System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04): Ubuntu 16.04
• Ray installed from (source or binary): xray from source
• Ray version: xray newest
• Python version: 3.6.5
• Exact command to reproduce:

Describe the problem

Can someone update the multi_gpu_optimizer file? xray deprecated gpu_fraction, but the for loop on line 47 makes it so that I can't set fractional GPU. while line 72 of agent.py says we can now set fractional gpu resources for the driver.

Source code / logs