Combining Direct and Iterative Methods to Solve Very Large Sparse Equations on Massively Parallel Ar

来源 :第八届工业与应用数学国际大会 | 被引量 : 0次 | 上传用户:bitbooy
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  We have developed a hybrid solver for large sparse systems.The basis for our approach is block Cimmino where the rectangular blocks are solved by a direct method on an augmented system.The partitioning can determine whether we use a direct method or purely iterative one.We can augment the system to force orthogonality between the blocks.We show the performance of our approach on a range of large problems on several different parallel platforms.
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