[CP2K-user] [CP2K:18163] Question about testing the cutoff
Dragoon
longdragoonae at gmail.com
Thu Dec 8 19:52:41 UTC 2022
I didn't use smoothers for density/XC when testing the cutoffs. (input
template attached)
But by the way, can I just add the smoothers for the cutoff without
smoothers?
Thank you so much!
Zhuoran
在2022年12月8日星期四 UTC-5 10:29:37<Lucas Lodeiro> 写道:
> are you using smoothers for density nad/or XC?
>
> El jue, 8 dic 2022 a las 1:04, Dragoon (<longdr... at gmail.com>) escribió:
>
>> Hi,
>>
>> I'm trying to setup an AIMD simulation of Mn2+ & 69 water. I uses the
>> PBE functional with the DZVP-MOLOPT-SR-GTH basis set and GTH
>> pseudopotential. I ran the cutoff test following the HOWTO tutorial on the
>> CP2K website. Yet the results seem to have problems converging to 10E-6 Ha
>> even till high cutoffs (with REL_CUTOFF=60).
>>
>> I'd like to know if I should be satisfied with the 1200 cutoff, or it is
>> too high for practical MD runs, or I need to go even higher. Any help is
>> appraciated.
>>
>> Thank you,
>> Zhuoran
>>
>> Cutoff (Ry) | Total Energy (Ha) | NG on grid 1 | NG on grid 2 | NG on
>> grid 3 | NG on grid 4 | NG on grid 5
>> 400.00 -1277.6325420078 202343 100464 123990 82893 60
>> 500.00 -1277.6308744433 169404 101502 154066 84558 220
>> 600.00 -1277.6307319094 150400 95615 123897 139618 220
>> 700.00 -1277.6309938928 145618 92190 116280 155442 220
>> 800.00 -1277.6309476620 121932 101148 118245 119901 48524
>> 900.00 -1277.6308976750 114245 96440 128844 120030 50191
>> 1000.00 -1277.6309315617 105579 101216 110895 140582 51478
>> 1200.00 -1277.6309197458 97971 104372 100464 123990 82953
>> 1400.00 -1277.6309187324 93871 97967 109256 123878 84778
>> 1600.00 -1277.6309191610 83296 72843 105770 109481 138360
>> 1800.00 -1277.6309163143 75269 75131 95615 123897 139838
>> 2000.00 -1277.6309162673 23907 121811 95679 113990 154363
>>
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