QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: huangshenjie on January 10, 2013, 05:51

Title: The Device Calculation cannot converge~~
Post by: huangshenjie on January 10, 2013, 05:51

Dear sir, I have built a MTJ and the model has been optimized. However, when I calculated the MTJ in 0.1 bias, the log file shows that the device calculation cannot converge.

Could you tell me how to change the parameters in order to converge the calculation as well as save time??  Thank you very much.

Title: Re: The Device Calculation cannot converge~~
Post by: Anders Blom on January 12, 2013, 18:58

Always run the calculation at zero bias first - this is much easier to converge. Then you can use that result as a starting guess for the finite bias.