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Usage Instructions Print E-mail
Written by Administrator   
Sunday, 31 January 2010 11:50
The NanoICT computational HUB contains a number of codes that can be used through a convenient web-based interface. Under the "Available codes" menu item it is possible to have an overview of what is currently available, along with a brief description.
In order to actually run the codes one has to be logged in (a simple registration procedure is available to obtain a user account,
just click on "Registration") and enter the "Run tools" environment. Here the user will be presented with the list of the currently available codes. In order to select a specific code it is sufficient to click on its name.

Each user has a maximum allocated disk space, and, once this gets completely filled up, it is not possible to run any new codes.
In such a case a message "User quota excedeed" appears and one has to click on the link "Previous runs" at the top of the page, in orderto obtain a list of the results from previous activity; it is then possible to choose which runs have to be deleted.

Once a tool is selected, it is possible to read the associated tutorial, if available, with a direct link to it or, in some cases, with
the "more" link. By clicking on the "Run tool" button, the user is presented with a list of the input files used by the code, and, in
some cases, of multiple examples of input files. The files actually corresponding to the program input are specified in the tutorial. The user can edit them or can remove them and upload new files. A rename option is not yet available, therefore to use alternative  input files that are already available it is necessary to download the file to the local user computer (by clicking on the file name), and then to upload it back to the server into the proper file with the "Add another file" button.

Once the input files are ready, the simulation can be started by clicking on the "Run tool" button: depending on the time the execution is going to take, a "Running tool..." message will be displayed at the bottom of the page or, in the case of tools requiring a longer time to run, a "running" message will appear at the top of the page, along with an "abort" and a "refresh run tool status" button. By clicking on the "abort" button it is possible to halt the execution of the code, while with the "refresh run tool status" button it is possible to check whether the execution has been completed

Once the code execution is complete, a list of the output data files will be presented. By clicking on the "plot/view" button, the user will be presented with a window containing the gnuplot instructions to produce a plot of the corresponding data, if they are plottable data, otherwise a window will open, showing the content of the file. In the first case it is possible to obtain a plot by
clicking on "plot result" or to just see the content of the file with the "View/edit result" button. If the user is familiar with the gnuplot syntax, he/she can edit the plot commands before producing the actual plot. Output data can be trasferred to the local computer by clicking on the name of the file.

To perform a new run it is necessary to go back through the "Run tools" menu option on the left and select again the tool of interest. All input files will be reset to the default values. If, instead, one wants to run the tool again with the same parameters of the previous run or with slightly modified parameters, it is sufficient to click on the "Previous runs" option at the top of the page and select the run for which we want to edit the input files.