scientific computing lecture 10

Scientific ComputingLecture 10

Dr. Guy Tel-Zur

Agenda

• Hybrid MPI+OpenMP• PDEs – continued from last lecture• Fourier Transform – Theory, FFT and Parallel FFT• Solution of EXE #1• EXE #3 (last)• Star HPC• Hybrid Parallel Computing (MPI + OpenMP)• New Kind of Science & Condor demo• OpenFoam

Star-HPC

• http://web.mit.edu/star/hpc/index.html• StarHPC provides an on-demand computing

cluster configured for parallel programming in both OpenMP and OpenMPI technologies. StarHPC uses Amazon's EC2 web service to completely virtualize the entire parallel programming experience allowing anyone to quickly get started learning MPI and OpenMP programming.

Username: mpiuserPassword: starhpc08

Hybrid MPI + OpenMP DemoMachine File:

hobbit1hobbit2hobbit3hobbit4

Each hobbit has 8 cores

mpicc -o mpi_out mpi_test.c -fopenmp

MPI

OpenMP

An Idea for a final project!!!

cd ~/mpi program name: hybridpi.c

MPI is not installed yet on the hobbits, in the

meanwhile:vdwarf5vdwarf6vdwarf7vdwarf8

top -u tel-zur -H -d 0.05

H – show threads, d – delay for refresh, u - user

Hybrid MPI+OpenMP continued

NKSReference: http://telzur.blogspot.com/2008/01/mysteries-of-cellular-automata.html

Working directoryC:\Users\telzur\Documents\BGU\Teaching\ComputationalPhysics\2011A\Lectures\03\NKS