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Parallel processing for Ritz-vector analysis

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Answer: Unlike Eigen vectors, Ritz vectors do not always produce the same modes. For example, with sets of 200 and 500 Eigen vectors, the first 200 of each set will be the same. However, with sets of 200 and 500 Ritz vectors, none may be the same, though lower modes tend to converge as the number of modes increases.


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Related Incidents:

  • Incident 20000: See action request "cumulative mass participating ratios for Ritz Vector modal analysis" from 3/29/2010.