keisuke umezawa keisuke-umezawa

1.0 Introduction

Multicore processor 時代の到来
- Mooreの法則は繰り返されない
- ソフトウェア開発者は自分で並列化しないといけない
この本はshared memoryで通信するmultiprocessorでのプログラミングについて語る(shared-memory multiprocessors)
- 1st part(principle)
  1. comutability
  2. concurrent program
  3. program corectness
2nd part(practice)

$$\hat{x} = \tilda{f} (\tilda{W}f(Wx+b)+\tilda{b}) y=f(Wx+b)：符号化 \hat{x} = \tilda{f} (\tilda{W}y+\tilda{b})：復号化$$

	import logging
	import math
	from typing import Tuple

	import optuna
	from optuna_dashboard._app import create_app


	host = "127.0.0.1"
	port = 8080

	import os
	import textwrap
	import time
	from typing import NoReturn

	import optuna
	from PIL import Image
	from optuna.trial import TrialState

	from optuna_dashboard import ObjectiveChoiceWidget, save_note

	import optuna

	from dask.distributed import Client
	from sklearn.datasets import load_digits
	from sklearn.ensemble import RandomForestClassifier
	from sklearn.metrics import accuracy_score
	from sklearn.model_selection import train_test_split


	def objective(trial):

	import argparse
	import time
	import lightgbm as lgb
	import numpy as np
	import sklearn.datasets
	import sklearn.metrics
	from sklearn.model_selection import train_test_split
	from statistics import mean, stdev

	import optuna

	int my_account = 0; // 私の預金口座残高
	int your_account = 100; // あなたの預金口座残高

	// 送金処理: データ競合(data race)あり！
	bool racy_transfer(int& src, int& dst, int m)
	{
	if (m <= src) { // 未定義動作の可能性あり！
	src -= m; // 未定義動作の可能性あり！
	dst += m; // 未定義動作の可能性あり！
	return true;

	import datetime


	ymdstr = datetime.date.today().strftime("%y-%m-%d")