Use standard operation in level::cuda
Use standard operation in level::cuda

ddemidov/amgcl,dondieselkopf/amgcl,ddemidov/amgcl,ddemidov/amgcl,huahbo/amgcl,dondieselkopf/amgcl,ddemidov/amgcl,dondieselkopf/amgcl,huahbo/amgcl,huahbo/amgcl