My post on Cellular Automata from January 12 was not put there by mistake. I want to use it as a starting point for a couple of exercises in my Parallel Processing course. In that post I gave a few drawings that differ only by the generating rule number. Today, I am going to show how using the Condor High-Throughput Computing system allows to handle in a very simple way large volume of computations. I used this simple Condor submit file : universe = vanilla executable = nks.py Error = err.$(Process) Output= out.$(Process) Log = log.$(Process) Arguments = $(Process) Queue 256 And was able to compute the whole set of 256 rules (jobs) with the same effort of computing a single rule. I submitted the task to my Personal Condor on my laptop and was not disappointed; After a while I got all the outputs happily waiting for post processing.
[mpich-discuss] Errors while testing MPICH2 on Vista Guy Tel-Zur gtelzur at gmail.com Sat Oct 24 14:39:26 CDT 2009 Previous message: [mpich-discuss] MPI-3 Fortran feedback Next message: [mpich-discuss] MPI function to test a machine alive or not. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] I am trying to test a fresh installation of MPICH2 (version 1.2) on Vista32 and get the following errors: c:\temp>"c:\Program Files\MPICH2\bin\mpiexec.exe" -n 4 cpi.exe Please specify an authentication passphrase for smpd: <*I type here the passphrase, e.g. behappy*> Error while connecting to host, No connection could be made because the target machine actively refused it. (10061) Connect on sock (host=user-PC, port=8676) failed, exhaused all end points Unable to connect to 'user-PC:8676', sock error: Error = -1 I will appreciate any comment. --Gu
In this post I will show step by step how to install and execute MPI (Message Passing Interface) parallel programs in the .NET environment. A much more detailed tutorial is available here . 1) Installation: My computer is running Windows Vista and Visual Studio 2008 is already installed. Download and install the HPC Pack 2008 (next 5 figures): Then install the MPI.NET SDK.msi (see next 4 figures): 2) Test the installation from the command line (next 3 figures): A "Ping-Pong" program Serial run: As should be, the firewall detects the communication traffic and the user should allow it: Parallel run: 3) MPI "Hello" demo using Visual Studio 2008 and C# (next 5 figures): Start a new console C# project: Add Reference to the MPI component: Build the executable: Execute the parallel program with 8 threads: Verifying the execution of the 8 threads by looking at the Task Manager: That's all for now. Your comments are welcome. Guy Tel-Zur Email: tel-zur@computer.org
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