Evan Um <[email protected]> writes: > Dear Jed, > > In my problem, each process has a part of contiguous rows of matrix B. In > this partitioned matrix, locations of non-zero elements are irregular > because it is a part of unstructured matrix. It is hard to define the > distribution of a vector that the partitioned matrix B is multiplied > with.
You have a square matrix, so the row and column distribution is the same. In MatMult(A,x,y), both x and y will have the same distribution. > Both MatSetSizes(B, partitioned_row_size, partitioned_row_size, > ngedges_internal, ngedges_internal) We need error messages. Always.
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