It's not pretty and still needs some work but the present opt-out system facilitates a massive gulf in credits between some projects. This fundamentally undermines the concept of a credit system. I think it's been discussed elsewhere and over a long time but for GPU projects it would need to be based on app complexity, utilization, power usage, GFlops and take into account the relative performance of a similar app on a CPU. Fortunately all of these things can be measured with the exception of complexity which could be estimated and agreed upon. There are lots of reasons to crunch and credits generally isn't too high on the list, but the worst reason now is probably project wide Boinc credits because it isn't uniform and therefore misrepresents contribution.

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FAQ's

HOW TO:
- Opt out of Beta Tests
- Ask for Help

It's not pretty and still needs some work but the present opt-out system facilitates a massive gulf in credits between some projects. This fundamentally undermines the concept of a credit system. I think it's been discussed elsewhere and over a long time but for GPU projects it would need to be based on app complexity, utilization, power usage, GFlops and take into account the relative performance of a similar app on a CPU. Fortunately all of these things can be measured with the exception of complexity which could be estimated and agreed upon. There are lots of reasons to crunch and credits generally isn't too high on the list, but the worst reason now is probably project wide Boinc credits because it isn't uniform and therefore misrepresents contribution.

AGREED, the current credit system only works for each project, not when comparing credits between projects.

It's tricky enough keeping credits consistent inside this project. I don't even want to imagine the mess in comparing to others.

It's tricky enough keeping credits consistent inside this project. I don't even want to imagine the mess in comparing to others.

Don't even concern yourself with such issues, they are out of your hands. Focus on your research ;)

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FAQ's

HOW TO:
- Opt out of Beta Tests
- Ask for Help

Credit / WU is calculated based on runtime of a WU on one of our machines. So we run a WU on one of our GPUs check time required to run and multiply by credit/time. Then there is also the bonus for the long tasks and also the fact that we usually round the credits up. Additionally we sometimes submit the WU's with the wrong credits out of a small mistake in a input file (but we usually catch those).
So there can be many factors (different GPUs/our rounding/our mistake) that cause a discrepancy in the WU credits but we try to keep it as low as possible. Considering that users cannot pick the WU's they want to crunch I assume the credits average out.

In this same system used for working out how much credit is given to the CPU work unit?