I ran a real test case of the latest Xopt using the dev setup. The example is a dcgun tracked with GPT, optimizing the emittance out of the gun vs. the bunch charge. Generally, it looks like the example ran successfully in parallel at NERSC:
Investigating the population stats, I see that the first population has the wrong size (121 instead of 120):
I've attached the full working example.
dcgun_distgen.zip