Parallelize in Mandelbrot example do not use all physical cores of an Intel Core i9 CPU
Parallelize don't use all 24 physical cores of a "13th Gen Intel® Core™ i9-13900KF × 32" processor.
Instead only the 8 "performance" cores are actually used.
Achieving only a speedup just below 8X on a processor with 24 physical cores.
It seem that parallelize algorithm implementation for this processor use performance cores instead of physical cores for sizing the thread pool.
I try changing parallelize runtime argument num_workers with substantially no practical effect, except reducing the distance from 8X with optimal values around 100.
(Mojo examples) .../mojo/examples$ mojo mandelbrot.mojo
Number of logical cores: 32
Number of physical cores: 24
Number of performance cores: 8
Vectorized: 5.576460718604651 ms
Parallelized: 0.7627593649078195 ms
Parallel speedup: 7.310904297161366
I would expect a parallel speedup below 24X, but probably above 20X.
Mandelbrot computation is highly parallelizable, but the 16 not "performance" are usually slower.
I hope this can be the first of my cent contribute to a truly promising language & friends ( Mojo->MAX&Magic
Instead only the 8 "performance" cores are actually used.
Achieving only a speedup just below 8X on a processor with 24 physical cores.
It seem that parallelize algorithm implementation for this processor use performance cores instead of physical cores for sizing the thread pool.
I try changing parallelize runtime argument num_workers with substantially no practical effect, except reducing the distance from 8X with optimal values around 100.
(Mojo examples) .../mojo/examples$ mojo mandelbrot.mojo
Number of logical cores: 32
Number of physical cores: 24
Number of performance cores: 8
Vectorized: 5.576460718604651 ms
Parallelized: 0.7627593649078195 ms
Parallel speedup: 7.310904297161366
I would expect a parallel speedup below 24X, but probably above 20X.
Mandelbrot computation is highly parallelizable, but the 16 not "performance" are usually slower.
I hope this can be the first of my cent contribute to a truly promising language & friends ( Mojo->MAX&Magic
