Tpetra: Add robust calculation mode
Created by: mhoemmen
@trilinos/tpetra
Moved from Bugzilla Bug 241: https://software.sandia.gov/bugzilla/show_bug.cgi?id=241
Original text by @maherou on 15 Feb 2003:
In some form the following features should be added:
- Guards against over/underflow in key kernels. Clearly in the two-norm, but perhaps elsewhere if possible.
- Quad-precision accumulator for sums.
- Scale-invariant global sums. Sum quantities should be bit-wise identical independent of the number of processors used, with perhaps a prescribed maximum processor count to aid implementation.