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Technology Stocks : Silicon Graphics, Inc. (SGI)

SGI 90.15

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Dec 9 3:59 PM EST

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To: Jeff Maresh who wrote (409)	11/23/1996 1:53:00 PM
From: Michael Madden	of 14451

I find your comments very curious. Here is my experience with regard to NT vs. UNIX in the two major areas you mention. Administration I am a programmer in a Unix development shop. We have 10 SGI computers, 30 Linux PC Workstations, and 5 SCO PC Workstations. We have one administrator for all these computers and that isn't his full-time job. I have worked with WindowsNT enough to say that it its administration is much easier to learn, and I like its administration tools better than many of its UNIX competitors. However, WindowsNT is also a less capable and flexible system than many UNIX OS's. In my experience, a well-trained UNIX administrator can support the same number of computers as a well-trained WindowsNT administrator. The real difference is that a UNIX administrator requires more training and typically demands more salary than an WindowsNT administrator. Real-Time Simulation WindowsNT is a poor real-time architecture. It is very capable at doing "soft" real-time; the typical soft real-time application is transaction-processing. However, WindowsNT and the PC architecture lack all of the features and performance to do hard real-time except for trivial applications. My development group produces flight simulations for NASA. Our current production system is a Convex C38 series mainframe. On this computer, we can run four simultaneous real-time research experiments WHILE other development is occuring. We just recently demonstrated running a real-time simulation on an SGI Onyx. SGI will be our next generation simulation platform. It has the right combination of CPU power, scalability, and third-party software support. (Plus, we also have a large number of them for doing real-time graphics). We are also developing a PC-based simulation that researchers can run on their desktops. We looked at both WindowsNT and Linux as the underlying OS. And we chose Linux. WindowsNT process management simply does not support hard real-time as well as Linux does.

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