This guide is intended for beginners' audiences so some simple explanations are needed. (In fact, the bio21hpc server does not have a graphic desktop at all) Both methods provide a way to share the graphic desktop accross the network, X2Go was chosen because it can deal with the lack of a graphic desktop on the server in the case of Bio21 HPC. Two methods are often mentioned as alternatives to X-forwarding, X2Go and Vnc. In this test, X2Go is estimated to work 3 to 5 times faster than X-forwarding. This guide outlines a new setup in which an alternative method is used in place of X-forwarding in and effort to make running graphic programs faster, focusing on the characteristics of Bio21 HPC system. X-forwarding is inefficient in that it needs to send a lot of information accross the network to an unknown display. from home, and particularly when VPN is needed. While this proven method works well within a fast local network, recent evidences show that it is very slow, almost to an unusable level, when used outside the network, ie. The traditional method of running programs with graphical output remotely has been using X-forwarding (-X option ) through ssh.
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