CSC/ECE 506 Spring 2010/ch 3 yl: Difference between revisions
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===DOACROSS=== | ===DOACROSS=== | ||
'''for''' 'i:=2:N-1' | '''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; | '''forall''' i:=2:N-1 '''do''' A(i):=[A(i-1) + A(i) + A(i+1)]/3; | ||
Revision as of 19:33, 20 February 2010
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;