OpenMx 2.0 Discussion

Hi, all.

I am fitting a three-level meta-analysis. The model handles missing values in the predictors with FIML. It worked fine in OpenMx_1.4-3532 (see the files of test5a).

It gave an error in OpenMx_2.0.0-3578 (see the files of test5b):
Error in runHelper(model, frontendStart, intervals, silent, suppressWarnings, :
BLAS/LAPACK routine 'OMXUNS' gave error code -8
Calls: mxRun -> runHelper -> .Call
Execution halted

Any suggestions are welcome. Thanks in advance.

Mike

Hi, all.

I have some issues with the CIs in OpenMx_1.4-3532 and OpenMx_2.0.0-3575. I am fitting a random-effects meta-analysis with two effect sizes. My model was generated from the metaSEM package (metaSEM.model in the attached file). Another version was specified directly in OpenMx (mymodel in the attached file). This model worked fine. It was only used for comparisons. Both versions were supposed to be equivalent. The loglikelihoods and the parameter estimates were the same, while there were some issues on the CIs.

Thanks. It is another milestone!

Unfortunately, it broke my metaSEM package. I am trying to fix it. I am testing a random-effects meta-analysis model. This model is equivalent to the one in the sources /openmx/models/passing/RAM-FIML-defvars.R There are only two parameters---one mean and one variance. The models are specified in OpenMx and in metaSEM that generates the code for OpenMx. The R syntax, outputs, and R objects are test2.0.R, “test2.0 output.txt”, and test2.0.txt, respectively.

This thread is intended as a list of known issues with OpenMx 2.0 while it is in beta.

There are two known issues with the first beta, as of its public launch on 5/30/14:

• This beta does not presently have an updated log of changes, so experienced users won't yet be able to get a quick summary of "what's different" by looking at the release notes (such as appear in Chapter 5 of the User Guide).