Is this still an issue for you? If so could you build both 3.5.1 and 3.5.2 from the tarballs using the --download-xxx options for installing external packages then compile and run the same application with both with the same options and send the output from running both with -log_summary. This will help us see if the the memory/performance between the two has somehow unexpectedly changed.
Barry > On Feb 6, 2015, at 8:53 AM, Manav Bhatia <[email protected]> wrote: > > >> On Feb 5, 2015, at 11:18 PM, Barry Smith <[email protected]> wrote: >> >>> I am trying to use an lu decomposition method for a relatively large >>> matrix (~775,000 dofs) coming from a thermoelasticity problem. >>> >>> For the past few weeks, LU solver in 3.5.1 has been solving it just fine. >>> I just upgraded to 3.5.2 from macports (running on Mac OS 10.10.2), and am >>> getting the following “out of memory" error >> >> This is surprising. The changes are 3.5.1 to 3.5.2 are supposed to be only >> minor bug fixes. Is the code otherwise __exactly__ the same with the same >> options? Are all the external libraries exactly the same in both cases? > > The 3.5.1 version I had been using was one that I had downloaded from the > petsc website and compiled myself, without some external packages, like > MUMPS, suitesparse and superlu. > > The 3.5.2 version was build by macports with the added options of MUMPS, > suitesparse and superlu. > > My source code remained the same between these separate runs. > > I will try rebuilding this from scratch to see if it makes any change. > > -Manav
