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STDIOStandard Input Output
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For gcc, rather than modify the entire program, we simply replaced the C stdio library with a version that uses IO-Lite for communication over pipes.
We observe no performance benefit in this test for two reasons: (1) the computation time dominates the cost of communication and (2) only the interprocess data copying has been eliminated, but data copying between the applications and the stdio library still exists.
Interface building blocks import the ASI interface but export a standard I/O interface to the application, such as the (emulated) standard UNIX I/O system call interface and the stdio interface.
For instance, a UNIX diff application comparing two identical files runs nearly four times faster on an AIX system when using ASF instead of the AIX native stdio library.