Basic HTML version of Foils prepared October 2 1998

Foil 14 What's the Fuss about Performance?

From Java Grande (a.k.a. Java for High Performance Computing) in a Nutshell Sun MicroSystems Java Day at MIT (Marriot Hotel Cambridge MA) -- Sept 25 1998. by Geoffrey C. Fox
Snir and collaborators (IBM) study study 64 by 64 matrix multiplication
  • DO i =1,m
    • DO j = 1,p
      • DO k = 1,n
      • C[i][j] = C[i][j] + A[i][k]*B[k][j]
      • End DO
    • End DO
  • End DO
On IBM RS6000 model 590
  • Java JDK1.1 + JIT is 3.8 Megaflops
  • IBM ESSL Library is 253 Megaflops
m=n=p=64

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