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About Preconditioner, is my code wrong?

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cglwdm
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Dear experts,

Eigen::BiCGSTAB<SpMat,Eigen::IncompleteLUT<double>> solver; //results not right

Eigen::BiCGSTAB<SpMat,Eigen::DiagonalPreconditioner<double>> solver; //results not right

Eigen::BiCGSTAB<SpMat,Eigen::IdentityPreconditioner> solver; //results right

Eigen::BiCGSTAB<SpMat,Eigen::SuperILU<SpMat>>solver; //results right, but with the message "error in mc64A/D. INFO(1)=-2"


What is wrong?


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