DataRush tackles multicore woes
September 15, 2008 —
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To tackle the problems associated with re-architecting programs for parallel processing, Pervasive Software made available in late August a release candidate of its data flow-based DataRush multicore library for Java.
Steve Hochschild, manager of business development for DataRush, said that Pervasive believes the solution to multicore woes is the use of data flow rather than von Neumann programming models. “It's a fascinating approach. Unlike traditional von Neumann programming, where you have a program counter and the application marches down through the code line by line, in a data flow architecture, each component is unique and independent, and is only connected to others through input and output queues,” said Hochschild.
“When a piece of data arrives at the input queue, it gets taken in and immediately processed, then pushed out through the output queue. A lot of people call this pipelining. Spreadsheets are data flow implementations. If you type a value into a cell, that cell does what it's supposed to do, then as soon as that's done, any other cell that's using that cell as an input also crunches it down, and so on.”
Originally designed to help programmers with signal processing applications, data flow has been a programming model for decades. Only now, however, are programmers beginning to see that it's a great method for overcoming parallelism problems.
How it works with Java
DataRush comes in the form of Java libraries and a runtime component that decides where each component process will live and work. Hochschild said that designing an application to take advantage of DataRush is not likely to be effective for existing applications. But for projects starting from scratch and requiring intensive operations on a single large chunk of data, the potential for saving time is phenomenal.
“You really need to look at your application in a different way,” said Hochschild about architecting for DataRush. “You look at your application and decide what each piece of data needs to change. As this record is going through the system, what has to happen? You lay out the operators, and it's all 100% Java. If you can take that time and study the application in that way, we've seen huge productivity gains from the design-time benefits.”
Related Search Term(s): Java, multicore, software development, Pervasive
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