If you try to run a single Javascript test with resmoke.py using a combination of the --repeat=N flag and the -j=M flag, it will still run the test sequentially. e.g.

python buildscripts/resmoke.py --repeat=100 -j10 sometest.js

Ideally it could parallelize repeated execution of a single test. For example, if --repeat=100 and -j=10, it would run 10 instances of the test in parallel, that would each execute 10 times.

This could be very helpful for quickly trying to reproduce a particular test failure locally.