PetaFlop Kernel: c). Irregular gather/scatter

PetaFlop Kernel: c). Irregular gather/scatter

• ! This loop initializes the array idx with
• ! pseudo-random numbers between 1 and n=10^8.
• do i = 1, n
  • idx(i) = 1 + mod (13131313*i, n)
• enddo
• ! Indexed loop:
• do i = 1, n
  • b(idx(i)) = a(i)
• enddo

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