Message boards : Number crunching : CPU or GPU
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Ken Florian Send message Joined: 4 May 12 Posts: 56 Credit: 1,832,989,878 RAC: 0 Level  Scientific publications     | |
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dollar for dollar, I've understood that gpu tasks are "cheaper" than cpu tasks....eg. If I've got one dollar to spend getting "work" done then using a gpu is more efficient than a cpu. | |
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Stefan Project administrator Project developer Project tester Project scientist Send message Joined: 5 Mar 13 Posts: 348 Credit: 0 RAC: 0 Level  Scientific publications  | |
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Difficult to compare considering we run totally different work on CPUs than GPUs. On CPUs we run docking algorithms while on GPUs we run full atom molecular dynamics simulations. | |
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Ken Florian Send message Joined: 4 May 12 Posts: 56 Credit: 1,832,989,878 RAC: 0 Level Scientific publications | |
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ya, I know there are a lot of variables. | |
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Ken Florian Send message Joined: 4 May 12 Posts: 56 Credit: 1,832,989,878 RAC: 0 Level Scientific publications | |
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Actually, I can refine the question.. | |
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 Retvari Zoltan Send message Joined: 20 Jan 09 Posts: 2343 Credit: 16,206,655,749 RAC: 261,147 Level  Scientific publications | |
If I could spend $1,000 on running gpugrid tasks would you prefer I run GPU or CPU tasks? This is your choice, but I would buy a GPU. There are more CPUs available for BOINC projects, than GPUs. GPUs are far more power efficient than CPUs (i.e. you can do more science on GPUs by spending the same amount of money). The only factor that could alter this choice if there's no GPU application for the desired goal. So if you want to do protein folding, you have to spend on CPU - if you want to do the "usual" Molecular Dynamics you have to spend on GPU. | |
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mikey Send message Joined: 2 Jan 09 Posts: 297 Credit: 6,145,364,801 RAC: 30,189,258 Level  Scientific publications    | |
Actually, I can refine the question.. Another thought is if you fund a cloud machine in the end your 1000 bucks is gone and you have nothing to show for it except a few stats. If you buy a new gpu you do have something physical to hang on to and use for anything else later on, even just playing games. Theoretically of course YOU could be THE ONE to find the key to everything with your cloud funded machine, but the chances are slim and none, and I hear slim left town a while ago. | |
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Message boards : Number crunching : CPU or GPU
