[petsc-users] Conceptual question about DMDA

[Yuyun Yang]

Hello team,

May I know for what types of computations is DMDA better to use compared to regular Vec/Mat? It is more complicated in terms of usage, thus so far I've only used Vec/Mat. Would DMDA improve the performance of solving large linear systems (say for variable grid spacing as a result of coordinate transforms, with finite difference method)? What considerations should go into implementing it?

Thank you very much!
Yuyun
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