Performance Tuning and OpenMP

Content

1. Performance Tuning and OpenMP
2.     Outline
3.     Motivation
4.     Performance Basics: Speed Up
5.     Performance Basics: Amdahl’s Law
6.     Consequence of Amdahl’s law: necessary parallelization
7.     Performance measurement: Profiling
8.     General issues: Problem size dependency of performance
9.     OpenMP version of Matrix Norm
10.     Performance on a PC (Dual Pentium II, 450 MHz)
11.     Performance on a Vectorcomputer (NEC SX-5Be)
12.     Performance on the Hitachi SR8000
13.     Performance comparison (2 threads with OpenMP)
14.     Use OpenMP only with sufficient workload: if-clause
15.     Performance with if-clause
16.     Performance with OpenMP: Avoid thread creation
17.     Performance with OpenMP: Avoid barriers
18.     Performance with OpenMP: Avoid barriers (II)
19.     Performance with OpenMP: load balancing
20.     Summary
21.     Exercise: Matrix Norm Calculation
22.     Exercise: Matrix Norm Calculation on SR8000
23.     Exercise: Matrix Norm Calculation on SR8000
24.     Exercise: Matrix Norm Calculation on SR8000
25.     Exercise: Matrix Norm Calculation
26.     Gnuplot