Hi everybody, I just want to stress test on all of my CPU threads with the multiplication of two random matrices but I got the following error: [Screenshot 2025-01-25 122207] What should I do as a Julia new user? Thank you

You need to either write Threads.@threads or import the symbol. The correct way to import the symbol would be using .Threads: @threads, but as a beginner, simply using .Threads would be okay as well.

Also note that Threads.nthreads() just returns the number of threads you’re using (e.g. 8). It does not enable anything. The -t flag you pass to the julia executable is what enables multithreading. Furthermore, A[i, :] and B[:, j] make copies. Assuming that is not what you want, you should use views…

LoadError: UndefVarError: `@threads` not defined in `Main`

New to Julia

GHTaarn January 26, 2025, 5:19am 3

Also, if you have not done so please read Please read: make it easier to help you (especially point 2 about posting code).

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LoadError: UndefVarError: `@threads` not defined in `Main`

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