Launching with JULIA_NUM_THREADS=<max>

[moeddel]

Actually there can julia can also compete with itself if one uses julia treads and BLAS, which by default has its own thread pool

Julia Threads vs BLAS threads

I am experimenting with Julia’s (experimental) multithreading feature recently and like the results so far. One of the problems I need to deal with, involves the multiplication of several pairs (say in the order 5 to 50) of matrices, whose size is average (say linear size in the order 10 - 1000). For that problem, there can be a competition between either using Julia threads (to loop over the different pairs) versus using multithreaded matrix multiplication provided by BLAS, and it will depend …