[llvm] "./a.out: Permission denied" error for runtime observations in Google Colaboratory

[ChrisCummins]

🐛 Bug

I'm not sure if this is a security feature of colab (preventing execution of arbitrary binaries) or a problem that we can fix in CompilerGym.

To Reproduce

import compiler_gym
env = compiler_gym.make("llvm-v0")
env.reset()
env.observation.Runtime()

Demo notebook.

Environment

Please fill in this checklist:

• CompilerGym: v0.2.0
• How you installed CompilerGym (conda, pip, source): pip

[ChrisCummins]

I was able to reproduce a similar issue in a docker container, and it turned out the problem was that executables in /dev/shm are not executable. It would be worth setting a different transient cache and seeing if the problem still holds in colab.

Cheers,
Chris