Intel Paragon OSF/1 AD on the Paragon's compute processors. Oak Ridge National Laboratory operated a Paragon XP/S 150 MP, one of the largest Paragon systems, for several years. The prototype for the Intel Paragon was the Intel Delta, built by Intel with funding from DARPA and installed operationally at the California Institute of Technology in the late 1980s with funding from the National Science Foundation. The Delta was one of the few computers to sit significantly above the curve of Moore's Law. The computer boards was produced in two variants: the GP16 with 16 MB of memory and two CPUs, and the
Rule of 72 by 200/(200−"r") as follows: For example, if the interest rate is 18%, the rule of 69.3 says "t" = 3.85 years. The E-M rule multiplies this by 200/(200−18), giving a doubling time of 4.23 years, where the actual doubling time at this rate is 4.19 years. (The E-M rule thus gives a closer approximation than the rule of 72.) Note that the numerator here is simply 69.3 times 200. As long as the product stays constant, the factors can be modified arbitrarily. The E-M rule could thus be written also as in order to keep the product mostly unchanged. In