Please note that because this project uses a high-resolution climate model, it has fairly heavy CPU and Memory requirements:

• CPU: Pentium 4, 2.4GHz (or equivalent, or higher!) is the minimum CPU suggested to complete a single simulation in under 4 weeks if run continuously. Slower processors will take longer.
• RAM: 1GB of RAM is suggested, as the simulation takes up typically between 150-450MB of memory.
• Disk space: 500MB of hard disk space should suffice.
• Supported platforms: Windows XP/2000/NT and Linux.

In-house Alpha tests of the model have demonstrated that a single simulation run continuously on a Pentium 4 2.4GHz processor takes less than 4 weeks to complete (and less than 3 weeks on a Pentium 4 3.0GHz processor). There is a single upload at the end of the simulation, via the Internet, of around 25MB. There are also trickles every five model-days informing us of the status of the simulation, but these are relatively very small. You do not, however, need to be continuously connected to the Internet whilst the simulation is in progress.

If your computer does not meet these requirements then we suggest you try another one the climatepredcition.net projects.