknown
Features (set bits): 0 1 2 3 4
Cache sizes: 32768 262144 12582912
Intel, Windows
--------------
Vendor: Intel
Model: Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz\0\0
Features (set bits): 0 1 2 3 4 5 6 7 8 9 10 11 12
Cache sizes: 131072 2097152 37486592
Intel, MinGW
------------
Vendor: Intel
Model: Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz\0\0\0\0\0\0\0
Features (set bits): 0 1 2 3 4 5 11 12
Cache sizes: 131072 524288 52428800
Arm, Linux
----------
Vendor: Unknown
Model: Unknown
Features (set bits): 32
Cache sizes: 65536 1048576 Unknown
Arm, MacOS
----------
Vendor: Unknown
Model: Unknown
Features (set bits): 32
Cache sizes: 65536 4194304 Unknown
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