LOG(xALS,"Residual decrease from "<<std::scientific<<residuals[10]<<" to "<<std::scientific<<residuals.back()<<" in "<<residuals.size()-10<<" iterations.");
return;// We are done!
}else{
// LOG(xALS, "Residual decrease from " << std::scientific << residuals[10] << " to " << std::scientific << residuals.back() << " in " << residuals.size()-10 << " iterations.");
LOG(ALS,"Residual decrease from "<<std::scientific<<residuals[10]<<" to "<<std::scientific<<residuals.back()<<" in "<<residuals.size()-10<<" iterations.");