| commit | 0e2743e24d013b25109396cfa0d8d0f1e8e84964 | [log] [tgz] |
|---|---|---|
| author | Sameer Agarwal <sameeragarwal@google.com> | Wed Oct 23 14:51:07 2013 -0700 |
| committer | Keir Mierle <mierle@gmail.com> | Thu Oct 24 19:40:38 2013 +0000 |
| tree | ddb1436da6ee053cd63cb1ecd7b1c2af32f1e7a6 | |
| parent | 6a2bcaa1d55d38bc10d043f1458657caac2be7a7 [diff] |
Add BlockRandomAccessDiagonalMatrix. This class is used in the SchurJacobiPreconditioner for storing the preconditioner matrix. Using it speeds up the computation of the preconditioner by ~15% due to the elimination of a hash table lookup. Change-Id: Iba2b34aad0d9eb9bcb7f6e6fad16aa416aac0d2a