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- ~4Dgifts/toolbox/src/exampleCode/MP README
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- This tree contains examples relating to multi-processing/parallel computing
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- kernel_switch: contains an example showing how to combine mips1 and
- mips2 objects into a single mips1 and mips2 runnable
- executable through a jump table implementation.
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- timer : This subtree demonstrates the use of a high resolution timer
- of the io3 board on an r4k-based SGI system. The io3 clock
- is 16 Mhz, 32 bits. Period is ~ 268 seconds. Getitimer has
- a 100 Hz default resolution. With ftimer(1) and by changing
- FASTHZ in /usr/sysgen/master.d/kernel it is possible to
- bring the resolution up to 1800 (Power Series systems), i.e.,
- 555 microseconds. This resolution is too coarse for the
- purpose of some measurements.
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- Two sub-directories--highres and regular--containing
- contrasting Linpack 100 examples using a regular and the high
- resolution timers are shown. The Linpack 100 benchmark takes
- about .07 second to run and thus the use of a higher
- resolution timer is necessary.
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- Also included is a similar io4 timer for the challenge system.
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