Hi Rahul,
HPC-X software is completely free to download and use, there is no licensing costs. This is part of the great benefit when choosing Mellanox; all of the supporting packages supporting our off-loading engines are included. By taking advantage of Mellanox and the offloading capabilities, your freeing up the CPU to do more meaningful computation on the applications, which in turn increases your overall efficiency. HPC-X does not include a job scheduler, but there are several open source schedulers to choose from and work well with HPC-X as the primary tool-stack.