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int i, j, k[nxproc][nyproc]; plural int a, b;
i = i+j;singular
a = a*i+b;plural
j = a*i+b;illegal!
All PEs would store their results in singular !
k[ixproc][iyproc] = a*i+b;plural
Each PE stores its result in a different location of the singular matrix on the ACU.