Automated Presentation of directory src/exampleCode/MP/

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README file from "MP" directory

	         ~4Dgifts/toolbox/src/exampleCode/MP README


   This tree contains examples relating to multi-processing/parallel computing


   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.

            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.

            Also included is a similar io4 timer for the challenge system.



Files of interest from "src/exampleCode/MP" directory

Documentation

Reference

Subdirectories


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