follow bug10, 1. gmres-ir function done, then will be truely tested after multi-precision done; 2. optimize cg and bistabcg after nccl been removed (dev22), bistabcg has been faster about 20% !!!
follow bug10, 1. gmres-ir function done, then will be truely tested after multi-precision done; 2. optimize cg and bistabcg after nccl been removed (dev22), bistabcg has been faster about 20% !!!