There are a number of PC's running Linux (a free UNIX) in the physics computation lab in 304 E. Bridge (affectionately known as Wonderland ). It is usually possible to find a free console there. To get a Wonderland account, you need to give an account form to Glenn Bach.
Maple Version
The maple version of GRTensorII is available both in Wonderland and on the CCO unix servers. At the CCO (but not in Wonderland) you first need to prepare to use Maple V release 3 by typing 'setup maple.r3' ('setup maple' will setup Maple V release 5, which does not seem to work with GRTensor II). This is a good command to put in your CCO .login file along with the other setup commands.
Next you need to tell Maple where to find GRTensor II by copying the sample initialization files to your own directory. In Wonderland these files can be found in /home/users/Misc/ph236, and on the CCO they are in /ccovol/maple.r3/grii/initfiles (the maple.r3 directory may not exist, but it will nonetheless magically appear if you try to cd to it--close your eyes and use the force, Luke).
Copy the file mapleinit into ~/.mapleinit (.mapleinit in your home directory), or copy the relevant lines into your existing .mapleinit). Copy grtensor.ini into whatever directory you intend to start Maple from. You can customize both files as you wish; You are now ready to start Maple by typing 'maple' to invoke the command-line version or 'xmaple' to start the X-Windows notebook version. The sample .mapleinit file starts up GRTensor II automatically--if you don't like that behavior, you can remove those two lines and type them in by hand when you want to use it.
A copy of GRTensor manual has been placed in Wonderland.
Mathematica Version
The Mathematica Version is available only in Wonderland. Simply invoke Mathematica and then type <<"grii/grt.m" to start the package.
An online documentation is available in http://www.astro.queensu.ca/~lake/webmma/new/grtmdoc/frame.html
Return to the Ph236 homepage.