I built the same model one on Linux and one one MacOS using pystan. The MacOS model is about 2 MB and the Linux one is 55 MB. Are there any ideas why there is such a difference in model sizes?
Probably clang vs gcc issue.
What are the compiler versions?
On Linux, I am running gcc (Debian 4.9.2-10) 4.9.2.
On MacOS, I am running gcc (GCC) 4.8.5.
My guess is on Linux you are building with debug information included.
What are the Python versions?
2.7.14 on Linux and 3.6.1 on MacOS
Found the debug flag…thanks.