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Glen W. Mabey, Ph.D. Southwest Research Institute Signal Exploitation and Geolocation Division

Use of Python as a MATLAB Replacement for Algorithm Development and Execution in a Multi-Core Environment. Glen W. Mabey, Ph.D. Southwest Research Institute Signal Exploitation and Geolocation Division San Antonio, Texas. Brian Granger, Ph.D. Tech-X Corporation Boulder, Colorado

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Glen W. Mabey, Ph.D. Southwest Research Institute Signal Exploitation and Geolocation Division

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  1. Use of Python as a MATLAB Replacement for Algorithm Development and Execution in a Multi-Core Environment Glen W. Mabey, Ph.D. Southwest Research Institute Signal Exploitation and Geolocation Division San Antonio, Texas Brian Granger, Ph.D. Tech-X Corporation Boulder, Colorado (creator of IPython1)

  2. Requirements • Signals Intelligence algorithm development • Non-cooperative energy detection • Large data sets (½ terabyte) • Signal processing operations • Need to implement algorithms quickly yet be able to run them on large data sets • Distribute over a large number of nodes

  3. Approach • Python: a powerful scripting language • Numpy: numerical arrays for Python • Matplotlib: MATLAB-like plotting facilities • IPython1: • High-level parallel/distributed computing in Python • Supports many styles of parallelism • Fully asynchronous model with asynchronous exception propagation over the network

  4. Results • Input I/O bottleneck addressed using NFS • Output I/O logs to database but also returns intermediate results to client • Wideband recordings processed on 10-dual-dual Xeon blades (40 cores) • 2,653 lines of code • Up to 30x speedup

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