I have a few very simple AFLs to optimize. Those all have vast number of potential combinations of the parameters to optimize.
My PC has one CPU that can run 8 threads at a time.
When I start optimization of one AFL then all 8 threads combined use only up to 20% of the CPU.
In order to utilize the CPU more - I opened another APX+AFL in separate tab and started optimization in the second tab as well.
Now the CPU is still used only up to 25%.
First APX time estimate for optimization, increased from 3:20 to 4:10.
Second APX of similar complexity as compared to the first AFL - shows 4 hours estimate to optimize.
So optimizing multiple systems in parallel does not seem to help in better utilizing the CPU.
What else can I do to ensure more efficient use of the CPU?
Note: RAM is only 59% in use.