The World's First Petaflop SuperComputer

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Japan has achieved a significant milestone by creating the world's first petaflop supercomputer, boasting a performance of over 4.1 PFLOPS. While it is not yet officially recognized as the fastest supercomputer, it is anticipated to rank highly in the upcoming list of the fastest 500 supercomputers. This development highlights advancements in computational power, enabling complex calculations such as finding the largest prime number. The supercomputer's capabilities reflect the ongoing evolution of technology and the increasing demands for processing speed in various applications.

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  • #31
jimmysnyder said:
The largest prime is a function of time. Setting the current time to t_0, we get \epsilon(t_0) = 2^{43112609} - 1, where \epsilon > 0 is the largest prime. Now apply A. Einstein's speed limit of 300 km/s to get a upper limit for the current time (which is no longer what the current time was when I began this post), in terms of the current space. We find that for each \epsilon, there is a \delta > 0 such that |f(x) - f(y)| < \epsilon. (See Introduction to Elementary Quantum Field Theory for Poets, by Gumm, page 486257). Now we use the standard mathematician's subterfuge of allowing zero to approach \delta from behind. This sneak attack will insure that \delta is circumspect while we let \epsilon \rightarrow 0. Thus the largest prime is zero.

Fortunately the adoption of the "one,two,many,lots" counting system allows to simply state that the largest prime has the value "lots" - in fact all primes except "many" have the value "lots"
 
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  • #32
mgb_phys said:
The switching time is more a question of the capacitance of the junction which fortunately drops with feature size. Even desktop PCs now have <45nm features.

MosFets are more widely used, aren't they? There must be a rough way to characterize delay time with feature size. Something like t = f(RC+t_drift), using lumped values. What to do with power disipation--hold it constant with die area? And is there a lower bound on bias voltage for mosfets? It hadn't occurred to me to ask if there were a lower limit on flipping channel. Deposition thinkness would effect both R and C. Has it remained fairly constant as of late?
 
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