@ -37,6 +37,7 @@ const char* AdadeltaOptimizer::SerializeState(int* state_len) {
state.set_nesterov(epsilon_);
state.set_momentum(rho_);
state.set_decay(decay_);
// can be used when memory alignment to system
*state_len += CalStateSize(parameter_,
accum_gradient_,
accum_delta_,