mpreda

15 ms·

151.
by mpreda 7y ago
What is the algorithm for verifying the VDF output? Specifically, I compute y = x^(2^N) mod M using N modular squarings, how do you verify the result?
152.
by mpreda 8y ago
A flat consumption tax would be regressive if the two extremes (rich vs. poor) would buy the same goods; but they don't. The very poor buy cheap food, the very rich buy diamonds and services ("dog walking", "garden desig
153.
by mpreda 8y ago
The "binary heap" https://en.wikipedia.org/wiki/Binary_heap is a very useful and extremely simple algorithm; it is in my toolbox of fundamental algorithms.
154.
by mpreda 8y ago
Prime95 https://www.mersenne.org/download/ has what is probably the fastest CPU FFT implementation; specialized and carefully tuned to Intel & AMD CPUs, with AVX assembly. My project GpuOwl https://githu
155.
by mpreda 8y ago
Intel leads in AVX/AVX2/AVX512 perf by a large factor over Ryzen CPUs. (A software that makes that manifest is Prime95 (Mersenne primality tester)). Looks like AMD did have to cut something after all.
156.
by mpreda 9y ago
I'm thinking about this simple trick to keep the safety driver focused: at random intervals, the software would provide a stimulus (such as a red LED light projected on windshield), and the person would need to react as quickly as poss
157.
by mpreda 9y ago
But no mention of PKD (Philip K. Dick) and his novel "Do Androids Dream of Electric Sheep?", on which the movie "Blade Runner" is based.. ?
158.
by mpreda 9y ago
Now that's what I call a complete meal, the drink included :)
159.
by mpreda 9y ago
As I started preparing home-made kefir, I realized that full-fat milk has a balanced protein-fat content, and is rich in some other nutrients. Fermentation to kefir reduces the lactose content while increasing some of the good things (vitam
160.
by mpreda 10y ago
The GIMPS (Mersenne numbers search) project has a really extremely fast AVX2 assembler implementation of double FFT http://www.mersenne.org/download/ .
161.
by mpreda 10y ago
1 Wh is about 0.9 kilocalories. So 1kWh is about 100g of butter. The energy expenditure of a human in one day is about 2kWh. 1kWh is about the energy needed to heat 10L of water from 0 deg celsius to 100 deg celsius.