zopieux

QNAP TS-453 Pro: LCD, LEDs, fan & buttons

QNAP NAS model TS-453 Pro has limited documentation on how to control its various peripherals, namely:

• the front LCD display, a 2 row, 16 column blue & white LCD display, and its two menu buttons ("ENTER", "SELECT")
• the front LEDs "STATUS" (red & green) & "USB" (blue)
• the 4 "disk error" LEDs (red)
• the front "USB COPY" button
• the main rear fan

nadavrot

High-Performance Matrix Multiplication

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).

Intro

Matrix multiplication is a mathematical operation that defines the product of

krisrice

script
var CopyOption              = Java.type("java.nio.file.StandardCopyOption");
// put all files here >>>
var ddlPath = java.nio.file.FileSystems.getDefault().getPath('ddl')

var fs      = java.nio.file.FileSystems.getDefault();
var f       = java.nio.file.Files;

if ( ! f.exists(ddlPath)) {
    f.createDirectory(ddlPath)

mickn

# Paths {{{
set folder            = ~/Mail                # mailbox location
set alias_file        = ~/.mutt/alias          # where to store aliases
set header_cache      = ~/.mutt/cache/headers  # where to store headers
set message_cachedir  = ~/.mutt/cache/bodies   # where to store bodies
set certificate_file  = ~/.mutt/cerficates     # where to store certs
set mailcap_path      = ~/.mutt/mailcap        # entries for filetypes
set tmpdir            = ~/.mutt/temp           # where to keep temp files
set signature         = ~/.mutt/sig            # my signature file

vzaliva

#!/bin/bash

# Vadim Zaliva lord@crocodile.org
# based on https://gist.github.com/hadess/6847281

if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

arpanpal010

#!/bin/bash

# default location of theme and wallpaper
# replace 'awtheme' with your current theme
wallpaperDestination="$HOME/.config/awesome/themes/awtheme/wallpaper";
# add #include "/home/arch/.Xresources_colors" to .Xresources
colorScriptDestination="/home/arch/.Xresources_colors"

# add [[ -f "$HOME/.bash_colors" ]]    && . "$HOME/.bash_colors"; to .bashrc
# bashColorsDestination="/home/arch/.bash_colors"

nicky-zs

#include <string.h>

void *__memcpy_glibc_2_2_5(void *, const void *, size_t);

asm(".symver __memcpy_glibc_2_2_5, memcpy@GLIBC_2.2.5");
void *__wrap_memcpy(void *dest, const void *src, size_t n)
{
    return __memcpy_glibc_2_2_5(dest, src, n); 
}

guifromrio

This can reduce files to ~15% of their size (2.3M to 345K, in one case) with no obvious degradation of quality.

ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

Other options for PDFSETTINGS:

• /screen selects low-resolution output similar to the Acrobat Distiller "Screen Optimized" setting.
• /ebook selects medium-resolution output similar to the Acrobat Distiller "eBook" setting.
• /printer selects output similar to the Acrobat Distiller "Print Optimized" setting.
• /prepress selects output similar to Acrobat Distiller "Prepress Optimized" setting.

ruediger

*.tex   diff=tex
*.bib   diff=bibtex
*.c     diff=cpp
*.h     diff=cpp
*.c++   diff=cpp
*.h++   diff=cpp
*.cpp   diff=cpp
*.hpp   diff=cpp
*.cc    diff=cpp
*.hh    diff=cpp