Visual Studio 2010 Beta 2

About Me

• Microsoft MVP• Intel Blogger• TechEd Israel, TechEd Europe• Expert C++ Book

• http://AsyncOp.com• http://Asaf.Shelly.co.il

Task Parallel Library - TPL

• .Net Framework 3.5• See TechEd 2008• VS2010 with .Net 4.0• Language Extensions• Lambda Expressions• C#, VB, F#, C++

From for to Parallel.For

for (int i=0; i<100; i++){ int x = i + i;}

Parallel.For(0, 100, i =>{ int x = i + i;});

C++ parallel_for

parallel_for(0, 100, [&] i{ int x = i + i;});

Visual Studio 2010

• Multi-Core Programming• Tasks• Agents• Parallel Loops• Parallel Algorithms• Parallel Replacement for STL• Seamless Task Usage

Task Oriented Design

Modify

Write

Open

Modify

Scan ScanScanScan ScanScan

PLINQ – Parallel LINQ

VS2010 DemoC# Parallel.For

Keep an eye for…

• Shared are Globals• Parallel Loops are not loops• Define data as Loop internal• Race Conditions are still here• Locks!!• I/O – Disk, Network, etc.

VS2010 DemoC++ Parallel_For

VS2010 DemoUnderstanding Lambda and parallel_for

Visual Studio Parallel Debugger

• Parallel Task List• Parallel Task Stack• Built-in Profiler

Parallel Pattern Library

Resource Manager

Task Scheduler

Task Parallel Library

PLINQ

Managed Library Native LibraryKey:

ThreadsOperating System

Concurrency Runtime

Programming Models

AgentsLibrary

ThreadPool

Task Scheduler

Resource Manager

Data Structures

Dat

a St

ruct

ures

Integrated Tooling

Tools

ParallelDebugger

Toolwindows

Profiler Concurrency

Analysis

Programming Models

Concurrency Runtime

Advanced Parallel In VS2010

• Agents – Resource Owners• Task Groups• Task Cancellation• Task Cleanup (CancelIo)

VS2010 DemoNew F# Application

Hints for the future

• http://msdn.microsoft.com/en-us/devlabs/dd795202.aspx

• AXUM – Language for parallel computing• STM.Net - Software Transactional Memory for

concurrent memory separation• Spec Explorer – Graphical analysis of software

behavior• … and more

A bit nostalgia

• TechEd 2008 Israel

Do we really want Parallel Code?Do users even care?

2005 2007 2008 2010

Change In MindsetEverything is stopped. Waiting for the photographer

Everyone is working independently

Change In MindsetDevelopers are writing functions

Developers are managing tasks

Change In MindsetDoing things the way we always have

Things are going to be different

Thank You