Fixes the cpuinfo_get_max_arm_sve_length API bug on NON-SVE supported hardware.

[maajidkhann]

The current API - cpuinfo_get_max_arm_sve_length() when integrated into PyTorch works well on SVE supported hardware but when tested on Graviton2 (NON SVE hardware), it fails with the below error.

This PR fixes this bug on Non SVE supported hardware:

Changes:
cpuinfo_log_error (wrong change) -> cpuinfo_log_warning (Right change)

[maajidkhann]

@malfet Please review and merge this small change.

[ng-05]

cpuinfo_log_error() does not terminate the execution. Can you please tell how replacing cpuinfo_log_error() with cpuinfo_log_waring() fixes the graviton2 test failure?

[maajidkhann]

cpuinfo_log_error() does not terminate the execution. Can you please tell how replacing cpuinfo_log_error() with cpuinfo_log_waring() fixes the graviton2 test failure?

I made this change in cpuinfo and called the API from PyTorch on Graviton 2. I don't see it terminating the execution now like earlier.

cpuinfo_log_warning() doesn't terminate the execution, it just a warning. You can also see same is being used multiple times in the same file.
https://github.com/pytorch/cpuinfo/pull/258/files#diff-9536970666a7b45882a2719305c3eb2456da2f385d06ac01648dfa40e76ab311L82

https://github.com/pytorch/cpuinfo/pull/258/files#diff-9536970666a7b45882a2719305c3eb2456da2f385d06ac01648dfa40e76ab311L86

https://github.com/pytorch/cpuinfo/pull/258/files#diff-9536970666a7b45882a2719305c3eb2456da2f385d06ac01648dfa40e76ab311R53

[ng-05]

cc: @fbarchard @digantdesai
can we please try to merge this fix. The pytorch aarch64 CI will keep on failing without this change

[digantdesai]

I don't think cpuinfo_log_error should terminate, stamping to unblock. FYI, we will need to update this in PyTorch too - https://github.com/pytorch/pytorch/tree/main/third_party

[maajidkhann]

I don't think cpuinfo_log_error should terminate, stamping to unblock. FYI, we will need to update this in PyTorch too - https://github.com/pytorch/pytorch/tree/main/third_party

Yes the cpuinfo needs to be updated in PyTorch to reflect the changes in PyTorch PR CI:
https://github.com/pytorch/cpuinfo/tree/fa1c679da8d19e1d87f20175ae1ec10995cd3dd3

@digantdesai Will you be able to update it?