Why does gpvdm exist?

Mankind is facing an existential crisis, by burning fossil fuels we are releasing ~9.795 gigatonnes of CO2 per year, and thus we are steadily changing the composition of Earth's atmosphere. Since 1960, CO2 in the atmosphere has risen by around 30%., this is making our home Earth a more difficult place to live on. As a society we have to reverse this trend if we want to survive. Thin film devices such as solar cells and OLEDs offer a viable way to reduce our CO2 emissions, either by providing low carbon electricity, or providing an efficient way to use the energy once generated. It is therefore important that technologies based on thin film devices continue to be developed and suceed. By developing and releasing gpvdm, I hope, I am enabling scientists throughout the world to understand these devices a little bit better, which I hope will contribute in a very small way to solving our climate crisis.

I wish gpvdm had feature X so that I could use it to do Y - what can I do about that?

Send me an e-mail tell me about the feature you need. Maybe we can collaborate by writing a paper together - it could be fun. :) I am always very keen to hear from experimentalists with exciting data who want to write papers together.

Is there a road map for gpvdm?

No not really, I add features as and when I need them or my collaborators need them. If I get free time then I add features which nobody has asked for but I think are interesting to write. If gpvdm does not do what you want it to do then send me a mail, let's collaborate it it could be fun!

There is this really annoying bug which will not go away what can I do about it?

Send me an e-mail, I will do my best to fix it.

Should I write as gpvdm or GPVDM?

Gpvdm is a unix command, and unix has a case sensitive file system, therefore gpvdm should be written in lower case. Except at the beginning of a sentence, where it is OK to capitalize it.

Why is www.gpvdm.com blocked in Iran and how do I get around this?

A1: I don't know. A2: Replace https links with http, I think they don't like encryption being used on web traffic. If you experience problems accessing the gpvdm webpage in your area of the world, drop me an e-mail, I will do my best to make it accessible to you.

How often are updates to gpvdm released?

At least every month, keep your eye on the news feed but sometimes daily - depending on what the people I work with need. I always recommend using the latest version of gpvdm, as I am always fixing bugs and improving it.

Does gpvdm come with any type of warranty, is it fit for any particular purpose?

No, not at all. I run this project in my free time, so use it at your own risk. Having said that, I use gpvdm for my own work so I always do my best to ensure the latest version is as good as it can be. In my view, it is much better than many of the competition.

I really like what you have done with gpvdm, are you available for consultancy work?

Yes absolutely, send me an e-mail.

You ignored my e-mail, what should I do?

I get about 100 e-mails per day, if I don't answer, just resend your e-mail until I answer :).

Should I use anything but the latest version of gpvdm?

No. I highly recommenced you always upgrade to the latest version of gpvdm. I do not support old versions.

Can I publish papers with gpvdm and use the results in industrial/academic enviroments?

Yes, do what you want with the results from gpvdm. If you are feeling generous think about inviting me onto the paper ;).

I get the error: Can not decode archive data

You have deleted gpvdm_local in your home directory, gpvdm_local is needed for gpvdm to run.