May, 2008

Posts
  • Affinity

    Did you notice that the latest CTP has introduced a new option for mpiexec? Using mpiexec -affinity you can affinitize the mpi rank to the core where it is started, thus avoiding context switches. Your application will determine whether you actually benefit...
  • HPC & Movies

    In my last post I investigated how HPC can be used to build UFOs. This time, I've learned to my surprise that HPC can be used to make movies! Digital media production follows a complex workflow, from initial sketch to wireframe model, to rendered 3D images...
  • 4x4 and other quick tips

    I've recently been involved in a simple benchmarking exercise. Here are a few quick "rules of thumb" that have helped me: - 4x4 A PCIe 4x slot is supposed to have 4 lanes capable of 250 MB/s each, for a total of 1 GB/s. An Infiniband SDR 4x card has 4...
  • Webcasts Again!

    Hey all, I'm doing another series of webcasts. 2 of them have already been aired, two more will happen shortly. Here are the topics: - deployment and management - high availability - new scheduler features - hpc server 2008 and linux You'll find a link...