Hi Blake,
You can specify how many particles you want to run in the settings.xml file. Running more particles will result in better statistics (i.e., lower standard deviation). The run time should scale directly proportional to the number of particles, so if you increase the number of particles by a factor of 10, your simulation should run 10 times longer. For a k-eigenvalue problem, particles are grouped into batches, so you can also change the number of batches. I’d recommend reading the section in our user’s manual on simulation settings and particular the number of particles.
Best regards,
Paul