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GLOBE Claritas runs under various kinds of Unix operating system. It does not run under WindowsNT. The various Unixes that are supported include Sun/Solaris, Compaq/Tru64, IBM/AIX and Linux. Most of our Linux users use the RedHat distribution. The hardware you decide to run Claritas on depends more on the size of your seismic datasets than on the software. A bare minimum hardware configuration would be a Pentium chip with 64M of RAM and a few Gbytes of disk storage. A good hardware platform for 2D processing or small 3D surveys would be a fast Pentium 4 chip with 512M or 1G of RAM, and at least 15-20 Gbyte of disk space. These specifications are now available in laptop configurations. Multi-screen displays are supported by Claritas -if the hardware supports them you can have up to four screens at a time. For larger 3-D surveys you might want to run either a network of fast Pentium PCs, or use Compaq Alpha workstations. For larger datasets, the more RAM you can add the better. A few processing modules large memory requirements, and 2Gb RAM or more would be recommended. If working on a non-Unix computer (eg a PC running windows), you can access Claritas over a network by running an X-window emulator (such as XWIN-32) on your desktop PC. A Unix CPU will still be required to run Claritas. For seismic raster output, we strongly recommend the HP DesignJet range of plotters. We find them to be reliable, and the Claritas raster files are written out in the Hewlett-Packard raster format (HP-RTL) ready for direct spooling to colour or b/w plotters. Claritas includes filters to convert HP-RTL to some other common raster formats such as TIFF and Versatec. Claritas hardcopy plotting does NOT require any extra CGM file software. Very little extra software is required to run Claritas. You will need to have X-windows and a Fortran compiler. X-windows is provided with all Unix installations anyway, and most Linux distributions come complete with the GNU Fortran and C compilers, although you may need to request their installation when you install Linux. For Solaris, Tru64 or AIX Claritas installations you will require the Sun, Compaq or IBM Fortran compilers to be installed. Next: Licensing>>
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