What was the shoot like?
JM: It took two days. We had to be there by 6 a.m. and we finished around 6 p.m. It was done in the auditorium of beautiful Aga Khan Museum, here in Toronto.
Professors Javad Mostaghimi and Mark Kortschot are both visible in the movie’s trailer
Source: U of T Engineering professors appear in Downsizing film – U of T Engineering News