functionpetsc-3.7.6 2017-04-24result = launch(program,np,opt) % % launch(program,np) % Starts up PETSc program % % Unfortunately does not emit an error code if the launch fails and one cannot see the output % including error messages from the PETSc code. % % To debug problems we recommend commenting out the launch script from the Matlab script and % in a separate terminal starting the PETSc program manually, for example petscmpiexec -n 1 ./ex1 -info other options % The Matlab script will block on the PetscOpenSocket() until the PETSc executable is started. % see also @sreader/sreader() and PetscBinaryRead() % if nargin < 2 np = 1; else if nargin < 3 opt = '' end end % % to run parallel jobs make sure petscmpiexec is in your path % with the particular PETSC_ARCH environmental varable set %command = ['petscmpiexec -np ' int2str(np) ' ' program opt ' &']; command = [ program opt ' &']; fprintf(1,['Executing: ' command]) result = system(command)