Barry Smith <[email protected]> writes: >> Yeah, or inserting an element matrix where you have several block rows. > > But that has absolutely nothing to do with MatMPIBAIJSetPreallocationCSR().
The second paragraph of Lisandro's message was specifically about MatSetValuesBlocked, and that is what I was responding to. I don't use MatMPIBAIJSetPreallocationCSR, but it has a different layout from MatSetValuesBlocked, so you can't easily switch between them. (Of course I just recommend calling MatXAIJSetPreallocation and then MatSetValuesBlocked.)
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