Sameer Agarwal b22d063075 Reduce memory usage in covariance estimation.
When using the SPARSE_QR algorithm, now a Q-less
factorization is used. This results in significantly
less memory usage.

The inversion of the semi-normal equations is now
threaded using openmp. Indeed if one has SuiteSparse
compiled with TBB, then both the factorization
and the inversion are completely threaded.

Change-Id: Ia07591e48e7958d427ef91ff9e67662f6e982c21
2013-08-16 10:48:54 -07:00
2013-06-24 14:28:40 -07:00
2013-06-24 14:28:40 -07:00
2013-08-15 10:13:45 -07:00
2013-02-24 19:04:21 +00:00
2012-04-30 23:09:08 -07:00
2013-02-15 14:29:51 -08:00

Ceres Solver - A non-linear least squares minimizer
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