Hello all, I am using PETSc to solve linear equation using CG. I am not getting good scalability (using the MPI implementation, not GPUs). One reason can be that may be for my platform I haven't tuned the library. Other reason may be the nature of CG, that it is communication bound, at each iteration the vector (search direction) has to be communicated.
Where can I find statistics of the scalability of CG PETSc (if there is any, people may have reported)? Or can anyone give a number on how well CG PETSc scales on their environment. Lets take the simple example provided in the PETSc KSP tutorials - KSP Laplacian, 2d (ex2.c) for mesh dim of n = 150000 m = 100 Thanks Bibrak -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120402/6cbea21c/attachment.htm>
