A blocked QR-decomposition for the parallel symmetric eigenvalue problem
نویسندگان
چکیده
منابع مشابه
A blocked QR-decomposition for the parallel symmetric eigenvalue problem
In this paper we present a new stable algorithm for the parallel QR-decomposition of ”tall and skinny” matrices. The algorithm has been developed for the dense symmetric eigensolver ELPA, whereat the QR-decomposition of tall and skinny matrices represents an important substep. Our new approach is based on the fast but unstable CholeskyQR algorithm [1]. We show the stability of our new algorithm...
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ژورنال
عنوان ژورنال: Parallel Computing
سال: 2014
ISSN: 0167-8191
DOI: 10.1016/j.parco.2014.03.010