CSC/ECE 506 Spring 2010/ch 3 yl

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Supplement to Chapter 3: Support for parallel-programming models. Discuss how DOACROSS, DOPIPE, DOALL, etc. are implemented in packages such as Posix threads, Intel Thread Building Blocks, OpenMP 2.0 and 3.0.

Parallel-programming models

DOALL

for    i:=2:N-1 do A(i):=[A(i-1) + A(i) + A(i+1)]/3; next i;
forall i:=2:N-1 do A(i):=[A(i-1) + A(i) + A(i+1)]/3;

DOACROSS

for 'i:=2:N-1'

do A(i):=[A(i-1) + A(i) + A(i+1)]/3; next i;
forall 

'i:=2:N-1' do A(i):=[A(i-1) + A(i) + A(i+1)]/3;

DOPIPE

Implementation

References

  1. wikipedia: Parallel Computing