This should be good enough
http://www.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-current/docs/manualpages/DA/DAGlobalToNaturalAllCreate.html Matt On Thu, Aug 27, 2009 at 12:51 PM, nicolas aunai <nicolas.aunai at gmail.com>wrote: > Hello, > > > I have a problem using 'VecScatterCreateToZero'. I attach to this > email a test code that illustrates the problem. I create a 2D DA then > I ask for the coordinates (that have been set just before), which are > returned in a global vector. I want to write the coordinates in a > file, so I use 'VecScatterCreateToZero' to put all the values in > sequential vector. It seems to work fine but sometimes (depending on > the number of proc used) the coordinates in the sequential vectors are > ordered differently. > > to run the code and see the problem : > > mpiexec -n 4 ./vecdacoord > problem.txt > > I have attached problem.txt too. > > Is someone can explain to me how I could obtain my coordinates in a > natural order ? > > > Thx > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090827/bae3aef9/attachment.htm>
