However, not all research projects or High Performance Computing (HPC) centers have the resources necessary to provide scientific gateways. Scientific gateways (such as the TeraGrid Portal ) are one possible solution to this problem. Installing, configuring and running this software is generally a multi-step process that can be overly confusing to novice users and presents a barrier to entry, particularly in research domains not traditionally associated with advanced computation. Even when applications provide a Graphical User Interface (GUI), special software (such as an X11 server) may be required to use the interface. For instance, the user may need to install multiple software tools just to connect with advanced hardware, and successfully installing and navigating this software frequently requires the use of Command Line Interfaces (CLI) that are unfamiliar to novice users. However, novice users of cyber-infrastructure are often overwhelmed by the complexities of using cyber-infrastructure. An increasing number of turnkey, domain specific software packages are available to help users take advantage of advanced cyber-infrastructure and resources such as TeraGrid.
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