【优化参数】 opt=redundant 与 cartesian 的区别是什么? 对 gaussian 量化有影响: https://onlinelibrary.wiley.com/doi/pdf/10.1002/jcc.540120510 the set of internal coordinates chosen to carry out the optimization can have a significant effect on the rate of convergence ; this is especially true for cyclic systems where variables are likely to be highly coupled . 很全的 manual: http://www.lct.jussieu.fr/manuels/Gaussian03/g_ur/k_opt.htm Note: No partial optimization or freezing of variables can be done with purely Cartesian optimizations ,所以 freeze 的话,用默认的是可以的。 By default , Gaussian performs the optimization in redundant internal coordinates. This is a change from previous versions of the program (Gaussian98). There has been substantial controversy in recent years concerning the optimal coordinate system for optimizations. See references therein. This one is good. https://onlinelibrary.wiley.com/doi/epdf/10.1002/jcc.540120510 For minimizations, redundant internal coordinates provide substantial improvements in optimization efficiency over Cartesian and nonredundant internal coordinates, especially for flexible and polycyclic systems. C. Peng, P. Y. Ayala, H. B. Schlegel, M. J. Frisch, Using redundant internal coordinates to optimize geometries and transition states. J. Comp. Chem. 1996, 17, 49 - 56. or pdf 【优化算法】 Berny algorithm: http://www.pitt.edu/~jordan/chem3430/optimization.pdf The berny algorithm in G03 is similar to EF ( Eigenvalue following ) 基于 Hessian 矩阵的。
详见: http://www.wwpdb.org/documentation/file-format-content/format33/sect9.html 其中 ATOM 部分: gaussview 有时候处理 pdb 文件,有时候会有问题: https://www.researchgate.net/post/Why_some_pdb_files_are_not_accepted_by_GaussView But most of the atoms from a single molecule are accepted, only some of the atoms are not accepted. Should i do any modification in that particular atom.. Yes! For example, “Zn” should begin with 13 and written as Zn instead of ZN.
1. Error : New curvilinear step failed. 解决办法: Try to restart optimization from a slightly different input geometry. http://blog.sina.com.cn/s/blog_8be57be70100xabz.html 2. Terminating because of bad ONIOM partitioning 一般是原子坐标后面多了内容。 3. opt过程中, Bend failed for angle错误。 原因是出现了180度角。 http://muchong.com/html/201405/7393235.html 解决办法,将优化结果 重新做成gjf, 继续优化 。
from http://blog.sina.com.cn/s/blog_8be57be70100xabz.html Gaussian calculations can fail with various error messages. Some error messages from .out and .log files - and possible solutions - have been compiled here to facilitate problem solving. These are divided into: Syntax and similar errors Memory and similar errors a title="Convergence problems: " href="file:///E:/°¤¹/Trouble%20shooting%20Gaussian%20calculations%20%20Norwegian%20High%20Performance%20Computing.htm#convergence-problems" Convergence problems a title="Errors in solvent calculations: " href="file:///E:/°¤¹/Trouble%20shooting%20Gaussian%20calculations%20%20Norwegian%20High%20Performance%20Computing.htm#errors-in-solvent-calculations" Errors in solvent calculations a title="ERROR MESSAGES IN LOGFILES " href="file:///E:/°¤¹/Trouble%20shooting%20Gaussian%20calculations%20%20Norwegian%20High%20Performance%20Computing.htm#error-messages-in-logfiles" Errors in log files ERROR MESSAGES IN OUTPUT FILES Syntax and similar errors:End of file in ZSymb. Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l101.exe Solution: The blank line after the coordinate section in the .inp file is missing. Unrecognized layer "X". Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l101.exe Solution: Error due to syntax error(s) in coordinate section (check carefully). If error is "^M", it is caused by DOS end-of-line characters (e.g. if coordinates were written under Windows). Remove ^M from line ends using e.g. emacs . To process .inp files from command line, use sed -i 's/^M//' File.inp (Important: command does not work if ^ M is written as characters - generate ^M on command line using ctrl-V ctrl-M ). QPERR --- A SYNTAX ERROR WAS DETECTED IN THE INPUT LINE. Solution: Check .inp carefully for syntax errors in keywords RdChkP: Unable to locate IRWF=0 Number= 522. Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l401.exe or FileIO operation on non-existent file. Error termination in NtrErr: NtrErr Called from FileIO. Solution: Operation on .chk file was specified (e.g. geom=check, opt=restart), but .chk was not found. Check that: %chk= was specifed in .inp .chk has the same name as .inp .chk is in the same directory as .inp run script transports .chk to temporary folder upon job start. Run scripts downloaded here should do this. The combination of multiplicity N and M electrons is impossible. Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l301.exe Solution: Either the charge or the multiplicity of the molecule was not specified correctly in .inp. Memory and similar errors:Out-of-memory error in routine RdGeom-1 (IEnd= 1200001 MxCore= 2500) Use %mem=N MW to provide the minimum amount of memory required to complete this step Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l101.exe or Not enough memory to run CalDSu, short by 1000000 words. Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l401.exe or allocation failure: Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l1502.exe Solution: Specify more memory in .inp ( %mem =Nmb). Possibly, also increase pvmem value in run script. Especially solvent calculations can exhibit allocation failures and explicit amounts of memory should be specified. galloc: could not allocate memory. Solution: The %mem value in .inp is higher than pvmem value in run script. Increase pvmem or decrease %mem . Probably out of disk space. Write error in NtrExt1 Solution: /scratch space is most likely full. Delete old files in temporary folder. Convergence problems:Density matrix is not changing but DIIS error= 1.32D-06 CofLast= 1.18D-02. The SCF is confused. Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/linda-exe/l502.exel Solution: Problem with DIIS. Turn it off completely, e.g. using SCF =qc, or partly by using SCF =(maxconventionalcycles=N,xqc), where N is the number of steps DIIS should be used (see SCF keyword ). Convergence criterion not met. SCF Done: E(RHF) = NNNNNNN A.U. after 129 cycles Convergence failure -- run terminated. Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/linda-exe/l502.exe Solution: One SCF cycle has a default of maximum 128 steps, and this was exceeded without convergence achieved. Possible solution: In the route section of input file, specify SCF=(MaxCycle=N), where N is the number of steps per SCF cycles. Alternatively, turn of DIIS (e.g. by SCF=qc) (see SCF keyword ). Problem with the distance matrix. Error termination via Lnk1e in /pkg/gaussian/g03/l202.exe Solution: Try to restart optimization from a different input geometry. New curvilinear step not converged. Error imposing constraints Error termination via Lnk1e in /pkg/gaussian/g03/l103.exe Solution: Problem with constrained coordinates (e.g. in OPT=modredun calculation). Try to restart optimization from a slightly different input geometry. Optimization stopped. -- Number of steps exceeded, NStep= N Error termination request processed by link 9999. Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l9999.exe Solution: Maximum number of optimization steps is twice the number of variables to be optimized. Try increasing the value by specifying OPT=( MaxCycle =N) in .inp file, where N is the number of optimization steps (see OPT keyword ). Alternatively, try to start optimization from different geometry. Errors in solvent calculations:AdVTs1: ISph= 2543 is engulfed by JSph= 2544 but Ae( 2543) is not yet zero! Error termination via Lnk1e in /global/apps/gaussian/g03.e01/g03/l301.exe Solution: Problem is related to building of the cavity in solvent calculations. One possible solution is to change the cavity model (default in g03 is UAO, can be changed by adding RADII keyword in section below coordinates in the .inp file, e.g. RADII=UFF, see SCRF keyword ). Hydrogen X has 2 bounds. Keep it explicit at all point on the potential energy surface to get meaningful results. Solution: In UAO cavity model, spheres are placed on groups of atoms, with hydrogens assigned to the heavy atom, they are bound to. If assignment fails (e.g. because heavy atom-H bond is elongated), cavity building fails. Possible solutions: a) use cavity model that also assigns spheres to hydrogens (e.g. RADII=UFF) or b) Assign a sphere explicity on problematic H atom (use SPHEREONH= N, see SCRF keyword ) ERROR MESSAGES IN LOGFILES= PBS: job killed: walltime N exceeded limit M signal number 15 received. Solution: Job did not finish within specified wall time. Retrieve .out and .chk files from temporary folder /global/work/$USER/$JOB (or $PBS_JOBID) and restart calculation if possible (using e.g. opt =restart or scf =restart). cp: cannot stat $JOB.inp: No such file or directory Solution: The .inp file is not in the directory from where the job was submitted (or its name was misspelled during submission. If error reads: cp: cannot stat $JOB. inp.inp , the .inp file was submitted with extension). ntsnet: unable to schedule the minimum N workers Solution: The value of %NprocLinda=N in the .inp file is higher than the number of nodes asked for during submission. Make sure these values match. Connection refused died without ever signing in Sign in timed out after 0 worker connections. Did not reach minimum (N), shutting down Solution: Error appears if you run parallel calculations but did not add this file to your $HOME directory: .tsnet.config containing only the line: Tsnet.Node.lindarsharg: ssh