  We present an implementation of the analysis of dynamic near field scattering
(NFS) data using a graphics processing unit (GPU). We introduce an optimized
data management scheme thereby limiting the number of operations required.
Overall, we reduce the processing time from hours to minutes, for typical
experimental conditions. Previously the limiting step in such experiments, the
processing time is now comparable to the data acquisition time. Our approach is
applicable to various dynamic NFS methods, including shadowgraph, Schlieren and
differential dynamic microscopy.

Data Analysis, Statistics and Probability;Soft Condensed Matter;Optics