--- /dev/null
+
+c---------------------------------------------------------------------
+c---------------------------------------------------------------------
+
+ subroutine proc_grid
+
+c---------------------------------------------------------------------
+c---------------------------------------------------------------------
+
+ implicit none
+
+ include 'applu.incl'
+
+c---------------------------------------------------------------------
+c local variables
+c---------------------------------------------------------------------
+
+c---------------------------------------------------------------------
+c
+c set up a two-d grid for processors: column-major ordering of unknowns
+c NOTE: assumes a power-of-two number of processors
+c
+c---------------------------------------------------------------------
+
+ xdim = 2**(ndim/2)
+ if (mod(ndim,2).eq.1) xdim = xdim + xdim
+ ydim = num/xdim
+
+ row = mod(id,xdim) + 1
+ col = id/xdim + 1
+
+
+ return
+ end
+
+
