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================================= PyHO - Hybrid optimizer in Python ================================= PyHO is a prototype of an universal two-stage optimizer written in Python. This project is based on the original C++ optimizer module from `FMDT` (Flow Meter Design Tool) project. Current status -------------- - Objective function optimization with a genetic algorithm engine - Support for customized genetic operators - Support for `PyEvolve` specific `allele` operators - Second stage optimization with Levenberg-Marquardt algorithm - Optimization speedup using memoization - Parallel processing using network or local worker processes - `Local mode` with automatic worker management - `Network mode` with arbitrary number of worker nodes - Currently optimizer and worker processes need access to the same file system (passing files through the network channel is not implemented nor designed) - Reading original FMDT input file formats (coil and grid definitions) - Optimizer can be successfully launched by the `FMDT` GUI. Dependencies ------------ **PyHO has some hard dependencies**: * ``zmq`` Python package (called ``python-zmq`` in Debian based systems) - version 2.1.9 or newer is highly recommended * The `ZeroMQ` library (or ``libzmq1``) with sources (``libzmq-dev``) - again the 2.1.9+ version is preferred. If you want to use hybrid optimization mode make sure you also have: * Source distribution of BLAS (``libblas-dev``) and LAPACK (``liblapack-dev``) libraries * The `NumPy` Python library (try ``python-numpy``) PyHO also uses following Python packages: * ``Cython`` (version at least 0.16) * ``pyximport`` * ``PyEvolve`` * ``levmar`` (modified version supporting user initiated breaks) All these libraries are included in the ``libs`` directory for convenience. When present in the standard Python path, system installed versions take precedence. **A note of warning**: This project uses custom ``levmar`` package, officially available version cannot be used, as it will break during hybrid optimization. Quick start ----------- You can start the optimizer directly by launching ``run_optimizer`` Python script from the root project directory. Running it with ``--help`` option will show all available options. You can use example evaluator based on FMDT project by using ``run_bc_evaluator`` shell script. There are example coil/grid definition files located in ``assets`` directory under ``examples/fmdt/`` path. There are 32-bit Linux and 64-bit Linux precompiled binaries of `FMDT` GUI application packaged in a ``GUI`` directory. Run it by calling ``Kanal_v1`` shell script.