...

Jed,

Thank you. TFQMR works well now, however TCQMR doesn't. Although latter was working before I updated petsc-dev. Might be same issue? Please clarify. When was TCQMR working and when did it stop working? Was TCQMR working before you just updated in the last 24 hours? Did TCQMR work a long time ago (like TFQMR worked a long time ago?)?

Barry, that looks weird, but seems to be true: HG revision: a4dae06b4d05ef5b78a9a9aa2cbc31b2b158834f HG Date: Wed Feb 08 11:29:52 2012 -0600 --- TFQMR works, TCQMR does not HG revision: 59ca71b85d784abbe22f12c34ffcb2ccc6dc68b0 HG Date: Tue Mar 20 01:05:13 2012 -0500 --- TFQMR does not work, TCQMR works HG revision: 8f37c498b7b419ef0db5fb335a07c874e6dfe6d9 HG Date: Tue Apr 17 21:06:44 2012 -0500 --- TFQMR works, TCQMR does not Alexander

Barry