I am confused by this. why is rosetta not sending out the same workunit to 3 or 4 people to make sure its crunched?

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Victory is the ONLY option!

Hi Dragokatzov, the short answer is that Rosetta doesn't rely on a quorum of 3 or 4 results before granting credit, unlike the other BOINC projects. What you claim is what you get.

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Also, if a WU fails or times out, it gets resent to another user, so someone else can have a crack at it. (If it fails a second time it doesn't get resent again.)

This approach maximises the number of WUs that get crunched. It also creates a different problem (credit) but that's another story...

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In thread Validation it is explained why Rosetta runs with "initial replication"=1, quorum=1

Basically, when testing a protein, we all get the same raw protein (aminoacid) data (same WU), the difference being the random seed (i.e. the initial instructions to our "virtual explorer" looking for the lowest elevation point).

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Best UFO Resources
Wikipedia R@h
How-To: Join Distributed Computing projects that benefit humanity

I am confused by this. why is rosetta not sending out the same workunit to 3 or 4 people to make sure its crunched?

Another way to explain is it that they need only the "best" (correct) result. Verifying the best result is easy and can be done independently. All other runs are actually tries to find the "best" (correct) result and thus not necessarily all needed.

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