Introduction to Open ACC (Part 2)

Published on Sep 19, 20161056 Views

IHPCSS 2016 - Ljubljana

Exercise 1 C Solution00:00

Exercise 1: Compiler output (C)02:07

Exercise 1 Fortran Solution02:10

Exercise 1: Performance02:20

What’s with the OpenMP?03:13

What went wrong?03:23

Basic Concept05:27

Multiple Times Each Iteration05:56

Excessive Data Transfers06:05

Data Management06:53

First, about that "reduction"07:13

Data Construct Syntax and Scope09:38

Data Clauses09:51

Data Regions Are Different Than Compute Regions17:33

Compiler will (increasingly) often make a good guess…23:38

Data Regions Have Real Consequences24:29

Data Movement Decisions24:48

Exercise 2: Use acc data to minimize transfers27:49

Exercise 2 C Solution28:49

Array Shaping43:43

Exercise 2 Fortran Solution45:13

Exercise 2: Performance46:27

OpenACC or OpenMP?47:58

OpenACC or OpenMP on Larger Data?48:24

Latest Happenings In Data Management49:09

Further speedups50:43

General Principles: Finding Parallelism In Code51:31

Is OpenACC Living Up To My Claims?52:09

In Conclusion…53:54