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Showing posts from November, 2009

The next IGT HPC Work Group meeting

The next Israeli Association of Grid Technologies High-Performance Computing Work Group meeting13:45-16:00, January 20, 2010 IGT Office Maskit 4 HertzeliyaAgenda:13:45-14:00 Opening by Avner Algom and Guy Tel-Zur14:00-15:00 Prof. Tilo Wettig, Ph.D., University of Regensburg, Germany - The QPACE supercomputer (Live via Webex)15:00-15:15 Coffee break15:15-16:00 Dr. Guy Tel-Zur, IGT – Challenges in teaching Parallel Computing
Program:
14:00-15:00Prof. Tilo Wettig, Ph.D., University of Regensburg, Germany - The QPACE supercomputerProf. Tilo Wettig will give an overview of the QPACE supercomputer, which was
developed by a collaboration of several academic institutions and the IBM R&D lab Boeblingen, Germany. QPACE is a massively parallel architecture, allowing a single application to run on thousands of nodes. Individual nodes consist of a PowerXCell 8i processor and an FPGA that functions as network coprocessor. The nodes are connected in a 3-dimensional torus. The target application…

Parallel Computing on Windows

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There are many ways to use MPI. In this post I show how to install and use the DeinoMPI implementation which looks very cool and is free.
The screen captures in this post were taken using the nice SnapIt tool.

Part 1: Installing DeinoMPI

After downloading and starting the msi file:








Part 2: Configuring DeinoMPI
2.1 Start the deinoMPI daemon:


2.2 Credentials


Part 3: Testing
In this part I show how to compile a MPI program with the free Bloodshed DevC++ IDE.
I use the famous cpi.c code


This installation is "Local Only" (perhaps in one of my future posts I will show how to use this tool with more than one node):


The Windows Firewall is noticing the new player:


Here is the execution and output window:


It is nice to see the Task Manager showing the 10 parallel running processes:


Part 4: A little-bit Mathematics

The integration in cpi.c is done for f(x)=1/(1+x**2) between 0 to 1.
It is nice to replace this function by f(x)=sqrt(1-x**2) also between 0 to 1 (the unit circle).
Strangely enough, inte…