| 摘要 |
The coefficient matrix, corresponding to the simultaneous linear equations to be solved, is divided into a plurality of row sets. The row sets as divided are processed in a parallel fashion, and entries specifying the nonzero elements contained in the first to n<th >row sets are added to the entry sets E1 to En. Moreover, in regard to each row set, fill-ins which take place at the time of eliminating the i<th >variable are obtained in a parallel fashion, and entries specifying the fill-ins are added to the entry sets E1 to En. The coefficient matrix is compressed using those entry sets E1 to En.
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