Berkeley Open Infrastructure for Network Computing Die BOINC-Plattform wird an der Universität Berkeley entwickelt und ermöglicht es, die ungenutzte Rechenleistung von vielen tausend Computern über das Internet oder Intranet verfügbar zu machen. Dies geschieht in Form von Projekten, die meist gemeinnützig arbeiten und von Universitäten oder anderen Institutionen betreut werden. Die derzeit rechenintensivsten Projekte umfassen unter anderem Berechnungen zur Erstellung eines genauen 3D-Modells der Milchstraße, die Suche nach außerirdischem Leben, Berechnung von Gravitationswellen, Vorhersagen zur Klimaentwicklung, sowie die Simulation von Proteinfaltungen für die Erforschung von neuen Medikamenten. Details[Bearbeiten] Bei der Entwicklung von BOINC wurden Erfahrungen des Distributed-Computing-Projekts SETI@home genutzt. Das Hauptziel der Plattform ist die Trennung der Projektverwaltung von den wissenschaftlichen Inhalten. Seit dem 18. Seit der Version 6.4.5 wird die CUDA-Technologie von Nvidia unterstützt. Bestandteile[Bearbeiten] Core-Client
SETI@home BOINC ClimatePrediction.Net gateway untitled BOINC downloads programs over the Internet and runs them on your PC. You may be concerned that BOINC could be exploited by hackers to run malware on your PC ("malware" is software that does malicious things such as stealing private data). Is BOINC safe? The short answer: in practice, yes. After 8 years, running on millions of PCs, there have been no security incidents due to BOINC. However, the lack of incidents does not mean that none are possible. How BOINC eliminates the most obvious risks. Code signing Suppose you volunteer for a project, and hackers break into that project's server and replace its programs with malware. BOINC uses a mechanism called code signing that makes this impossible, as long as projects use proper practices. Code signing is based on *public-key cryptography*. Projects are instructed to keep the private key only on a computer that is never connected to a network, and that is physically secure. Most BOINC projects follow these practices. Account-based sandboxing
untitled Eventually, credit may reflect network transfer and disk storage as well as computation. Credit has no monetary or other value; it's just a measure of how much work your computers have done. Credit and FLOPS The average FLOPS (floating point operations per second) achieved by a computer or group of computers can be estimated from its Recent Average Credit (RAC) as follows: GigaFLOPs = RAC/200 TeraFLOPS = RAC/200,000 (Remember that a 1 GigaFLOP machine, running full time, produces 200 units of credit in 1 day). The credit figures for a particular day may be distorted if a project is catching up or falling behind on validation (the process or granting credit). Recent Average Credit Projects maintain two counts of granted credit: Total credit: The total number of Cobblestones performed and granted. Both quantities (total and recent average) are maintained for each user, host and team. How benchmarks are calculated 'Whetstone' is a benchmark that is reported as 'Measured floating point speed'.