Implement Henry/Walker/Dongarra style Distributed Hessenberg QR

elemental / Elemental

Distributed-memory, arbitrary-precision, dense and sparse-direct linear algebra, conic optimization, and lattice reduction

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Implement Henry/Walker/Dongarra style Distributed Hessenberg QR #176

Closed rhl- closed 7 years ago

rhl- commented 8 years ago

This will allow us to drop ScaLAPACK dependency which is a blocker for #174

rhl- commented 7 years ago

Achieved by #190

poulson commented 7 years ago

As a side note, the Henry/Walker/Dongarra approach chases one bulge per diagonal distribution block at a time and is a special case of the (now supported) multibulge implementation.