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The Reduction Case
•Partial
reduction applies reduction to an array to produce a subarray … two regions
needed
•“Statement
region” specifies the shape of the result
•“Expression
region” specifies the shape of the operand
•The subarray that is combined is the subarray of the operand formed by
the singleton dimensions
[1..m,1] Max1 :=
max<< [1..m,1..n] A;
Statement region
Max1 declared [1..m, 1]
Partial reduction
Expression region
A declared [1..m, 1..n]