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littlepeaks
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Question about CEP

Hi all--

I have a few questions about CEP.

1. What was the reason for limiting this study to organic materials? Is there some property that solar cells with organic materials have that inorganic solar cells don't?

2. What is the relationship to what BOINC is doing, and CHARMM and Q-Chem? I assume that when we run BOINC, it is not using one of these packages -- that these packages are used to evaluate the BOINC results??? And exactly what is BOINC determining, that gets fed to these programs?

George was curious ... .
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Re: Question about CEP

Organic compounds are generally a lot more complex, and hence more diverse, than inorganic compounds. I suspect inorganic compounds have already been studied in depth (but I could be mistaken). The properties the researchers are looking for are "cheap" and "easy to manufacture". But first, they have to find compounds with the right electrical properties.

As for your question (2) - it seems you misunderstand what BOINC is. BOINC doesn't compute anything by itself. When you run CEP, CHARMM is running on your computer (or part of it - these science suites are very large, and it may not all be needed. I don't know all the details). BOINC just gets the results back and forth, and oversees things.
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littlepeaks
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Re: Question about CEP


As for your question (2) - it seems you misunderstand what BOINC is. BOINC doesn't compute anything by itself. When you run CEP, CHARMM is running on your computer (or part of it - these science suites are very large, and it may not all be needed. I don't know all the details). BOINC just gets the results back and forth, and oversees things.


(first part) I knew that (slaps self on forehead). blushing That leads me to my second question. The CHARMM Overview seems to imply it only runs under UNIX. How did they get it to run under CEP in Windows?

And I was wondering about Q-Chem. The Q-Chem Website indicates this is a commercial application. I guess they bought (will buy) the unlimited license and wonder which category they were able to purchase it under (or was it a donation). I realize you or they may not be able to publicly answer the second half of my question.
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[Edit 3 times, last edit by littlepeaks at Dec 10, 2008 2:37:27 AM]
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Former Member
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Re: Question about CEP

The WCG techs are very, very good at their jobs. That's how. :-)

The license agreements are very complicated. That's all handled by IBM lawyers. I hadn't seen the price page you linked. Actually, the academic prices are rather affordable.

Q-Chem isn't actually running on the grid yet. Since it is a totally different application, it will be launched as phase 2 of The Clean Energy Project (probably running in parallel with phase 1). This extra effort is worthwhile because many other potential research projects can use CHARMM or Q-Chem - and WCG will have them tested and ready to go, just like with AutoDock and Rosetta.
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Re: Question about CEP

Littlepeaks,

For your first question, we are focusing on organic materials for many reasons. Among them is that studying these molecules is a relatively new field with a lot of questions still unanswered -WCG users are helping advance science!

Secondly, organic materials have promise for solar cells because they require less upfront money and energy costs for manufacturing. With this project, we're looking for molecules that have properties that will make them suitable for efficient solar cells. Chemists in lab don't have time to study as many molecules that we, with your help, can look at. smile

Didactylos is right with respect to your second question: we made agreements with the CHARMM and Q-Chem developers to grid-enable their software. We are using only very specific parts of the software suite to make the executables a reasonable size for everyone's computer.

The CEP team.
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