Hi everyone,
Thanks to a Foundational Questions Institute minigrant, I've recently been able to experiment with doing numerical computations for cosmology on graphics cards. New cards are very fast and can now be programmed (somewhat...) straightforwardly in a [q]C[/q]-like language. At the moment they only work in single precision but double precision hardware should soon be available.
My main project on them is the numerical simulation of eternal inflation and the investigation of the possible effects of volume-weighting on the typical history. I've also done a bit on the Cholesky factorization of matrices, which is of course very useful in a wide variety of contexts, not least in CMB likelihood calculations. I've been pretty impressed with the performance so far.
I've put together a website that might be of interest if anybody is thinking of doing anything similar, see here.
Steve Gratton.
Graphics Card Computing for Cosmology
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- Posts: 1
- Joined: April 26 2006
- Affiliation: IoA, Cambridge
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- Posts: 11
- Joined: September 27 2004
- Affiliation: Princeton University
Graphics Card Computing for Cosmology
A workshop on "Astro GPUs" was held in Princeton a few days ago.
You might find this link interesting: http://www.astrogpu.org/. -A.
You might find this link interesting: http://www.astrogpu.org/. -A.