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So you want to write a sync system for a web app with offline and realtime support? Good luck. You might find the following resources useful.

Overview articles

Database in a browser, a spec (Stepan Parunashvili)

What problem are we trying to solve with a sync system?
The web of tomorrow (Nikita Prokopov)

A simple note for how to start multi-node-training on slurm scheduler with PyTorch.
Useful especially when scheduler is too busy that you cannot get multiple GPUs allocated, or you need more than 4 GPUs for a single job.
Requirement: Have to use PyTorch DistributedDataParallel(DDP) for this purpose.
Warning: might need to re-factor your own code.
Warning: might be secretly condemned by your colleagues because using too many GPUs.

Python 提供了两个基本的 socket 模块：

下面讲解下 Socket模块功能。

	sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
	sudo apt install build-essential libgtk-3-dev libgnutls28-dev libtiff5-dev libgif-dev libjpeg-dev libpng-dev libxpm-dev libncurses-dev texinfo \
	libjansson4 libjansson-dev \
	libgccjit0 libgccjit-11-dev gcc-11 g++-11
	./autogen.sh
	export CC=/usr/bin/gcc-11 CXX=/usr/bin/gcc-11
	./configure --with-native-compilation --with-json --with-pgtk
	make -j8
	sudo make install

	## db/connect: create to the local database
	.PHONY: db/connect
	db/connect:
	sqlite3 db.sqlite

	## db/migrations/new name=$1: create a new migration
	.PHONY: db/migrations/new
	db/migrations/new:
	go run -tags 'sqlite3' github.com/golang-migrate/migrate/v4/cmd/migrate@latest create -seq -ext=.sql -dir=./resources/migrations ${name}

	# Unix (Terminal)
	open -a "Google Chrome" --args --disable-gpu-vsync --disable-frame-rate-limit

	# Windows (Command prompt)
	start chrome --args --disable-gpu-vsync --disable-frame-rate-limit

	// Add this to LinqPad "C# Program"
	// Example use:
	// Insead of this: (create a List<CS_POSITION>)
	// CS_POSITIONs.InsertOnSubmit(position);
	// This:
	// positions.Add(position);
	//
	// Then instead of this:
	// SubmitChanges()
	// This:

	for product in IntelliJIdea WebStorm DataGrip PhpStorm CLion PyCharm GoLand RubyMine; do
	echo "Resetting trial period for $product"

	echo "removing evaluation key..."
	rm -rf ~/.config/$product*/eval

	# Above path not working on latest version. Fixed below
	rm -rf ~/.config/JetBrains/$product*/eval

	echo "removing all evlsprt properties in options.xml..."

	// Email validation by third-party API

	// The following example shows how you can send the value of an Email type field to a third-party API to determine if the email is valid. In this example we are using the QuickEmailVerification API.

	add_filter( 'gform_field_validation', function ( $result, $value, $form, $field ) {
	if ( $field->get_input_type() === 'email' && $result['is_valid'] ) {
	$request_url = add_query_arg(
	array(
	'email' => $value,
	'apikey' => 'your_api_key_here',