add OMP_NUMNER_THREADS in cpu benchmark; increase request to get gpu …

[lxning]

Description

Please read our CONTRIBUTING.md prior to creating your first pull request.
add OMP_NUMNER_THREADS in cpu benchmark; increase request to get gpu report for mnist

Please include a summary of the feature or issue being fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes #(issue)

Type of change

#2090

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Feature/Issue validation/testing

Please describe the Unit or Integration tests that you ran to verify your changes and relevant result summary. Provide instructions so it can be reproduced.
Please also list any relevant details for your test configuration.

• Test A
  Logs for Test A

• Test B
  Logs for Test B

Checklist:

• Did you have fun?
• Have you added tests that prove your fix is effective or that this feature works?
• Has code been commented, particularly in hard-to-understand areas?
• Have you made corresponding changes to the documentation?

[codecov]

Codecov Report

Merging #2092 (a19ac3a) into master (d264163) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2092   +/-   ##
=======================================
  Coverage   53.36%   53.36%           
=======================================
  Files          71       71           
  Lines        3225     3225           
  Branches       56       56           
=======================================
  Hits         1721     1721           
  Misses       1504     1504           

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[HamidShojanazeri]

Thanks @lxning , I am not just super sure if we should omp_num_threads=1. Maybe we can discuss it after weekly meeting.