performance difference between jit.submatrix & jit.matrix @usesrcdim 1?

    Scott Fitzgerald
    Aug 18 2008 | 12:41 pm
    I'm curious if there is any benefit to using a matrix with @usesrcdim 1 (named or otherwise) vs jit.submatrix.
    I vaguely remember a question along these lines from a few years ago but I can't find it in the archives.
    if it makes a difference, these would ultimately be a few levels deep.
    Thanks. ~s
    • Rob Ramirez
      Aug 18 2008 | 3:40 pm
      no experience here to relate, but this sounds like a perfect case for a quick speed test.
    • Alexandre
      Aug 24 2008 | 9:00 pm
      jit.matrix seems at least 3 times more fast than jit.submatrix, see by yourself: