If you wish all the entries on one or all processes then see http://www.mcs.anl.gov/petsc/documentation/faq.html#mpi-vec-to-seq-vec or http://www.mcs.anl.gov/petsc/documentation/faq.html#mpi-vec-to-mpi-vec
if you want a subset of entries from other processes on each process then you need to see the manual page for VecScatterCreate(). Barry > On May 12, 2016, at 12:32 AM, [email protected] wrote: > > Dear professor: > i need to access the vector values which are not locted in local cpu. > how to obtain them. > Regards
