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HPC for dummies

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Olga Strizhenko

on 28 September 2012

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Transcript of HPC for dummies

High Performance Computing Olga Strizhenko
Siemens, CT

September,2012 Content What is HPC? High Performance Computing encompasses a collection of powerful:

hardware systems
efficient algorithms
software tools
programming languages
parallel programming paradigms

which make previously unfeasible calculations possible SuperComputer is a computer at the frontline of current processing capacity, particularly speed of calculation. http://www.top500.org Lomonosov Supercomputer 22 place in the top500 500 most powerful... Computing machines evolution Abacus Slide rule Adding machine 1st generation Super Computer Parallelism What can be parallelized? Data Instructions Flynn's taxonomy Single data Multiple data Single Instruction 5+7= (cc) image by anemoneprojectors on Flickr Multiple
Instruction SISD SIMD MIMD MISD Von Neumann architecture GPU
Vector computers MIMD multiprocessors multicomputers with distributed memory with shared memory OpenMP MPI Hello, world! Hello, world! 2nd generation 3rd generation 4th generation Sequential Algorithm #pragma omp parallel for OpenMP approach MPI approach MPI and OpenMP comparison Sequential Algorithm MPI solution Data distribution
Parallel calculation of distributed data
Data joining Size Speed Typical problem domains include but are not limited to: Medicine
Computational Fluid Dynamics
Global Weather and Environmental Modeling
Cosmology and Astrophysics N=500
N=1 SUM Top 500
historical data Motivation part 61 TFlop/s 16.3 PFlop/s 123 PFlop/s
N=500 N=1 SUM Top 500
historical data Motivation part 2020 - 1 Eflop/s
“Luck is what happens when preparation meets opportunity.” Seneca the Younger Thank you for attention HPC concepts

Flynn's taxonomy

Parallel programming paradigms
Full transcript