Help with MCMC

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Laura Lee, modified 5 Years ago.

Help with MCMC

Youngling Posts: 95 Join Date: 3/31/16 Recent Posts

Hello all!

I am using SS version 3.24Y. I am trying to run the MCMC, but when I get to step 3 (running SS with the -mceval argument), the program crashes. I would appreciate any advice.

Thank you!

Cheers,

Laura

Richard Methot, modified 7 Years ago.

RE: Help with MCMC

Youngling Posts: 222 Join Date: 11/24/14 Recent Posts

Laura,

This will be hard to diagnose without more information. Perhaps instead we can post an example of what a successful mceval looks like.

Rick

Ian Taylor, modified 7 Years ago.

RE: Help with MCMC

Youngling Posts: 117 Join Date: 12/8/14 Recent Posts

Hi Laura,

In testing MCMC with a 3.24Y executable just now I also got an error in the -mceval step.

But then got the same error with other executables which I know worked for MCMC in the past and eventually tracked it down to a bad value in the starter file.

I had

0 # MCMC thinning interval

when that have should have a minimum of 1 (don't do any thinning on top of whatever was specified by -mcsave).

The error it produced looked like the following,

If you see 999, we got to the end of the control file successfully! 999 Making a copy of an unallocated dvector

Estimating...please wait...

And then nothing after.

Where It is supposed to look like

Estimating...please wait.. MG setup OK ... OK with obj_func 180.704 mceval counter: 2 mceval counter: 3 ...

Let me know if fixing MCMC thinning interval doesn't help.

-Ian