Re: [Gretl-devel] matrix_perf

Dear Allin, One more test. I hope it helps: Running on my MacBook Pro (2.6 GHz Intel Core i5, 8 GB 1600 MHz DDR3 / OS X10.9.3): ? matrix_perf(1234) dgemm experiment 1, variant 1, speed in Gflops m n k vanilla veclib 128 128 128 1,5164 9,8566 128 128 256 2,4117 19,294 128 128 512 2,0505 18,455 128 128 1024 2,3967 16,777 128 128 2048 2,2370 13,422 result: veclib dominates Aviso: foram gerados valores n'Äûo-finitos dgemm experiment 1, variant 2, speed in Gflops m n k vanilla veclib 128 128 128 2,1904 19,713 256 256 128 2,3069 18,455 512 512 128 2,6844 nan 1024 1024 128 2,4403 26,844 2048 2048 128 2,3861 17,896 result: veclib dominates for mnk >= 134217728 Aviso: foram gerados valores n'Äûo-finitos dgemm experiment 1, variant 3, speed in Gflops m n k vanilla veclib 128 128 128 2,1904 4,9283 256 256 256 2,3967 nan 512 512 512 2,2370 nan 1024 1024 1024 2,0452 26,844 2048 2048 2048 1,8103 20,951 result: veclib dominates for mnk >= 1073741824 dgemm experiment 2, variant 1, speed in Gflops m n k vanilla veclib 8 8 8 0,21787 0,32000 16 8 8 0,35310 0,56889 32 8 8 0,51200 0,85333 64 8 8 0,85333 1,1378 128 8 8 1,1378 2,0480 256 8 8 1,2800 2,0480 512 8 8 1,7067 2,5600 1024 8 8 1,4629 2,0480 2048 8 8 1,4629 2,5600 4096 8 8 1,7067 2,0480 result: veclib dominates dgemm experiment 2, variant 2, speed in Gflops m n k vanilla veclib 10 2 1000 1,5038 3,7037 20 2 1000 1,8018 4,6512 40 2 1000 1,5038 3,8462 80 2 1000 1,5152 4,2553 160 2 1000 1,7544 5,8824 320 2 1000 1,7544 4,4444 640 2 1000 1,5748 3,2258 1280 2 1000 2,0619 2,8571 2560 2 1000 2,0833 2,9851 5120 2 1000 2,1978 2,8571 result: veclib dominates dgemm experiment 2, variant 3, speed in Gflops m n k vanilla veclib 10 10 1000 1,4286 8,0000 20 10 1000 1,9048 10,000 40 10 1000 1,7391 10,000 80 10 1000 2,1053 13,333 160 10 1000 2,3529 13,333 320 10 1000 2,2222 13,333 result: veclib dominates Operating system: Mac OS X (64-bit) BLAS library: Apple VecLib Number of processors: 4 OpenMP enabled: no Performance summary: vanilla - dominates outright in 0 out of 6 tests veclib - dominates outright in 4 out of 6 tests dominates in 2 test(s) for mnk >= (134217728, 1073741824)