Updated version of multithreading TEST_CPU Fortran.uk Polyhedron Fortran Benchmark : that single thread (https://openbenchmarking.org/test/pts/polyhedron&eval=111335e02dea1589bab7a9564f8efef17d907dcb#metrics) Implemented by: David Frank  [email protected], original gauss Tim Prince   [email protected], Crout James Van Buskirk  [email protected], Jos Bergervoet [email protected]. NOW gauss single thread with looping repetition OpenMP, crout single thread with looping repetition OpenMP, crout multi thread, and implementing with vendor blas lapack instead building own. by default as same as phoroix is 1000 repetition dual inversing 250x250, and 2000x2000 dual inversing, and check the difference.

Example: ryzen 3900x
C:\Temp>test_fpu_gemini_mt5.exe
 Inside arraySub() allocating memory ...
 Memory allocation sufficient
  Benchmark running, hopefully as only ACTIVE task
  Number of OpenMP threads:           24
Test1: Gauss  mt- 1000 (   250x   250) inverts in   0.723 seconds  Err=  0.5971541960567150E-14
Test2: Croutstmt- 1000 (   250x   250) inverts in   0.865 seconds  Err=  0.7541962840872367E-14
 Calling Croutmt- 1 Bigsize
 Calling Croutmt- 2 Bigsize
Test3: Croutmt-    2 (  2000x  2000) inverts in   3.016 seconds  Err=  0.9010735252907198E-09
Test4: DGETRF -    2 (  2000x  2000) inverts in   0.294 seconds  Err=  0.2360292208074361E-11
Test5: DGETRF2-    2 (  2000x  2000) inverts in   0.289 seconds  Err=  0.2635024887233167E-11
Test6: DGESV  -    2 (  2000x  2000) inverts in   0.199 seconds  Err=  0.2345595889465859E-11
                             Total =  5.4 sec