how to cause linux system datetime to run faster than real world datetime?
Solution 1:
If you are willing to spend more time getting this to work you can always use virtualization and get guest system clock to run faster.
Here http://sysnet.ucsd.edu/projects/time-dilation/ you can find patches for xen that allow you to slow the guest system down (the opposite of what you want to achieve), so some modifications might be required.
Solution 2:
Write a shell script that sets the system time and then waits for the results of the next job, then sets the system time again and waits for the results of the next job... Repeat until done.