-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all,
I'd like to be able to provide a matrix that is different to the actual operator for preconditioning purposes on coarse levels. I think I see how to do this for PCMG, I do KSPSetComputeOperators which migrates to the DM and will be called to setup the operators on first KSPSolve calls. On the other hand, for FAS, it looks like there is no way to do this: The SNESen on each level will call SNESSetupMatrices which, if the snes doesn't have a jacobian matrix set, will call DMCreateMatrix once to create snes->jacobian and use that for both the jacobian and the preconditioner for the jacobian. Is this right, or do I have the wrong end of the stick? Cheers, Lawrence -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJU7MmXAAoJECOc1kQ8PEYvgdMH/ip3m0z2g6wvURkiP680QZ63 peAKK9R1F5TJZt1OjZR9d99YcplHwsTi7EemEAJ6kaDlo1QVJ+aGTh00EcaR9yiT lT0zlJQ8vsSa7Wwn12OGa02kZ6jh9wdRJJOhpSJoqdSih2zMhlcBYjgR1VupxpbT ALF9TMrxi1086y7237ukbcuQh4MCidzY8t5pwglNGjGVzGMRprWGhW+0nv9Wie7f gY6r0NAfyGc3Yi7FQvPupi07WMo1hDwnRaWVah3w11JCqVRPZXs3XxKD/KaZO/cN 0HJ70WDNJWCR1gnQ2fdFIR5grm5Dr6xIJ2rtUbBCRwldi3ZhdcmHVfjMD3o75r0= =AB63 -----END PGP SIGNATURE-----
