Scalable decomposition (3)

• To the extent that you can arrange your decomposition to scale with the number of processors, it is a very good idea to create the scripts using a function of the number of nodes anywhere that a node number must be explicitly specified.
• E.g., createmap /library/rec /retina/recplane \
• {REC_NX / n_slices} {REC_NY} \
  • -delta {REC_SEPX} {REC_SEPY} \
• -origin
  {-REC_NX * REC_SEPX / 2 + \
• slice * REC_SEPX * REC_NX / n_slices} \
  {-REC_NY * REC_SEPY / 2}

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