Use Stride One Access

Simple Loop Nest with Poor Cache Use

do i = 1,n

do j = 1,n

a(i,j) = b(i,j)

enddo

enddo

Reversed Loop Nest to Achieve Stride One Access

do j = 1,n

do i = 1,n

a(i,j) = b(i,j )_

enddo

enddo

Previous slide

Next slide

Back to first slide

View graphic version