xealits’s gists

xealits / iowait.txt

Created January 5, 2021 00:29 — forked from haridsv/iowait.txt

Mirroring https://blog.pregos.info/wp-content/uploads/2010/09/iowait.txt

	What exactly is "iowait"?

	To summarize it in one sentence, 'iowait' is the percentage
	of time the CPU is idle AND there is at least one I/O
	in progress.

	Each CPU can be in one of four states: user, sys, idle, iowait.
	Performance tools such as vmstat, iostat, sar, etc. print
	out these four states as a percentage. The sar tool can
	print out the states on a per CPU basis (-P flag) but most

xealits / gler.py

Last active August 16, 2017 16:03

pyOpenGL example, extended habr_Ti_Fix_shaders.py from https://habrahabr.ru/post/247123/

	# -- coding: utf-8 --
	# from
	# Импортируем все необходимые библиотеки:
	from OpenGL.GL import *
	from OpenGL.GLU import gluPerspective
	from OpenGL.GLUT import *
	#import sys
	# Из модуля random импортируем одноименную функцию random
	from random import random

xealits / notes_on_starting_with_opencl-opengl-interoperability.md

Last active September 27, 2015 15:43

Making enjalot script on OpenCL-OpenGL interoperability

The code: https://github.com/enjalot/adventures_in_opencl/tree/master/part2/

From the README:

We demonstrate OpenCL and OpenGL context sharing by making a simple particle system.

Build:

xealits / Install Intel-CPU OpenCL on Ubuntu.md

Created September 23, 2015 14:41 — forked from rmcgibbo/ Install Intel-CPU OpenCL on Ubuntu.md

Installing Intel CPU OpenCL on Ubuntu 12.04

Open Computing Language (OpenCL) is a language and framework for writing computationally intensive kernels that run accross heterogenious platforms, including GPUs, CPUs, and perhaps other more esoteric devices.

Intel provides an OpenCL implementation for Intel CPUs, but there's not a lot of instructions on how to get it set up. Here's what I did.

Installing Intel CPU OpenCL on Ubuntu (12.04)

Download the Intel® SDK for OpenCL* Applications XE 2013 from the Intel website, here http://software.intel.com/en-us/vcsource/tools/opencl-sdk-xe. The download is a tarball -- the one I got is called intel_sdk_for_ocl_applications_2013_xe_sdk_3.0.67279_x64.tgz
Unpack the tarball and cd into the new directory

xealits / ROOT open, calculate, write out 1

Last active August 29, 2015 14:27

ROOT opening a tbranch of a ttree from a tfile, doing a calculation, writing a histogram

	#include "TFile.h"
	#include "TTree.h"
	#include "TH1D.h"

	#include <iostream>

	void histo2()
	{
	std::cout << "fetch file\n" ;

xealits / eos_commands

Last active October 11, 2016 15:58 — forked from nsahoo/eos_commands

EOS commands in CMS

	# list the files in EOS
	eos ls [-la] /eos/cms/user/t/test/

	# copy all inside the directory recursively
	eos cp -r /eos/cms/user/t/test/histodirectory/ /afs/cern.ch/user/t/test/histodirectory

	# copy a single file
	eos cp /eos/cms/user/t/test/histo.root /tmp/
	eos cp /eos/cms/store/user/Username/Datadir/Data.root .

xealits / reboot the system, run steam, crash, run again, the same error

Created January 1, 2015 19:32

end of 2014 year, double-upgraded Ubuntu from 13.04 to 14.04, Steam doesn't login. Sometimes it doesn't get even to login page. Sometimes the page does not respond. When it does after clicking login nothing happens. Here is the terminal outputs for various attempts

	$ steam
	Running Steam on ubuntu 14.04 32-bit
	STEAM_RUNTIME is enabled automatically
	Installing breakpad exception handler for appid(steam)/version(1416617579)
	Installing breakpad exception handler for appid(steam)/version(1416617579)
	Installing breakpad exception handler for appid(steam)/version(1416617579)
	Gtk-Message: Failed to load module "overlay-scrollbar"
	Gtk-Message: Failed to load module "unity-gtk-module"
	Gtk-Message: Failed to load module "overlay-scrollbar"
	Gtk-Message: Failed to load module "unity-gtk-module"

xealits / installed libnss-mdns-i386, got this message, removed the second monitor cable, got the same

Last active August 29, 2015 14:12

end of 2014 year, double-upgraded Ubuntu from 13.04 to 14.04, Steam doesn't login. Sometimes it doesn't get even to login page. Sometimes the page does not respond. When it does after clicking login nothing happens. Here is the terminal output after upgrading Intel graphics, installing libnss-mdns-i386 and removing second monitor cable.

 $ steam
 Running Steam on ubuntu 14.04 32-bit
 STEAM_RUNTIME is enabled automatically
 Installing breakpad exception handler for appid(steam)/version(1416617579)
 Installing breakpad exception handler for appid(steam)/version(1416617579)
 Installing breakpad exception handler for appid(steam)/version(1416617579)
 Gtk-Message: Failed to load module "overlay-scrollbar"
 Gtk-Message: Failed to load module "unity-gtk-module"
 Gtk-Message: Failed to load module "overlay-scrollbar"
 Gtk-Message: Failed to load module "unity-gtk-module"

xealits / no steam login @ Ubuntu 14.04, 1-1-2015

Created January 1, 2015 18:47

	$ steam
	Running Steam on ubuntu 14.04 32-bit
	STEAM_RUNTIME is enabled automatically
	Installing breakpad exception handler for appid(steam)/version(1416617579)
	Installing breakpad exception handler for appid(steam)/version(1416617579)
	Installing breakpad exception handler for appid(steam)/version(1416617579)
	Gtk-Message: Failed to load module "overlay-scrollbar"
	Gtk-Message: Failed to load module "unity-gtk-module"
	Gtk-Message: Failed to load module "overlay-scrollbar"
	Gtk-Message: Failed to load module "unity-gtk-module"

xealits / gctags

Created May 19, 2014 13:28 — forked from leoliu/gctags

	#!/bin/bash

	export GTAGSLABEL=ctags

	if [ -r $PWD/.globalrc ]; then
	GTAGSCONF=$PWD/.globalrc
	elif [ -r $HOME/.globalrc ]; then
	GTAGSCONF=$HOME/.globalrc
	elif [ -r /usr/local/share/gtags/gtags.conf ]; then
	GTAGSCONF=/usr/local/share/gtags/gtags.conf

Alex Toldaiev xealits

Installing Intel CPU OpenCL on Ubuntu (12.04)