2iSome years ago I started work on my first CUDA implementation of the Multiparticle Collision Dynamics (MPC) algorithm, a particle-in-cell code used to simulate hydrodynamic interactions between solvents and solutes. As part of this algorithm, a num…

1.啥是java的原子性 原子性:即一个操作或者多个操作 要么全部执行并且执行的过程不会被任何因素打断,要么就都不执行. 一个很经典的例子就是银行账户转账问题: 比如从账户A向账户B转1000元,那么必然包括2个操作:从账户A减去1000元,往账户B加上1000元. 试想一下,如果这2个操作不具备原子性,会造成什么样的后果.假如从账户A减去1000元之后,操作突然中止.然后又从B取出了500元,取出500元之后,再执行 往账户B加上1000元 的操作.这样就会导致账户A虽然减去了1000元,但是…

On the Intel type of x86 processors including AMD, increasingly there are more CPU cores or processors running in parallel. In the old days when there was a single processor, the operation: ++i; Would be thread safe because it was one machine instruc…

In one embodiment, a method includes receiving an instruction for decoding in a processor core and dynamically handling the instruction with one of multiple behaviors based on whether contention is predicted. If no contention is predicted, the instru…

A method and apparatus for a atomic operation is described. A method comprises receiving a first program unit in a parallel computing environment, the first program unit including a memory update operation to be performed atomically, the memory updat…

Welcome back to what’s going to be the last “official” part of this series – I’ll do more GPU-related posts in the future, but this series is long enough already. We’ve been touring all the regular parts of the graphics pipeline, down to different le…

深入分析Volatile的实现原理 引言 在多线程并发编程中synchronized和Volatile都扮演着重要的角色,Volatile是轻量级的synchronized,它在多处理器开发中保证了共享变量的"可见性".可见性的意思是当一个线程改动一个共享变量时,另外一个线程能读到这个改动的值. 它在某些情况下比synchronized的开销更小.本文将深入分析在硬件层面上Inter处理器是怎样实现Volatile的,通过深入分析能帮助我们正确的使用Volatile变量. 术语定义 术…

C++11开发中的Atomic原子操作 Nicol的博客铭 原文  https://taozj.org/2016/09/C-11%E5%BC%80%E5%8F%91%E4%B8%AD%E7%9A%84Atomic%E5%8E%9F%E5%AD%90%E6%93%8D%E4%BD%9C/ 主题 C++ 原子操作在多线程开发中经常用到,比如在计数器,序列产生器等地方,这类情况下数据有并发的危险,但是用锁去保护又显得有些浪费,所以原子类型操作十分的方便. 原子操作虽然用起来简单,但是其背景远比我们想象…

文档: http://www.boost.org/doc/libs/1_53_0/doc/html/atomic.html Presenting Boost.Atomic Boost.Atomic is a library that provides atomic data types and operations on these data types, as well as memory ordering constraints required for coordinating multi…

系统用的是centos 7.0最小化安装 我现在安装完了 写一下步骤 还没完全搞懂 首先安装GCC [root@localhost ~]# yum install -y gcc gcc-c++ 已加载插件:fastestmirror base | 3.6 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 Determining fastest mirrors * base: mirrors.yun-idc.com * extras: mi…