Hi everyone,

Also posted here. The subject says it all: Results from Stata's internal -irt 2PL- command don't replicate, depending on whether I run the same with Stata 16 MP on Linux vs with Stata 16.1 IC on a PC. Note how the data, version, commands, and seed are exactly the same.

With Stata 16 MP, on Linux:



with Stata 16.1 IC on a PC:



The same issue remains after also setting the sort seed, and sorting on a unique ID variable (with the stable option).

I'd very much appreciate any help,

Andy