Restrict rocfft/hipfft concurrency by omp max threads.

[malcolmroberts]

Motivation

Allow the user to restrict the concurrency for rocFFT/hipFFT by setting OMP thread limits

Technical Details

We take the minimum of omp_get_max_threads and the hardware concurrency.

Test Plan

Testing by usual CI

Test Result

Run CI

Submission Checklist

• [ x] Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
projects/rocfft/shared/concurrency.h	75.00%	1 Missing ⚠️

❌ Your project status has failed because the head coverage (48.47%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #8743      +/-   ##
===========================================
+ Coverage    71.43%   71.52%   +0.09%     
===========================================
  Files         2612     2612              
  Lines       407002   407021      +19     
  Branches     60775    60770       -5     
===========================================
+ Hits        290729   291103     +374     
+ Misses       94967    94659     -308     
+ Partials     21306    21259      -47     

Flag	Coverage Δ		*Carryforward flag
TensileLite	76.81% <ø> (ø)		Carriedforward from acf8006
hipBLAS	90.81% <ø> (ø)		Carriedforward from acf8006
hipBLASLt	41.33% <ø> (ø)		Carriedforward from acf8006
hipCUB	82.68% <ø> (ø)		Carriedforward from acf8006
hipDNN	86.72% <ø> (ø)		Carriedforward from acf8006
hipFFT	49.92% <ø> (-0.87%)	⬇️
hipRAND	76.12% <ø> (ø)		Carriedforward from acf8006
hipSOLVER	69.18% <ø> (ø)		Carriedforward from acf8006
hipSPARSE	86.55% <ø> (ø)		Carriedforward from acf8006
rocBLAS	48.08% <ø> (ø)		Carriedforward from acf8006
rocFFT	48.47% <75.00%> (+1.25%)	⬆️
rocRAND	57.07% <ø> (ø)		Carriedforward from acf8006
rocSOLVER	77.89% <ø> (ø)		Carriedforward from acf8006
rocSPARSE	72.37% <ø> (ø)		Carriedforward from acf8006
rocThrust	91.34% <ø> (ø)		Carriedforward from acf8006

*This pull request uses carry forward flags. Click here to find out more.

Files with missing lines	Coverage Δ
projects/rocfft/shared/concurrency.h	75.00% <75.00%> (+12.50%)	⬆️

... and 44 files with indirect coverage changes

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