World IPv6 Day

World IPv6 Day is fast approaching (June 8th 2011), excerpt from their website; On 8 June, 2011, Google, Facebook, Yahoo!, Akamai and Limelight Networks will be amongst some of the major organisations that will offer their content over IPv6 for a 24-hour “test flight”. The goal of the Test Flight Day is to motivate organizations …

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Earthquake Data (fixed)

I just noticed that the Earthquake Data I’ve been collating had some minor errors (no lat/long), a quickity quick fix to some of the regular expressions and its back to normal.  A total of ~31,020 earthquake events, updated daily from data provided by the fine people involved in the GEOFON Extended Virtual Network project.

An Open MPI Master & Servant Example

Building on the Getting started… post from last week I’ve knocked up a quick example showing one way to get your MPI processes to communicate with one another. master_servant.c: #include <stdio.h> #include <mpi.h> #include <unistd.h> int main(int argc, char *argv[]) { int numprocs, rank, namelen; char processor_name[MPI_MAX_PROCESSOR_NAME]; MPI_Init(&argc, &argv); MPI_Comm_size(MPI_COMM_WORLD, &numprocs); MPI_Comm_rank(MPI_COMM_WORLD, &rank); MPI_Get_processor_name(processor_name, &namelen); …

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