[petsc-dev] Lower memory DMDA

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:

> On May 8, 2013, at 7:54 AM, Peter Brune <prbrune at gmail.com> wrote:
>
>     You guys are speculating too much. Create a DMDA characteristic
>     for their code with reasonably large array dimensions and then
>     -malloc_dump it (or something similar) to find out where the
>     memory actually is. Then given this table of sizes propose
>     changes, not before.

I remember doing this before, maybe last time the issue was discussed
here.  Flaky internet here is making it hard to find the thread.
Anyway, they want to have a total of two or three vectors that use all
available memory, thus they need to eliminate all inessential
problem-sized data.