Growler分布式對象和事件架構(gòu)

Growler 是一個基于 C++ 開發(fā)的分布式對象和事件架構(gòu)。支持 C++ 的對象序列化作為遠程方法調(diào)用、事件通道和 IDL 接口定義語言的一部分。

Its primary application has been in support of interactive, distributed visualization, computational steering, and concurrent visualization, but it is a general purpose system for distributed programming. Growler 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 as well as remote event broadcast, with support for low-latency/low-perturbation events via a loss-tolerant event model.

Several key aspects of growler distinguish it from existing software tools, particularly when taken together:

• A C++-based distributed object architecture, based on an Interface Definition Language, plus user-defined object serialization.

• A component-oriented framework for local and distributed components.

• A "reader-writer buffer" (rwbuffer) communication model for high-performance event channels.

• A "Signal/Selector" notification model for concurrent, event-driven programming.

• Event channels supporting "composite state representations", for synchronized access to interrelated events.

• Efficient and robust access transparency, via user-defined serialization and copy-minimizing event channels.

Growler provides the architectural underpinnings for another open source project developed within NASA: NodeMon. It was also instrumental in the development of the Concurrent Visualization pipeline described in [1]. [1] Concurrent Visualization in a Production Supercomputing Environment David Ellsworth, Bryan Green, Chris Henze, Patrick Moran, Timothy Sandstrom IEEE Transactions on Visualization and Computer Graphics. 2006.