The Generalized Product Bi-Conjugate Gradient (GPBiCG) solver is an alternative version of the Bi-Conjugate Gradient stabilized (CG) solver. Unlike the CG solver the GPBiCG solver can be used on non-symmetric matrices. Note that much of the success of the solver depends on the selection of the proper preconditioner.
The GPBiCG algorithm was taken from: GPBiCG(m,l): A hybrid of BiCGSTAB and GPBiCG methods with efficiency and robustness S. Fujino Applied Numerical Mathematics, Volume 41, 2002, pp 107 - 117
The example code below provides an indication of the possible use of the solver.
BiCgStabalgorithm before switching over to the
GPBiCGalgorithm before switching over to the