On Mon, 18 Jan 2010 16:32:22 -0500, "(Rebecca) Xuefei YUAN" <xy2102 at columbia.edu> wrote: > Dear Jed, > > I got some origins, but I still do not understand what is going on here? > > Here is a piece of uninitialised value from
I think you have an indexing error while reading from this local vector in your residual evaluation. The contents of the array are explicitly initialized to zero in VecCreate_Seq, but when memalign is not available (your trace indicates this is so) PetscMallocAlign allocate a little extra space and aligns the result, leaving a few bytes uninitialized (memory further away may also be uninitialized, but this error isn't saying complaining about those places). Jed
