Hi PETSc developers, In short, my question is this: Does PETSc provide a way to move or copy an object (say a Mat) from one communicator to another?
The more detailed scenario is this: I’m working on a linear algebra solver on quadtree meshes (i.e., p4est). I use communicator subsets in order to facilitate communication between siblings or nearby neighbors. When performing linear algebra across siblings (a group of 4), I need to copy a node’s data (i.e., a Mat object) from a sibling’s communicator to the communicator that includes the four siblings. From what I can tell, I can only copy a PETSc object onto the same communicator. My current approach will be to copy the raw data from the Mat on one communicator to a new Mat on the new communicator, but I wanted to see if there is a more “elegant” approach within PETSc. Thanks in advance, Damyn Chipman Boise State University PhD Candidate Computational Sciences and Engineering damynchip...@u.boisestate.edu
