Hi, Is there any easy way to run a for loop in parallel in FreeFem++? For example the majority of code below could be run in parallel: int N = 1e6; real[int] a(N), b(N); // This loop could be parallel: for (int i = 0; i < N; i++) { a(i) = i; b(i) = -i; } real[int] c(N); // Also this could b…

[image] Solving a lot of independent ODEs in parallel General Discussion Use MPI, it’s an embarrassingly parallel job, so trivial to parallelize. int ntask = 200; for(int i = (mpirank * ntask) / mpisize; i < ((mpirank + 1) * ntask) / mpisize; ++i) { cout << "process #" <…

you can use MPI and run each loop on a proc

Are there any simple examples on that?

Hello, distractor. I am a starter and I want to run a for loop in parallel, too! It seems that you have succeeded and would you please show your codes to me? Thanks a lot!

You can look at the examples, search for “mpirank” but if you do this be sure to check the wall clock time. AFAICT, this generates processes and communicators etc. For something short you may benefit more from thrads communicating with shared memory. In my c+ code I use openmp compiler directive…

Parallel for loop in freefem

General Discussion

prj September 15, 2021, 8:27am 4

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Parallel for loop in freefem

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