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User: jkleint

jkleint's activity in the archive.

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  1. Better Implementation on Fun with Prime Numbers · · Score: 3, Interesting

    As mentioned, DJB's primegen is much faster. Even his Sieve of Eratosthenes implementation will do the primes up to a billion in 1.38 seconds on a 2.4 GHz P4, which is roughly 100x faster than this guy's "all primes below 100 million in less than 13 seconds" (although he doesn't specify on what machine). There's no reason to be using huge memory "pages," you can sieve up to N with any size interval you want (like say, the size of your L1 d-cache) using only Sqrt(N) memory for the primes up to Sqrt(N).

  2. Re:Latency on 2gbps Wireless Network Rollout this Summer · · Score: 1

    Actually, the latency of 1xEV is pretty good. You can get less than 80 ms to the gateway, and 150 ms to "close" sites. Check out http://www.arstechnica.com/reviews/02q2/qualcomm/1 xEV-1.html

  3. Hands-on Review on EvDO High-Speed Wireless vs. 802.11 · · Score: 1
  4. Hardware Upgrades? on Questions for a Lecture on Microsoft's Palladium? · · Score: 1

    How will I get my cryptographic keys out of my old computer and into a new one securely? Will I be able to do this myself, without an Internet connection? If not, who will handle key escrow, and how can I trust them? Wouldn't key transfer be a weak link in the chain? Wouldn't this effectively require me to register all new computer purchases with a central registrar?