Points are calculated in a two-step process which attempts to give a consistent number of points for similar amounts of research computation. First, the computational power/speed of the computer is determined by periodically running a benchmark calculation. Then, based on the central processing unit (CPU) time spent computing the research result for a work unit, the benchmark result is used to convert the time spent on a work unit into points. This adjusts the point value so that a slow computer or a fast computer would produce about the same number of points for calculating the research result for the same work unit. This value is the number of point credits "claimed" by the client. More information about that formula is available
here.
Second, research results returned to the servers are validated in a manner which depends on the research project. Then the claimed points for valid results are examined for anomalous (excessively high or low compared to other machines computing the same or equivalent work unit) values and adjusted accordingly. The servers assign the resulting adjusted point values to the member (and team) for each of the returned work units. This process
https://en.wikipedia.org/wiki/BOINC_Credit_System#CobblestonesCobblestones
The basis for the BOINC credit system is the
cobblestone, named after Jeff Cobb of
SETI@home. By definition, 200 cobblestones are awarded for one day of work on a computer that can meet either of two benchmarks:
The actual computational difficulty needed to run a given work unit is the basis for the number of credits that should be granted. The BOINC system allows for work of any length to be processed and have identical amounts of credit issued to a user. In so doing, BOINC uses
benchmarks to measure the speed of a system, combining that figure with the amount of time required for a work unit to be processed. The interface then can “guess” at the amount of credit a user should receive. Since systems have many variables, including the amount of
RAM, the
processor speed, and specific architectures of different
motherboards and
CPUs, there can be wide discrepancies in the number of credits that different computers (and projects) judge a user to have earned.
Most projects require a consensus to be reached by having multiple hosts return the same work unit. If they all agree, then the credit is calculated and all hosts receive the same amount regardless of what they asked for. Each project can use their own policy depending on what they see is best for their specific needs. In general, the top and bottom claimed credits are dropped and an average of the remaining is taken. However, certain other projects award a flat amount per work unit returned and validated.
WGC is not the only BOINC Project that also has Claimed Points vs Granted Points.
Though WGC is one of the only Project that is Not 100% BOINC Controlled that is it is not a Global Project that can be managed from 3rd Party Tools like BAM!.
As with BAM! you can Add this Project and turn on an off getting Tasks but you cannot manage Profile or Computer Settings.
Some Good Charts
Link (More than 50% of users are Not in a Team) over on BAM!
post edited by bcavnaugh - 2017/08/09 07:03:28