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Recommended System Requirements

Please read this page before downloading BOINC and starting Running the application is quite demanding on your PC. Laptops, especially, can easily overheat if they are performing intense operations over a long period, and machines that do not have enough RAM can experience problems as they need to continuously write to disk. We don't want to cause disk crashes, so please take careful note of the technical requirements below.

If your machine is under the minimum specification, we recommend that you do not start the project. If you have attached to the project, and decide that it is "over-stressing" your computer, simply "Detach" from the project. You should find other BOINC projects that are suitable for your machine.

The main requirement for participating in is a certain amount of commitment. Each work unit (in this case, climate simulation) will take anything from between a few days to several months to complete. This is dependent on the model type, how fast your computer is and how much you leave it on. Incomplete runs cannot be handed on to another participant to complete.

Operating System Hardware Available Disk Memory
Microsoft Windows  
Windows 7 1.6GHz 1GB minimum 512MB
Windows Vista 1.6GHz 1GB minimum 512MB
Windows XP 1.6GHz 1GB minimum 512MB
Windows 2003 Server 1.6GHz 1GB minimum 512MB
Windows 2000 1.6GHz 1GB minimum 512MB
Intel Mac OS X 1.66GHz 600MB 192MB
Linux (32-bit)  
Red Hat Linux 8.X, 9.X 1.6GHz 1GB minimum 512MB
Mandrake Linux 10.x 1.6GHz 1GB minimum 512MB
Debian Linux 3.0 1.6GHz 1GB minimum 512MB
By core  
Dual-core - 4GB minimum 1.5GB
Quad-core - 8GB minimum 3GB
Hex-core (requires 64-bit OS) - 12GB minimum 4.5GB
8-core (requires 64-bit OS) - 16GB minimum 6GB
Internet Connection

Any type of Internet connection (e.g. dial-up, broadband, ISDN, LAN) is suitable to
(i) download the model and
(ii) send us back the results at the end of the run.


If you are in the habit of deliberately overclocking your CPU, you will be more prone to random crashes of the model than other people.

Graphics Compatibility

The application graphics requires a graphics card that supports OpenGL, with the latest drivers.

Additional Notes

- The model can only run when you have your computer switched on.

- Note that the extra greenhouse gas emission generated by the use of your PC is very small. However, whenever you need to switch your computer off, the simulation will be saved and will restart from the last place it reached when you next switch the computer on.

- You only need to connect to the internet at the beginning and, when prompted, at the end of the experiment to return data to us.

- Some models will crash even if your computer meets the minimum specification.

- As of late 2011, climate models require SSE2 to function. A computer without this will crash a model within a few seconds. Computers using 64 bit Linux need to have 32 bit libraries installed for the same reason.

- CPDN does not use GPU cores and there is no realistic chance of GPU cores being used in future due to length and complexity of the code.

- RAM: minimum memory requirement of 512MB per core, if running Weather At Home then 768MB are required and 2 GB free disk space per core is required.

If you have a technical question not answered by the information above, please go to the BOINC questions and problems page.

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