Hi, Petsc Team,

For those elliptic Poisson-style equations, the matrix is often non-symmetrical 
and costly to solve. And it's often mentioned that the incomplete Cholesky 
conjugate gradient (ICCG) method will be the best choice for handling these 
problems. 

In Petsc, the ICC preconditioner is only implemented in serial processing.  And 
parallel ICC is not available in other packages such as Hypre.  Do you know how 
to achieve an ICCG in parallel processing for an existing Petsc code without 
too much effort?

Thank you very much.



Zhisong Li

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