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Block data distribution for parallel nested dissection

Conference ·
OSTI ID:125564
; ;  [1]
  1. Universite Bordeaux, Talence (France)

In this paper, we consider the problem of data partitioning for block sparse Cholesky factorization on distributed memory MIMD computers. We propose a preprocessing algorithm which computes and distributes a column block partition based on an initial partition induced by a nested dissection ordering. This preprocessing algorithm works by optimizing load balancing under precedence constraints and communication traffic. It can be performed in linear time and space complexities.

OSTI ID:
125564
Report Number(s):
CONF-950212--
Country of Publication:
United States
Language:
English

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