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baiyang1200

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[ÇóÖú] CCSD(T)¼ÆËãCPÄÜÁ¿Ð£Õý£¬L913´íÎó£¨ÒÑÉèmaxcycle=512£©ÈçºÎ½â¾ö£¿ ÒÑÓÐ1È˲ÎÓë

ÓÃCCSD(T)¼ÆËãCPÄÜÁ¿Ð£Õý£¬CCSD(T)(maxcycle=512)£¬¿ÉÊÇÈÔÈ»ÔÚL913³ö´íÖжϣ¬³ö´íÐÅÏ¢ÈçÏ£º
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*MAX. CYCLES*
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Largest amplitude= 2.55D-02
Error termination via Lnk1e in /public1/soft/Gauss09/g09/l913.exe at Sun May 22 21:11:34 2011.

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lqzdonald

ľ³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

This is a failure of the CCSD(T) to converge. You have already
done the first most obvious thing, adding more CCSD iterations. In
general if it is not converged in 100 I would not try to go more than
about 150 just because beyond this you risk the possiblity of numerical
problems.
One of the features of a counterpoise calculation which makes it
more challenging than a standard calculation is the inclusion of non-atom
centered functions in the calculation. This makes accurate evaluation
integrals more difficult.
One thing to try is a new feature we added with G09 is the ability
to improve the accuracy of two electron integrals with a single keyword,
Int=Acc2E=n. Default is n=10, I would recommend trying n=12 and see
if that gets you convergence.
7Â¥2014-02-14 07:44:07
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 8 ¸ö»Ø´ð

fichte

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gmy1990(½ð±Ò+1): ·Ç³£¸ÐлÄã¶ÔÂÛ̳µÄ¹±Ï×£¬½±ÀøÒ»Ï£¡ 2011-05-23 12:27:00
molpro¶ÔCCSDÊÕÁ²µÄ¿ØÖƶàһЩ£¬²»¹ýCCSDÊÕÁ²À§ÄÑ¿ÉÄÜÊÇÌåϵ×ÔÉí¶à²Î¿¼Ì¬µÄÌØÕ÷µ¼Öµġ£Ò²Ðí¿ÉÒÔ¼ì²éÒ»ÏÂspin contamination»òÕßMCSCFµÄ×ÔÈ»¹ìµÀÕ¼¾ÝÊý
Tellmethestoryofyoursoul.Lookatmewithoutturningyoureyesaway.YouthinkthatIamnon-existent.
2Â¥2011-05-23 11:12:23
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lion0528

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
1Â¥: Originally posted by baiyang1200 at 2011-05-23 09:37:13:
ÓÃCCSD(T)¼ÆËãCPÄÜÁ¿Ð£Õý£¬CCSD(T)(maxcycle=512)£¬¿ÉÊÇÈÔÈ»ÔÚL913³ö´íÖжϣ¬³ö´íÐÅÏ¢ÈçÏ£º
*************
*MAX. CYCLES*
*************
Largest amplitude= 2.55D-02
Error termination via Lnk1e in ...

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3Â¥2012-02-27 09:52:58
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lipeng87

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