Author Topic: problem with left and right eigenvalues  (Read 6300 times)

quant

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problem with left and right eigenvalues
« on: June 29, 2011, 04:03:49 PM »
Hello all,

i am running a excited state geometry optimization with ricc2.  At 10th step, program stopped with the following error message.
Is these a way to solve this problem?

Thanks in advance,

PS. I am sending the last part of 10th step.
========= DIIS CC RESPONSE SOLVER =========

    threshold for convergence:0.10E-06
    max. nb. of DIIS vectors :     100
    maximum number of simultaneous jacoby matrix transformations:  1

    Iter  #Vectors  time (min)   residual
    --------------------------------------
      1       1         0.27     0.60E+00  (  1)    0.12E-31
      2       1         0.26     0.11E+00  (  1)    0.20E-30
      3       1         0.26     0.58E-01  (  1)    0.20E-30
      4       1         0.27     0.25E-01  (  1)    0.49E-31
      5       1         0.26     0.12E-01  (  1)    0.49E-31
      6       1         0.26     0.77E-02  (  1)    0.49E-31
      7       1         0.26     0.30E-02  (  1)    0.00E+00
      8       1         0.26     0.17E-02  (  1)    0.12E-31
      9       1         0.26     0.61E-03  (  1)    0.00E+00
     10       1         0.26     0.25E-03  (  1)    0.49E-31
     11       1         0.27     0.91E-04  (  1)    0.49E-31
     12       1         0.26     0.31E-04  (  1)    0.20E-30
     13       1         0.26     0.13E-04  (  1)    0.20E-30
     14       1         0.26     0.45E-05  (  1)    0.00E+00
     15       1         0.27     0.15E-05  (  1)    0.00E+00
     16       1         0.26     0.57E-06  (  1)    0.49E-31
     17       1         0.27     0.21E-06  (  1)    0.00E+00
     18       1         0.26     0.53E-07  (  1)    0.20E-30
    --------------------------------------
    converged in  18 iterations

   Total time          4.76 minutes


 ===========================================


Warning: one or more of the second eigenvectors do not give correct excitation energies:
 Largest difference between left and right eigenvalues is  0.76E-03 a.u. for state no.  1
 
 ========================
 
 
  internal module stack:
 ------------------------
    ricc2
 ========================
    cc_exci
  internal module stack:
 ========================
 ------------------------
    ricc2
    cc_exci
 ========================
 ========================
 ========================
  internal module stack:
  internal module stack:
 ------------------------
 ------------------------
    ricc2
    ricc2
    cc_exci
    cc_exci
 ========================
 ========================

 PROBLEM WITH LE/RE EIGENVALUES!
 ricc2 ended abnormally
error in gradient step (1)

Arnim

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Re: problem with left and right eigenvalues
« Reply #1 on: June 30, 2011, 10:17:50 AM »
Hi,

there might be something got mixed up with the restart files.
Maybe it helps to remove the CC* and restart.cc files before continuing with jobex.

Cheers,

Arnim