Parallel algorithms for QR decomposition on a shared memory multiprocessor (Q811081)
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scientific article; zbMATH DE number 4215249
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Parallel algorithms for QR decomposition on a shared memory multiprocessor |
scientific article; zbMATH DE number 4215249 |
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Parallel algorithms for QR decomposition on a shared memory multiprocessor (English)
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1991
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Empirical investigation of 2 Givens and 3 Householder type algorithms and different versions of them in Pascal (why not Fortran?) on 2 Encore Multimax shared memory parallel computers with 8 and 10 processors. One of the Householder algorithms proves to be superior. But one should be careful in generalizing the result because other memory access, compiler and synchronization primitives may change the conclusion.
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parallel algorithms
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QR decomposition
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shared memory multiprocessor
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algorithm comparison
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Givens rotations
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Householder algorithms
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