Shifting Strategies for the Parallel $QR$ Algorithm
โ Scribed by Watkins, David S.
- Book ID
- 118188725
- Publisher
- Society for Industrial and Applied Mathematics
- Year
- 1994
- Tongue
- English
- Weight
- 917 KB
- Volume
- 15
- Category
- Article
- ISSN
- 1064-8275
- DOI
- 10.1137/0915057
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๐ SIMILAR VOLUMES
We propose a new parallelization scheme for the Hessenberg double shift QR algorithm. Our scheme allows software pipelining and communication latency hiding, and gives almost perfect load balance. An asymptotic parallelizing overhead analysis shows that our scheme attains the best possible scalabili
This paper describes a prototype parallel algorithm for approximating eigenvalues of a dense nonsymmetric matrix on a linear, synchronous processor array. The algorithm is a parallel implementation of the explicitly-shifted QR, employing n distributed-memory processors to deliver all eigenvalues in