1 /*
2 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 package com.oracle.graal.compiler.hsail.test;
25
26 import java.util.*;
27
28 import org.junit.*;
29
30 import com.oracle.graal.compiler.hsail.test.infra.GraalKernelTester;
31
32 /**
33 * This version of NBody causes Graal to generate register spilling code.
34 */
35 public class StaticNBodySpillTest extends GraalKernelTester {
36
37 static final int bodies = 5;
38 static final float delT = .005f;
39 static final float espSqr = 1.0f;
40 static final float mass = 5f;
41 static final int width = 768;
42 static final int height = 768;
43 // Positions xy and z of bodies.
44 @Result private float[] inxyz = new float[bodies * 3];
45 // Positions xy and z of bodies.
46 @Result private float[] outxyz = new float[bodies * 3]; // positions xy and z of bodies
47 // Velocity component of x,y and z of bodies.
48 @Result private float[] invxyz = new float[bodies * 3];
49 @Result private float[] outvxyz = new float[bodies * 3];
50 static float[] seedxyz = new float[bodies * 3];
51 {
52 final float maxDist = width / 4;
53 for (int body = 0; body < (bodies * 3); body += 3) {
54 final float theta = (float) (Math.random() * Math.PI * 2);
55 final float phi = (float) (Math.random() * Math.PI * 2);
56 final float radius = (float) (Math.random() * maxDist);
57 seedxyz[body + 0] = (float) (radius * Math.cos(theta) * Math.sin(phi)) + width / 2;
58 seedxyz[body + 1] = (float) (radius * Math.sin(theta) * Math.sin(phi)) + height / 2;
59 seedxyz[body + 2] = (float) (radius * Math.cos(phi));
60 }
61 }
62
63 public static void run(float[] inxyz, float[] outxyz, float[] invxyz, float[] outvxyz, int gid) {
64 final int count = bodies * 3;
65 final int globalId = gid * 3;
66 float accx = 0.f;
67 float accy = 0.f;
68 float accz = 0.f;
69 for (int i = 0; i < count; i += 3) {
70 final float dx = inxyz[i + 0] - inxyz[globalId + 0];
71 final float dy = inxyz[i + 1] - inxyz[globalId + 1];
72 final float dz = inxyz[i + 2] - inxyz[globalId + 2];
73 final float invDist = (float) (1.0 / (Math.sqrt((dx * dx) + (dy * dy) + (dz * dz) + espSqr)));
74 accx += mass * invDist * invDist * invDist * dx;
75 accy += mass * invDist * invDist * invDist * dy;
76 accz += mass * invDist * invDist * invDist * dz;
77 }
78 accx *= delT;
79 accy *= delT;
80 accz *= delT;
81 outxyz[globalId + 0] = inxyz[globalId + 0] + (invxyz[globalId + 0] * delT) + (accx * .5f * delT);
82 outxyz[globalId + 1] = inxyz[globalId + 1] + (invxyz[globalId + 1] * delT) + (accy * .5f * delT);
83 outxyz[globalId + 2] = inxyz[globalId + 2] + (invxyz[globalId + 2] * delT) + (accz * .5f * delT);
84 outvxyz[globalId + 0] = invxyz[globalId + 0] + accx;
85 outvxyz[globalId + 1] = invxyz[globalId + 1] + accy;
86 outvxyz[globalId + 2] = invxyz[globalId + 2] + accz;
87 }
88
89 @Override
90 public void runTest() {
91 System.arraycopy(seedxyz, 0, inxyz, 0, seedxyz.length);
92 Arrays.fill(outxyz, 0f);
93 Arrays.fill(outvxyz, 0f);
94 Arrays.fill(invxyz, 0f);
95 dispatchMethodKernel(bodies, inxyz, outxyz, invxyz, outvxyz);
96 }
97
98 // Marked to only run on hardware until simulator spill bug is fixed.
99 @Test
100 public void test() {
101 testGeneratedHsail();
102 }
103
104 }