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2.4 Points - Results - Credits·Will I lose points if work finishes slower than usual?
·What are points?
·Why have I not received credit for I have completed a result?
·[BOINC] How are points calculated for the BOINC agent?
·[BOINC] Why does my BOINC agent show different points than the web site?
·[BOINC] What is Validation and what is a Result Status
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No. Points are not tied to number of work units, but amount of computational effort exerted. Therefore, if your computer worked for three days on one work unit, or in those same three days completed five work units, you would get the same amount of points if the machine worked at the same level of effort.
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by Digibits  edited by lilhurricane
last modified: 2007-05-13 08:18:15 |
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Your PC contribution is shown in three measures-points, total run time and results returned. The term points is simply used as a way of measuring the amount of computation your PC has contributed. If your PC works for three days on one work unit, or in those same three days completes 5 work units, you will accumulate the same number of points assuming that your PC worked at about the same level of effort in each scenario.
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by Digibits edited by lilhurricane
last modified: 2007-05-13 08:18:03 |
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BOINC does not award credit to users until the work they have performed has been successfully validated. This means that users may experience a delay in being granted credit while BOINC waits for enough results to be returned in order to perform validation.
See this for info about Validation »Team Discovery WCG BOINC FAQ »[BOINC] What is Validation and what is a Result Status
Thanks to Ascent and Digibits
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by Digibits edited by lilhurricane
last modified: 2008-07-21 20:26:41 |
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BOINC points are calculated in a two-step process. First, the points (also called credit) claimed by a host are determined. BOINC points are calculated based on a benchmark that is run periodically by the BOINC client. This benchmark is then run through a calculation that determines how much credit per second of run time that device should earn. More information about that formula is available at the following sites: »boinc.berkeley.edu/credit.php and »en.wikipedia.org/wiki/BOINC_Cred···lestones
Second, once validation has been completed, BOINC gives the same credit for a result to every device that worked on the same work unit. BOINC calculates how much credit this should be by taking the claimed credit for each result that was determined to be valid, eliminating the low and high values and then averaging the rest.
This process eliminates the ability for malicious users to artificially claim higher points for their work.
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by Digibits edited by Dersgniw
last modified: 2007-05-11 17:04:24 |
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The BOINC agent and the UD agent compute points differently. In particular, BOINC points are much lower than UD points. As a result, World Community Grid multiplies the points granted to a user for a result by 7 when the statistics are imported into World Community Grid's web site. The BOINC client is not aware of this multiplication, and it thus reports the points that were granted by BOINC.
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by Digibits edited by Dersgniw
last modified: 2007-05-11 17:03:42 |
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Validation
World Community Grid is a public distributed computing project. This means that work is being sent to computers that are outside the control of World Community Grid. Most computers that perform this work are reliable. However, there are a few computers that are not reliable due to things such as users over-clocking their machines, memory errors, disk errors, CPU errors or viruses being present on the machine. This means that the results returned need to be validated to make sure that they represent the correct answer. We have configured BOINC so that the results from at least four computers calculate the same result before it is accepted as the correct result. This ensures the integrity of the data returned to the scientists.
If you go to your Result Status Page you can see the status of validation. Here are the definitions of the statuses:
* Work In Progress - This means that one of your computers is currently working on it
* Error - Some event occurred to keep the result from finishing properly. This could be due to the user canceling the result, a BOINC error or a science application error.
* No Reply - The result was not returned to the server by the time it was due.
* Pending Validation - The result was returned to the server but there have not been enough results for that workunit returned to the server yet for validation to be attempted
* Valid - The result was returned to the server and was equal to the majority of results returned for the workunit.
* Invalid - The result was returned to the server and was not found to be equal to the majority of results returned for the workunit.
* Inconclusive - The result was returned to the server and validation was attempted but the system could not determine which results it should consider to be the valid ones. New results were sent out for this workunit and validation will be attempted again when those results are returned.
* Too Late - The result was returned to the server a long time after it was due and so no credit was granted.
* Other - The most common reason for this status is that the BOINC server decided that the workunit should be sent out to another computer but prior to the workunit actually being sent again, the workunit was validated.
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by Dersgniw
last modified: 2007-05-11 17:07:31 |
