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A combined unifrontal/multifrontal method for unsymmetric sparse matrices
1999
ACM Transactions on Mathematical Software
We discuss the organization of frontal matrices in multifrontal methods for the solution of large sparse sets of unsymmetric linear equations. In the multifrontal method, work on a frontal matrix can be suspended, the frontal matrix can be stored for later reuse, and a new frontal matrix can be generated. There are thus several frontal matrices stored during the factorization and one or more or these are assembled (summed) when creating a new frontal matrix. Although this means that arbitrary
doi:10.1145/305658.287640
fatcat:5efpfopl4nam3dvvvxdydsvnam