Dear all, I basically use PETSc inside an existing OpenMP application. All PETSc solves are done in serial in this application. I therefore do not need MPI (at the moment...). The code solves finite element problems, where the OpenMP environment is used to use various parameters for these systems. All private variables are allocated on the stack, the OpenMP parallel loop makes calls to PETSc. Thanks for your replies, Patrick
On 10/9/06, Barry Smith <bsmith at mcs.anl.gov> wrote: > > > Patrick, > > Are you using "user level threads", that is your code stops > and starts additional threads directly or are you using loop level > threads, that is OpenMPI manages all the threads for you. If the > later you are fine, if the former make sure only one thread > makes PETSc calls. > > Barry > > > On Mon, 9 Oct 2006, Patrick Lechner wrote: > > > Dear all, > > I am currently writing a code and try to combine PETSc and OpenMP (where > > PETSc will be used inside a parallel environment). > > My questions now are: > > 1. Is it safe to combine these libraries? > > 2. What will I have to consider to make my code work reliably? > > Thanks a lot for your help. > > Best wishes, > > Patrick > > > > -- ================================= Patrick Lechner Numerical Analysist / Numerical Modeller Flat 1 159 Hardgate Aberdeen, AB11 6XQ Phone: 07815 927333 E-mail: patrick at lechner.com Homepage: http://www.patrick.lechner.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20061009/a3c4dfde/attachment.htm>
