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root/jsr166/jsr166/src/test/loops/MatrixMultiply.java

Comparing jsr166/src/test/loops/MatrixMultiply.java (file contents):
Revision 1.8 by jsr166, Thu Jan 15 18:34:19 2015 UTC vs.
Revision 1.9 by dl, Sat Sep 12 19:39:26 2015 UTC

#	Line 15 | Line 15 | public class MatrixMultiply {
15		/** for time conversion */
16		static final long NPS = (1000L * 1000 * 1000);
17
18	<	static final int DEFAULT_GRANULARITY = 32;
18	>	static final int DEFAULT_GRANULARITY = 16; // 32;
19
20		/**
21		* The quadrant size at which to stop recursing down
#	Line 30 | Line 30 | public class MatrixMultiply {
30
31		int procs = 0;
32		int n = 2048;
33	<	int runs = 5;
33	>	int runs = 32;
34		try {
35		if (args.length > 0)
36		procs = Integer.parseInt(args[0]);
#	Line 54 | Line 54 | public class MatrixMultiply {
54		return;
55		}
56
57	<	ForkJoinPool pool = (procs == 0) ? new ForkJoinPool() :
57	>	ForkJoinPool pool = (procs == 0) ? ForkJoinPool.commonPool() :
58		new ForkJoinPool(procs);
59		System.out.println("procs: " + pool.getParallelism() +
60		" n: " + n + " granularity: " + granularity +
#	Line 67 | Line 67 | public class MatrixMultiply {
67		for (int i = 0; i < runs; ++i) {
68		init(a, b, n);
69		long start = System.nanoTime();
70	<	pool.invoke(new Multiplier(a, 0, 0, b, 0, 0, c, 0, 0, n));
70	>	new Multiplier(a, 0, 0, b, 0, 0, c, 0, 0, n).invoke();
71		long time = System.nanoTime() - start;
72		double secs = ((double)time) / NPS;
73		Thread.sleep(100);
74	<	System.out.printf("\tTime: %7.3f\n", secs);
74	>	System.out.printf("Time: %7.3f ", secs);
75	>	if ((i & 3) == 3) System.out.println();
76		// check(c, n);
77		}
78		System.out.println(pool.toString());
79	<	pool.shutdown();
79	>	if (pool != ForkJoinPool.commonPool())
80	>	pool.shutdown();
81	>	Thread.sleep(100);
82		}
83
84		// To simplify checking, fill with all 1's. Answer should be all n's.

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