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The QR algorithm for unitary Hessenberg matrices

✍ Scribed by William B. Gragg

Book ID
107987767
Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
429 KB
Volume
16
Category
Article
ISSN
0377-0427

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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