An exaggerated claim will increase host_app_version.pfc_avg, causing subsequent credit to be scaled down proportionately. Host normalization mostly eliminates the incentive to cheat by claiming excessive credit (i.e., by falsifying benchmark scores or elapsed time). (This means that projects with efficient GPU apps will grant more credit than projects with inefficient apps. Projects with GPU apps should grant credit in proportion to the efficiency of the apps. Limited project neutrality: different projects should grant about the same amount of credit per host-hour, averaged over hosts.Completely automated - projects don't have to change code, settings, etc.It doesn't prevent credit cheating when single replication is used.Project that can't count FLOPs still have device neutrality problems.It doesn't address GPUs properly projects using GPUs have to write custom code.So published their average credit per CPU second, and other projects continued to use benchmark-based credit, but multiplied it by a scaling factor to match average. Not all projects could count FLOPs, however. We call this approach application allowed counting of FLOPs, and they adopted this system, adding a scaling factor so that average credit per job was the same as the first credit system. We added API calls to let applications report this. We then switched to the philosophy that credit should be proportional to the FLOPs actually performed by the application. This seemed arbitrary and unfair to users.
Formula boinc series#
In the above example, the 10 GFLOPS host would claim 10X as much credit, and its owner would be upset when it was granted only a tenth of that.įurthermore, the credits granted to a given host for a series of identical jobs could vary widely, depending on the host it was paired with by replication. The problem with this system is that, for a given app version, efficiency can vary widely between hosts. We call this system "Peak-FLOPS-based" because it's based on the CPU's peak performance. There were then various schemes for taking the average or min claimed credit of the replicas of a job, and using that as the "granted credit". In the first iteration of BOINC's credit system, "claimed credit" C of job J on host H was defined as All other discussions/topics on the credit mechanism are from 2008. The latest (2011/2012) information I've found that discuss the credit system and cheating are the two following publications: Let me introduce, Salt formula: GitLab CE made by EvaSDK.I originally started a discussion over at cryptocointalk about this: Īn user on /r/boinc felt that I should have posted the topic to the official BOINC message boards, so I'm crossposting the topic to here. Let me introduce, Webkit based scriptable web browser for python. Let me introduce, The Gentoo ebuild repository mirror made by EvaSDK. Let me introduce, Let your Python tests travel through time made by EvaSDK. Let me introduce, Dummy PHP document management application made by EvaSDK. Let me introduce, A structured logger for Fluentd (Python) made by EvaSDK. Let me introduce, Simple framework for creating REST APIs made by EvaSDK. Let me introduce, Irregular methods on regular expressions made by EvaSDK. Let me introduce, Ebuild Upstream Scanner made by EvaSDK. Let me introduce, Collection of configuration files for portage made by EvaSDK. Let me introduce, enchant spellchecking library made by EvaSDK. Let me introduce, Elogv is a simple tool written in python that allow you to easily read portage elog files. Let me introduce, Dockerfile for devpi pypi server made by EvaSDK. Let me introduce, A Redis cache backend for django made by EvaSDK. Let me introduce, Pipeline is an asset packaging library for Django. Let me introduce, Real Python Enums for Django made by EvaSDK. Let me introduce, Keep track of failed login attempts in Django-powered sites. Please DO regularely ping us with your link at #yourlabs IRC channel made by EvaSDK. Status: v3 stable, 2.x.x stable, 1.x.x deprecated. Let me introduce, A fresh approach to autocomplete implementations, specially for Django. Let me introduce, :honey_pot: A fake Django admin login screen page. Let me introduce, A set of scripts to help build debian packages made by EvaSDK. Let me introduce, Eggification branch of dbus-python package made by EvaSDK. Let me introduce, Project that helps to collect and browse your links. Let me introduce, Distributed Task Queue (development branch) made by EvaSDK.
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