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| ====== IDL on Physics linux systems ====== | ====== IDL on Physics linux systems ====== | ||
| - | Online help in IDL 7.0 may not work properly without taking special steps. | + | IDL is supported on the linux cluster primarily for specific research groups in Astronomy and Cosmology. A few licenses are also provided by Physics and Astronomy for general use. |
| - | IDL's release notes have this to say about the fix to their help system: | + | To use IDL, you first need to load the software module: |
| + | module load idl | ||
| + | |||
| + | After that, for a command line interface, type | ||
| + | idl | ||
| - | If you use the IDL Workbench, simply starting the Workbench | + | or for IDL's development environment, type |
| - | | + | |
| - | idlde | + | For interactive help, type |
| + | idlhelp | ||
| - | command causes | + | ===== The IDL Astronomy User's Library ===== |
| - | XULRunner. If you use IDL in command-line mode (without starting | + | |
| - | the IDL Workbench), you must start the IDL help server before | + | |
| - | starting IDL in order for the ? command to work properly. | + | |
| - | To do this, enter the following commands at the shell prompt: | + | |
| - | idlhelp | + | < |
| - | idl | + | |
| - | Note that the IDL help server continues to run after you have | + | The IDL Astronomy Users Library is a central repository for low-level astronomy software written in the commercial language |
| - | ended your IDL session. If you prefer to shut down the IDL help | + | |
| - | server, enter the following command | + | |
| - | idlhelp -command shutdown | + | In order to use the network copy of this software, you must modify the IDL_PATH environment path. |
| - | Depending on your system, it may take several moments for the | + | For csh: |
| - | | + | |
| - | the response time of the ? command significantly. | + | |
| + | for bash: | ||
| + | export IDL_PATH="< | ||
| + | |||
| + | ===== Running multiple copies of IDL on the same machine ===== | ||
| + | |||
| + | This hint was taken from Princeton Astronomy department: IDL hands out licenses based on hostname+username+display. If all three of those are equal, you can start as many sessions as you want and only consume one license. The modern habit of letting ssh create X tunnels causes the display name to be different for each ssh connection, even if several connections come from a single host. There are several ways of making your DISPLAY name the same for all such connections. The simplest is to note which your first one is (echo $DISPLAY), and set DISPLAY on other connections to that. Or for a console-only IDL session, simply unset DISPLAY completely. | ||
| + | |||
| + | ===== Running IDL jobs without license restrictions ===== | ||
| + | |||
| + | The IDL Virtual Machine which lets you run an IDL " | ||
| + | |||
| + | This can also help you run multiple IDL jobs in parallel through **condor** without being encumbered by available licenses. See http:// | ||
| + | |||
| + | ===== Problems and workarounds ===== | ||
| + | |||
| + | none at present | ||