Growler is a general purpose, C++-based distributed object and event architecture. Though general, its primary application has been in support of collaborative visualization, computational steering, and "concurrent visualization" (the visualization of supercomputer simulations in progress). Growler's distributed object and event architecture is suitable for application to high-performance LAN environments as well the Internet. Its features include strong integration with C++, selective distributed reference counting, and efficient well-typed event channels for local and remote event broadcast. License: OSI Approved Changes:
Python bindings were added for some parts of Growler. Rotation and scaling were added for 3x3 matrices. Bugs were fixed in buffer management, mainly for infiniband. Other minor bugs were fixed.

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