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Foil 26 Matrix Multiplication Pseudocode, continued

From CPS615-Linear Programming and Whirlwind Full Matrix Discussion Delivered Lectures of CPS615 Basic Simulation Track for Computational Science -- 5 Decemr 96. by Geoffrey C. Fox *
Secs 141.1
1 Assume that each processor has array coords, which tell its position in the processor grid and a "rows" communicator group is created:
  • MPI_Cart_coords(comm2d, myrank, 2, coords)
  • MPI_Cart_sub(comm2d, [F,T], comm2drows)
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