Hi all, As Juan said, I didn't include the -lgomp flag for f2py. Once I use that, the f2py module works with openMP as expected. Thanks, Brandt
> > Message: 1 > Date: Thu, 21 Jul 2011 11:34:13 +0200 > From: Juan <fi...@yahoo.com> > Subject: Re: [Numpy-discussion] f2py and openmp on mac os x with > gfortran > To: numpy-discussion@scipy.org > Message-ID: <4e27f295.8050...@yahoo.com> > Content-Type: text/plain; charset=UTF-8 > > Hi Brandt, I am on linux and see the same problem. It is solved (at least > here) > if you add at the end the library libgomp, i.e: > f2py -c -m play play.f90 --fcompiler=gfortran --f90flags="-fopenmp" -lgomp > Hope it helps, > Juan > > > Hello, > > I'm struggling to create openmp subroutines. I've simplified the problem > > down to the subroutine below. > > > > -- play.f90 -- > > subroutine step(soln,n) > > implicit none > > integer n,i > > real*8 soln(n) > > > > !f2py intent(in) n > > !f2py intent(out) soln > > !f2py depend(n) soln > > > > !$OMP PARALLEL DO > > do i=1,n > > soln(i) = .1 > > end do > > !$OMP END PARALLEL DO > > end subroutine step > > > > > > I compile this with the command: > > > > f2py -c -m play play.f90 --fcompiler=gfortran --f90flags="-fopenmp" > > > > This completes successfully. When I import the module, I get the > following > > error message. > > > > $ python -c 'import play' > > Traceback (most recent call last): > > File "<string>", line 1, in <module> > > ImportError: dlopen(./play.so, 2): Symbol not found: _GOMP_parallel_end > > Referenced from: /home/bbelson/Desktop/SOR/play.so > > Expected in: flat namespace > > in /home/bbelson/Desktop/SOR/play.so > > > > It seems to me that the linking step is broken, however I did not see any > > other options in the f2py documentation to change the linking step. Did I > > miss something? > > > > Thanks, > > Brandt > > >
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