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1 results

  • PyFAI: a Python library for high performance azimuthal integration on GPU

  • J. Kieffer, J.P. Wright
  • Journal:
    Powder Diffraction / Volume 28 / Issue S2 / September 2013
    Published online by Cambridge University Press:
    14 November 2013, pp. S339-S350

  • PyFAI is an open-source Python library for Fast Azimuthal Integration which provides 1D- and 2D-azimuthal regrouping with a clean programming interface and tools for calibration. The library is suitable for interactive use in Python. In optimising the speed of the algorithms there has been no compromise on the accuracy compared to reference software. Fast integrations are obtained by the combination of an algorithm ensuring that each pixel from the detector provides a direct contribution to the final diffraction pattern and an OpenCL implementation that can use graphics cards for acceleration. This contribution describes how the algorithms were modified to work better in parallel.