This is a short post that explains how to write a high-performance matrix multiplication program on modern processors. In this tutorial I will use a single core of the Skylake-client CPU with AVX2, but the principles in this post also apply to other processors with different instruction sets (such as AVX512).
Matrix multiplication is a mathematical operation that defines the product of
| package org.treeml; | |
| import java.io.IOException; | |
| import java.util.*; | |
| import java.util.logging.Logger; | |
| /** | |
| * Evaluates that a document (the referrer) makes references existing values in another document | |
| * or group of documents (the source). | |
| * Created by Ags on 6/25/2016. |
| /** | |
| * K.jpg's OpenSimplex 2, smooth variant ("SuperSimplex") | |
| * | |
| * More language ports, as well as legacy 2014 OpenSimplex, can be found here: | |
| * https://github.com/KdotJPG/OpenSimplex2 | |
| */ | |
| public class OpenSimplex2S { | |
| private static final long PRIME_X = 0x5205402B9270C86FL; |
| #undef HID_ENABLED | |
| // Arduino Due ADC->DMA->USB 1MSPS | |
| // by stimmer | |
| // from http://forum.arduino.cc/index.php?topic=137635.msg1136315#msg1136315 | |
| // Input: Analog in A0 | |
| // Output: Raw stream of uint16_t in range 0-4095 on Native USB Serial/ACM | |
| // on linux, to stop the OS cooking your data: | |
| // stty -F /dev/ttyACM0 raw -iexten -echo -echoe -echok -echoctl -echoke -onlcr |
