View source for QMC@Home

{{Short description|BOINC based volunteer computing project}}{{Infobox distributed computing project|logo=QMCatHome.png|screenshot=QMC@Home.gif|screenshot caption=QMC@Home screensaver|platform=[[BOINC]]|operating_system=cross-platform|logo_size=95px|screenshot_size=300px}}

'''QMC@Home''' was a [[volunteer computing]] project for the [[BOINC]] client aimed at further developing and testing [[Quantum Monte Carlo]] (QMC) for use in [[quantum chemistry]].<ref>{{Cite journal |last1=Korth |first1=Martin |last2=Lüchow |first2=Arne |last3=Grimme |first3=Stefan |title=Toward the Exact Solution of the Electronic Schrödinger Equation for Noncovalent Molecular Interactions: Worldwide Distributed Quantum Monte Carlo Calculations |doi=10.1021/jp077592t |journal=J. Phys. Chem. A |volume=112 |issue=10 |pages=2104–2109|year=2008|pmid=18201073 |bibcode=2008JPCA..112.2104K }}</ref> It is hosted by the [[University of Münster]] with participation by the [[Cavendish Laboratory]]. QMC@Home allows volunteers from around the world to donate idle computer cycles to help calculate [[molecular geometry]] using [[Diffusion Monte Carlo]].

The project is developing a new application using [[density functional theory]].

The project began its [[Development stage#Beta|Beta]] testing on 23 May 2006. {{As of|2010|02|}}, QMC@Home has about 7,500 active participants from 102 countries, contributing about 5 [[FLOPS|teraFLOPS]] of computation power.<ref>{{citation |url=http://boincstats.com/stats/project_graph.php?pr=qmc |title=Detailed user, host, team and country statistics with graphs for BOINC |access-date=2010-02-13 |work=boincstats.com |url-status=dead |archive-url=https://web.archive.org/web/20100210123416/http://boincstats.com/stats/project_graph.php?pr=qmc |archive-date=2010-02-10 }}</ref>

==Workunits==
In order to get results from home computers the work is split into "workunits". The time it takes to complete a workunit depends on the size of the calculated system and the speed of the user's computer. The target time is between 4 and 48 hours on a 2.4 [[Hertz|GHz]] system.

This is a list of molecules recently{{when|date=November 2022}} tested:
1a [[Ammonia]]; 1 Ammonia dimer; 2a [[Water]]; 2 Water dimer; 3a [[Formic acid]]; 3 Formic acid dimer; 4a [[Formamide]]; 4 Formamide dimer; 5a [[Uracil]]; 5 Uracil dimer; 6a 2-[[pyridoxine]]; 6b 2-[[aminopyridine]]; 6 2-pyridoxine/2-aminopyridine; 7a [[Adenine]]; 7b [[Thymine]]; 7 Adenine/thymine WC; 8a [[Methane]]; 8 Methane dimer; 9a [[Ethene]]; 9 Ethene dimer; 10 [[Benzene]]/methane; 11a Benzene; 11 Benzene dimer; 12a [[Pyrazine]]; 12 Pyrazine dimer; 13 Uracil dimer; 14a [[Indole]]; 14 Indole/benzene; 15 Adenine/thymine stack; 16b [[Ethyne]]; 16 Ethene/ethyne; 17 Benzene/water; 18 Benzene/ammonia; 19b [[Hydrogen cyanide]]; 19 Benzene/hydrogen cyanide; 20 Benzene dimer; 21 Indole/benzene; 22a Phenol; 22 Phenol dimer

==See also==
*[[List of volunteer computing projects]]

==References==
{{Reflist}}

==External links==
*{{YouTube|id=fNWUs9jRwSY|title=QMC screensaver video}}

{{BOINC topics}}

{{DEFAULTSORT:QMC at Home}}

[[Category:Science in society]]
[[Category:Free science software]]
[[Category:Volunteer computing projects]]
[[Category:Quantum chemistry]]
[[Category:University of Münster]]


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