Dear all,
I think I find the problem, it's the different between g_rdf and the 
csg_stat, after reading several threads, I think it will converge. When I 
get the new data, I will update this thread. Thank you!
Best,
Zidan

On Sunday, May 8, 2016 at 7:12:42 PM UTC+2, Zidan Zhang wrote:
>
> Dear Denis,
> Thank you for the reply, I have deleted the xtc file as listed in 
> <cleanlist> section, I will re-run the last iteration to check RMSD.
> Sincerely,
> Zidan
>
> On Sunday, May 8, 2016 at 7:03:32 PM UTC+2, Denis Andrienko wrote:
>>
>> Hi,
>>
>> IBI requires canonical sampling of the coarse-grained radial distribution 
>> function. 
>> Can you check if your system is still in a liquid state (i.e. not in a 
>> glassy one)? You can do it by calculating RMSD of last iterations and 
>> checking if a molecule diffused more than its own size. If not, you might 
>> want to increase the runtime of every IBI step. 
>>
>> In some exotic cases you just have to do more IBI steps.
>>
>> Best,
>> Denis
>>
>> On Sunday, May 8, 2016 at 3:53:32 PM UTC+2, Zidan Zhang wrote:
>>>
>>> Dear all,
>>> When optimise the nonbonded interactions, some of them don't converge, 
>>> like shown in the picture. The system is a bulk system and has no crystal.
>>> I have tried several solutions:
>>> 1. change the scale factor (1.0, 0.7, 0.5);
>>> 2. change the initial guess by using high temperature (default 458 K, 
>>> high T=600 K) in the setting.xml (nonbonded.xml as attached);
>>> 3. the order of optimisation.
>>> All of them have the same results.
>>> How can I solve this problem?
>>> Best regards,
>>> Zidan
>>>
>>>
>>>
>>> <https://lh3.googleusercontent.com/-eOfyHp6X1bg/Vy9Cx2MzKVI/AAAAAAAAANA/wuLn1LkrZOki0EIe1Gj2KyekymfeQmrjACLcB/s1600/rb-rb.png>
>>>
>>>
>>>
>>>

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