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Mplus Discussion > Confirmatory Factor Analysis >
 Bob Krueger posted on Friday, January 23, 2009 - 2:49 pm
My colleagues and I are running into system requirement issues with ML estimation. We are thinking of investing in a new computer, but it's hard to predict what we might encounter down the road. So my question is: what are the specs of the machine(s) you use to test out more memory-and-time-intensive models? What would you recommend as an optimal set up for reasonable but computationally intensive scenarios? any help or advice would be appreciated!
 Bengt O. Muthen posted on Friday, January 23, 2009 - 6:18 pm
I use "Computer 3" mentioned in the Version 4.2 timing information that you see under Version History. So 4 processors (32-bit). But things have improved since then and several Mplus users have 8-processor computers (particularly useful for complex mixture modeling with many random starts), some from well-known companies and some built for them from lesser known companies. And 64-bit allows more RAM to be accessed and is a little faster than a comparable 32-bit. We don't like to recommend beyond these general comments. See also our web site under System Requirements.
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