GP2PCF and GP2SSCF

Fast 2 point correlation functions using GPUs

December, 2012 GP2SSCF: The first shear-shear correlation function public version (V 0.2)

a code for brute-force computation of shear-shear correlation functios

October, 2012 Version 0.4 of GP2PCF code

Include improvements such as registers utilization into the kernel implementation

February, 2012 GP2PCF: The first 2 point angular correlation function public version (V 0.2)

a code for brute-force computation of 2 point angular correlation and cross-correlation functions

Current CUDA and PyCuda Version 0.4 features:

1) 2 point angular correlation function computation implemented in CUDA (auto and cross correlation)

2) The Code was updated using registers in its kernel in order to be faster.

IMPORTANT: Sometimes you can note a difference between our code to others at small angles, it could be due to two reasons:

1) k-trees or pixelitation can not reach small scales with enough accuaracy and

2) the arc-cosine calculation is not very precise for numbers really close to one.

Current CUDA version 0.2 features:

1) Shear-Shear correlation function computation implemented in CUDA

IMPORTANT: The results has been compared with athena code using its input data set, in order to compare please look at the README file.

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