Category: Media

Image, video and sound

POV-Ray II - no free lunch on EC2

In this post, I’ll take a look at some runs of the POV-Ray application available in the GridPilot app store: To import this app, just choose “File → Import application”, navigate to the relevant folder and click “OK”.

This application is a bit more sophisticated than the one used for the simple benchmarking described in a […]

MP3 encoding on GridFactory

This is the application demoed in the screencast on the front page. The demo uses the default input files - which are 12 royalty free music files found on incompetech.com. This can be changed - by right-clicking on the input dataset, “music_files”, and choosing “Import file(s)”. If you’ve already imported the default files, just select […]

MP4 transcoding on EC2 with GridPilot and GridFactory

      

Given the popularity of the iPhone, an interesting use of a batch system is conversion of movie files from the AVI to the MPG4 format. In this post I’ll explain 3 ways doing this with GridPilot. Which way you prefer will likely depend on the number and size of files you want to convert and […]

POV-Ray rendering

To gauge the performance of both GridFactory and virtualization layers in a high-CPU/low-throughput setting, we chose the standard ray-tracing program POV-Ray and a standard benchmarking image, shipped with the program.

The standard image that was rendered.

This example is a fairly naive benchmarking exercise consisting simply in rendering the same image with POV-Ray 20 times. Each […]