On 11/10/2011 06:43 PM, petsc-users-request at mcs.anl.gov wrote: > how to speed up convergence?
Dear Matt and Jed, 1. I use the conservative variables. 2. No limiter. 3. Boundary conditions are weakly imposed (to solve the riemann problem). 4. mat_fd_type ds is worse for the current case 5. sub_pc_type lu did a better work but not to a satisfactory level 6. MATCOLORINGSL is used. For the preconditioner I need to do some changes. Please help me first to understand the coloring types in order to choose the best one (any web pages, links etc.?). Thank you, Kostas
