Hi
Thanks for all the help. I'm looking to tag several cells based on metrics
occurring at run time. In addition to the metric-defined cells I also want
to label the surrounding cells. This is no problem as I can traverse the
DMPlex chart to get the neighboring cells. The issue only arises if an
You should only use PetscViewerFileSetMode to APPEND when you first create
the viewer. You would only set it to APPEND if you destroy and recreate the
viewer for each time-step.
The append tells the viewer that when it opens the file it should move its
pointer to the end of the file
Hello team,
I recently updated by PETSc version and this error emerged:
"Cannot change mode to APPEND after setup"
I used to use PetscViewerFileSetMode to set the mode as WRITE when I first
initiate the file, and for following time steps I set it to APPEND to open
the existing file and append
