Memory error when running stan

General
1

Hi,

I have performed some Stan modeling using Windows and Rstan. The code could work before and but recently I found some error like:

Error: cannot allocate vector of size 944 Kb

It seems that it’s memory allocatin error and the code has not changed while the data size has increased a little bit (like from 25000 observations changing to 27000 observations). My computer have 32 GB memory but specifying

memory.limit(size = 30000)

will not work. Not sure what’s going on and any advice?

Thx!

2

Does this occur while the model is sampling, or while you are doing post-sampling operations on the fitted rstan object?

3

Hi,

This occured during the model is sampling and thus there is no rstan object outputed.

4

Can pull up Task manager and watch the RAM usage of the model exe while it is sampling?

5

It seems to be a good idea but the model takes hours to run, any idea to automatically monitor the RAM usage?

Thx!

6

Maybe try perfmon? I don’t think that article shows it, but you can make it process-specific.

7

Thanks so much!