OpenMP Use: Data Privatization

• Most data structures are “private”.

  • Each thread has its own copy.

• Syntactic forms:

Program Seismic

...

C$OMP PARALLEL

C$OMP+PRIVATE(a)

a = “local computation”

call x()

C$END PARALLEL

Subroutine x()

common /cc/ d

c$omp threadprivate (/cc/)

real b(100)

...

b() = “local computation”

d = “local computation”

...

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