Hi,<br><br>I solve a system Ax = b using a BiCGSTAB solver of dune. The solver fails & gives an error:<br><b><br>DUNE ERROR: ISTLError [apply:/home/sj/dune/dune-istl/dune/istl/solvers.hh:766]: breakdown in BiCGSTAB - rho 0 <= EPSILON 1e-80 after 1956.5 iterations</b><br>
<br>Can someone please tell me the reason of the error & how to avoid it?<br><br>Regards,<br>Swayam<br>