All Stan processes finished, but it is still working

[Peshkin]

fit.check
returns
"All Stan processes finished."

fit.stop
returns
Stan is already finished.

but
fit.peek
gives
"Stan is still working. You can either:

1. Use the peek method to get partial samples
2. Come back later, or
3. Attach a listener to the StanFit object."

how is that possible ?

[brian-lau]

Ah, the peek method is quite untested. I suspect the message is incorrect. I imagine you actually have the correct number of samples in your StanFit output?

[Peshkin]

I can't tell because when I run
sim = extract(fit);
it tells me the Stan is still working

[Peshkin]

Even if I just type
fit
I get the same message

[mdnunez]

I have the same problem after 1 chain crashed early (possibly due to memory issues) but the other two chains finished.