I would like to propose that we switch to DOLFIN supporting PETSc 3.6 only. Martin has just reported a number of bugs that in all likelihood are due to bugs in the Ubuntu/Debian PETSc 3.4 package, or in old versions of PETSc dependencies. Finding work-arounds for these is not a good use of anyone's time.
A consequence of bumping the PETSc version is that the Debian/Ubuntu packages would no longer be configured with PETSc. This isn't such a big deal since: 1. I understand that the Debian/Ubuntu PETSc package is without a maintainer, so is likely to disappear at some point; 2. Anyone who needs PETSc should be using a supported version of PETSc, which at present means building it themselves; 3. PETSc is for performance and parallel simulations, in which case it should be configured for the machine it's used on; and 4. With the fallback of EIgen for linear algebra, a DOLFIN package without PETSc would still be fast in serial and a wide range of linear solvers are available. Garth
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