On Fri, Mar 28, 2014 at 8:18 AM, 吕超 <[email protected]> wrote:
> > Your faithfully: > Can you tell me whether I need to caculate the exact diag and > off-diag arrays related to the nonzeros numbers when I use subroutine > MatMPIBAIJSetPreallocationCSR to allocate memory? > > I have read this website " > http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatMPIAIJSetPreallocationCSR.html";, > but I don't understand it clealy. > All preallocation routines behave in the same way. If you give to little memory, it will give an error unless you use MatSetOption(A, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_FALSE) Matt > So can you tell me where can I find the example of > MatMPIBAIJSetPreallocationCSR? > > Thanks! > > your sincerely > > LV CHAO > > 2014/3/28 > > > > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener
