Hi SciDB users,
Is there a shorthand way to tell SciDB that the “C” matrix in GEMM(A,B,C) should be all zeros? I.e. is there a way to compute AB + 0 without needing to materialize a matrix of zeros?
Simply create the C matrix, but do not store any data into it. When a sparse matrix is given to gemm, all missing cells are treated as 0.
We actually have a (low priority) ticket to address this in a future release. Eventually the C matrix will become optional.