GEMS version 6.0 is significantly different from the previous versions in both the graphical interface and simulation engine. New GEMS version allows users to efficiently achieve the accurate results using a single PC or PC cluster. For example, using 2 regular computers, you can reduce the simulation time to half and solve the double size of problems without requiring any extra equipment. Using four regular computers, you can accelerate the simulation up to almost 4 times and solve four times larger problems with as less as 200€ network device investment. GEMS works well on both Windows and Linux platforms. GEMS supports online simulation, namely, you can simulate jobs from anywhere in the world as long as you have an internet connection.