So I have to define this submatrix and extract is into this pre-set location?
On Tue, Aug 28, 2012 at 12:03 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote: > On Tue, Aug 28, 2012 at 10:56 AM, shu guo <greatgs2008 at gmail.com> wrote: >> >> Hi All, >> >> I think I made a mistake. It seems it crashes when I call the command >> of MatGetSubMatrices. There is an indication that saying, >> >> MatGetSubmatrices() is slightly different from C since the >> Fortran provides the array to hold the submatrix objects,while in C >> that >> array is allocated by the MatGetSubmatrices() >> >> What does this mean? I don't even need this command to extract the >> submatrix? > > > It means that you have to allocate the array to hold the result. > > If this seems cumbersome to you, ask yourself why you chose to write in > Fortran. ;-)
