001/*
002 * $Id: GroebnerBasePseudoParTest.java 5865 2018-07-20 14:35:30Z kredel $
003 */
004
005package edu.jas.gbufd;
006
007
008import java.io.IOException;
009import java.io.Reader;
010import java.io.StringReader;
011import java.util.ArrayList;
012import java.util.List;
013
014import junit.framework.Test;
015import junit.framework.TestCase;
016import junit.framework.TestSuite;
017
018
019import edu.jas.arith.BigInteger;
020import edu.jas.gb.GroebnerBaseAbstract;
021import edu.jas.poly.GenPolynomial;
022import edu.jas.poly.GenPolynomialRing;
023import edu.jas.poly.GenPolynomialTokenizer;
024import edu.jas.poly.PolynomialList;
025
026
027/**
028 * Groebner base pseudo reduction parallel tests with JUnit.
029 * @author Heinz Kredel
030 */
031
032public class GroebnerBasePseudoParTest extends TestCase {
033
034
035    /**
036     * main
037     */
038    public static void main(String[] args) {
039        junit.textui.TestRunner.run(suite());
040    }
041
042
043    /**
044     * Constructs a <CODE>GroebnerBasePseudoParTest</CODE> object.
045     * @param name String.
046     */
047    public GroebnerBasePseudoParTest(String name) {
048        super(name);
049    }
050
051
052    /**
053     * suite.
054     */
055    public static Test suite() {
056        TestSuite suite = new TestSuite(GroebnerBasePseudoParTest.class);
057        return suite;
058    }
059
060
061    GenPolynomialRing<BigInteger> fac;
062
063
064    List<GenPolynomial<BigInteger>> L;
065
066
067    PolynomialList<BigInteger> F;
068
069
070    List<GenPolynomial<BigInteger>> G;
071
072
073    GroebnerBaseAbstract<BigInteger> bb;
074
075
076    GenPolynomial<BigInteger> a;
077
078
079    GenPolynomial<BigInteger> b;
080
081
082    GenPolynomial<BigInteger> c;
083
084
085    GenPolynomial<BigInteger> d;
086
087
088    GenPolynomial<BigInteger> e;
089
090
091    int rl = 3; //4; //3; 
092
093
094    int kl = 10;
095
096
097    int ll = 7;
098
099
100    int el = 3;
101
102
103    float q = 0.2f; //0.4f
104
105
106    int threads = 2;
107
108
109    @Override
110    protected void setUp() {
111        BigInteger coeff = new BigInteger(9);
112        fac = new GenPolynomialRing<BigInteger>(coeff, rl);
113        a = b = c = d = e = null;
114        bb = new GroebnerBasePseudoParallel<BigInteger>(threads, coeff);
115    }
116
117
118    @Override
119    protected void tearDown() {
120        a = b = c = d = e = null;
121        fac = null;
122        bb.terminate();
123        bb = null;
124    }
125
126
127    /**
128     * Test parallel GBase.
129     * 
130     */
131    public void testParallelGBase() {
132
133        L = new ArrayList<GenPolynomial<BigInteger>>();
134
135        a = fac.random(kl, ll, el, q);
136        b = fac.random(kl, ll, el, q);
137        c = fac.random(kl, ll, el, q);
138        d = fac.random(kl, ll, el, q);
139        e = d; //fac.random(kl, ll, el, q );
140
141        //if ( a.isZERO() || b.isZERO() || c.isZERO() || d.isZERO() ) {
142        //   return;
143        //}
144
145        L.add(a);
146        L = bb.GB(L);
147        assertTrue("isGB( { a } )", bb.isGB(L));
148
149        L.add(b);
150        //System.out.println("L = " + L.size() );
151        L = bb.GB(L);
152        assertTrue("isGB( { a, b } )", bb.isGB(L));
153
154        L.add(c);
155        L = bb.GB(L);
156        assertTrue("isGB( { a, b, c } )", bb.isGB(L));
157
158        L.add(d);
159        L = bb.GB(L);
160        assertTrue("isGB( { a, b, c, d } )", bb.isGB(L));
161
162        L.add(e);
163        L = bb.GB(L);
164        assertTrue("isGB( { a, b, c, d, e } )", bb.isGB(L));
165    }
166
167
168    /**
169     * Test Trinks6/7 GBase.
170     * 
171     */
172    @SuppressWarnings("unchecked")
173    public void testTrinks7GBase() {
174        String exam = "Z(B,S,T,Z,P,W) L " + "( " + "( 45 P + 35 S - 165 B - 36 ), "
175                        + "( 35 P + 40 Z + 25 T - 27 S ), " + "( 15 W + 25 S P + 30 Z - 18 T - 165 B**2 ), "
176                        + "( - 9 W + 15 T P + 20 S Z ), " + "( P W + 2 T Z - 11 B**3 ), "
177                        + "( 99 W - 11 B S + 3 B**2 ), "
178                        //+ "( 10000 B**2 + 6600 B + 2673 ) "
179                        + ") ";
180        Reader source = new StringReader(exam);
181        GenPolynomialTokenizer parser = new GenPolynomialTokenizer(source);
182        try {
183            F = (PolynomialList<BigInteger>) parser.nextPolynomialSet();
184        } catch (ClassCastException e) {
185            fail("" + e);
186        } catch (IOException e) {
187            fail("" + e);
188        }
189        //System.out.println("F = " + F);
190
191        long s, t;
192        t = System.currentTimeMillis();
193        G = bb.GB(F.list);
194        t = System.currentTimeMillis() - t;
195        assertTrue("isGB( GB(Trinks7) )", bb.isGB(G));
196        assertEquals("#GB(Trinks7) == 6", 6, G.size());
197        PolynomialList<BigInteger> Gpl = new PolynomialList<BigInteger>(F.ring, G);
198        //System.out.println("G = " + Gpl);
199        assertTrue("nonsense ", t >= 0L);
200
201        GenPolynomialRing<BigInteger> ifac = F.ring;
202
203        List<GenPolynomial<BigInteger>> Gi;
204        GroebnerBasePseudoSeq<BigInteger> bbr = new GroebnerBasePseudoSeq<BigInteger>(ifac.coFac);
205        s = System.currentTimeMillis();
206        Gi = bbr.GB(F.list);
207        s = System.currentTimeMillis() - s;
208        PolynomialList<BigInteger> Gipl = new PolynomialList<BigInteger>(F.ring, Gi);
209        //System.out.println("G = " + Gpl);
210        //System.out.println("Gi = " + Gipl);
211
212        assertEquals("seqGB == parGB", Gpl, Gipl);
213        //System.out.println("time: seqGB = " + s + ", parGB = " + t);
214        assertTrue("nonsense ", s >= 0L);
215    }
216
217}