slides - Spring School in Advanced Computing TACC @ UP
slides - Spring School in Advanced Computing TACC @ UP
slides - Spring School in Advanced Computing TACC @ UP
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Overlapp<strong>in</strong>g Communication and<br />
Work<br />
<strong>in</strong>clude ‘mpi.h’ <br />
program hybover <br />
!$OMP parallel <br />
if (ithread .eq. 0) then <br />
call MPI_(…,ierr) <br />
else <br />
<br />
endif <br />
!$OMP end parallel <br />
end <br />
Fortran C <br />
#<strong>in</strong>clude <br />
<strong>in</strong>t ma<strong>in</strong>(<strong>in</strong>t argc, char **argv){ <br />
<strong>in</strong>t rank, size, ierr, i; <br />
#pragma omp parallel <br />
{ <br />
if (thread == 0){ <br />
ierr=MPI_(…) <br />
} <br />
if(thread != 0){ <br />
work <br />
} <br />
} <br />
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