How to partition cartesian grid for MPI in fortran -- CFD Online Discussion Forums

January 16, 2008, 01:11	How to partition cartesian grid for MPI in fortran	#1
CF Guest Posts: n/a	Hi, I'm programming in fortran and I'm trying to use a parallel solver known as Hypre, which is a library written in C. I'm working with cartesian grid and I wonder how I should partition my grid to run in parallel. Which is the best option for a cartesian grid of size_xsize_y, asuming to be divided to 4 grids? : 1. 4 (size_x/4)size_y grids 2. 4 size_x(size_y/4) grids 3. 4 (size_x/2)(size_y/2) grids Is there some clear advantage of 1 over the other? Thanks

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