private void testRandom(Log log, CryptoRandom.METHOD method, int nBuckets)
        {
            PreTest.Init();

            BucketCollection col  = new BucketCollection(0, 1, nBuckets);
            CryptoRandom     rand = new CryptoRandom(method, Guid.NewGuid().GetHashCode());
            int nTotal            = 1000000;

            log.WriteLine("Testing (" + nBuckets.ToString() + ") " + method.ToString());

            for (int i = 0; i < nTotal; i++)
            {
                double df = rand.NextDouble();
                col.Add(df);
            }

            string        str  = "";
            List <double> rgdf = new List <double>();

            for (int i = 0; i < nBuckets; i++)
            {
                double dfPct = col[i].Count / (double)nTotal;
                str += dfPct.ToString("P");
                str += ", ";
                rgdf.Add(dfPct);
            }

            str = str.TrimEnd(',', ' ');

            log.WriteLine(method.ToString() + " =>> " + str);

            double dfStdev = stdDev(rgdf, false);

            log.WriteLine(method.ToString() + " stdev = " + dfStdev.ToString());
        }
Example #2
0
        public void TestDataItem()
        {
            PreTest.Init();

            db.stream.DataItem di = new db.stream.DataItem(10);
            Log log = new Log("Test streaming database");

            log.EnableTrace = true;

            for (int i = 0; i < 5; i++)
            {
                bool bComplete = di.Add(i, i);
                log.CHECK(!bComplete, "Data item should not be complete.");
            }

            for (int i = 5; i < 9; i++)
            {
                bool bComplete = di.Add(i, i);
                log.CHECK(!bComplete, "Data item should not be complete.");
            }

            bool bComplete1 = di.Add(9, 9);

            log.CHECK(bComplete1, "The data should be complete.");

            double[] rgdf = di.GetData();
            log.CHECK_EQ(rgdf.Length, 10, "The data length is incorrect.");

            for (int i = 0; i < 10; i++)
            {
                log.CHECK_EQ(i, rgdf[i], "The data item at index #" + i.ToString() + " is incorrect.");
            }
        }
Example #3
0
        public void TestInitializationSimple()
        {
            PreTest.Init();

            Log log = new Log("Test streaming database");

            log.EnableTrace = true;

            IXStreamDatabase db        = new MyCaffeStreamDatabase(log);
            string           strSchema = "ConnectionCount=1;";
            string           strParam  = "Connection=TestCon;Table=TestTbl;Field=TestField;";

            strParam = Utility.Replace(strParam, ';', '|');
            strParam = Utility.Replace(strParam, '=', '~');

            strSchema += "Connection0_CustomQueryName=Test1;";
            strSchema += "Connection0_CustomQueryParam=" + strParam + ";";

            ((MyCaffeStreamDatabase)db).AddDirectQuery(new CustomQuery1());

            string strSettings = "QueryCount=5;Start=" + DateTime.Today.ToShortDateString() + ";TimeSpanInMs=60000;SegmentSize=1;MaxCount=10;";

            db.Initialize(QUERY_TYPE.SYNCHRONIZED, strSchema + strSettings);
            db.Shutdown();
        }
Example #4
0
        public void TestQueryGeneralText()
        {
            PreTest.Init();

            Log log = new Log("Test streaming database with general Text data");

            log.EnableTrace = true;

            IXStreamDatabase db = new MyCaffeStreamDatabase(log);

            try
            {
                string strSchema = "ConnectionCount=1;";

                string strDataPath = getTestPath("\\MyCaffe\\test_data\\data\\char-rnn", true);
                string strParam    = "FilePath=" + strDataPath + ";";

                strParam   = ParamPacker.Pack(strParam);
                strSchema += "Connection0_CustomQueryName=StdTextFileQuery;";
                strSchema += "Connection0_CustomQueryParam=" + strParam + ";";

                DateTime dt          = DateTime.Today;
                string   strSettings = "";
                db.Initialize(QUERY_TYPE.GENERAL, strSchema + strSettings);

                int[] rgSize = db.QuerySize();
                log.CHECK(rgSize != null, "The Query size should not be null.");
                log.CHECK_EQ(rgSize.Length, 3, "The query size should have 3 items.");
                log.CHECK_EQ(rgSize[0], 1, "The query size item 1 should be 1 for the number of files.");
                log.CHECK_EQ(rgSize[1], 1, "The query size item 0 should be 1.");
                //log.CHECK_EQ(rgSize[2], 4572882, "The query size item 2 should be 4572882 for the maximum number of characters in each of the the files.");
                log.CHECK_EQ(rgSize[2], 4740059, "The query size item 2 should be 4740059 for the maximum number of characters in each of the the files.");

                int nH     = rgSize[1];
                int nW     = rgSize[2];
                int nCount = nH * nW;

                Stopwatch sw = new Stopwatch();

                sw.Start();

                SimpleDatum sd    = db.Query(int.MaxValue);
                SimpleDatum sdEnd = db.Query(int.MaxValue);

                sw.Stop();

                double dfMs = sw.Elapsed.TotalMilliseconds;

                log.WriteLine("Total Time = " + dfMs.ToString() + " ms.");

                log.CHECK(sdEnd == null, "The last query should be null to show no more data exists.");
                //log.CHECK_EQ(sd.ItemCount, 4572882, "There should be more than one item in the data.");
                log.CHECK_EQ(sd.ItemCount, 4740059, "There should be more than one item in the data.");
                log.CHECK(!sd.IsRealData, "The data should be byte data, not real.");
            }
            finally
            {
                db.Shutdown();
            }
        }
Example #5
0
        public void TestColorMapping()
        {
            PreTest.Init();

            Log log = new Log("Test ColorMapper");

            log.EnableTrace = true;

            int         nCount = 300;
            ColorMapper clrMap = new ColorMapper(0, 1, Color.Black, Color.Red);
            double      dfVal  = 0;
            double      dfInc  = 1.0 / (double)nCount;

            for (int i = 0; i < nCount; i++)
            {
                Color  clr    = clrMap.GetColor(dfVal);
                double dfVal1 = clrMap.GetValue(clr);

                log.EXPECT_EQUAL <float>(dfVal1, dfVal, "The value at i = " + i.ToString() + " value = " + dfVal.ToString() + " does not equal value1 = " + dfVal1.ToString());

                dfVal += dfInc;
            }

            dfVal = clrMap.GetValue(Color.FromArgb(0, 130, 124));
            log.CHECK_NE(0, dfVal, "The value should not be zero.");

            dfVal = clrMap.GetValue(Color.FromArgb(255, 252, 0));
            log.CHECK_NE(0, dfVal, "The value should not be zero.");

            log.WriteLine("DONE.");
        }
Example #6
0
        public void TestQueryGeneralWAV()
        {
            PreTest.Init();

            Log log = new Log("Test streaming database with general WAV data");

            log.EnableTrace = true;

            IXStreamDatabase db = new MyCaffeStreamDatabase(log);

            try
            {
                string strSchema = "ConnectionCount=1;";

                string strDataPath = getTestPath("\\MyCaffe\\test_data\\data\\wav", true);
                string strParam    = "FilePath=" + strDataPath + ";";

                strParam   = ParamPacker.Pack(strParam);
                strSchema += "Connection0_CustomQueryName=StdWAVFileQuery;";
                strSchema += "Connection0_CustomQueryParam=" + strParam + ";";

                DateTime dt          = DateTime.Today;
                string   strSettings = "";
                db.Initialize(QUERY_TYPE.GENERAL, strSchema + strSettings);

                int[] rgSize = db.QuerySize();
                log.CHECK(rgSize != null, "The Query size should not be null.");
                log.CHECK_EQ(rgSize.Length, 3, "The query size should have 3 items.");
                log.CHECK_EQ(rgSize[0], 1, "The query size item 1 should be 1 for the number of files.");
                log.CHECK_GE(rgSize[1], 2, "The query size item 0 (the channel count) should be greater than or equal to 1.");
                log.CHECK_GE(rgSize[2], 1000, "The query size item 2 should be the number of samples in the query.");

                int nH     = rgSize[1];
                int nW     = rgSize[2];
                int nCount = nH * nW;

                Stopwatch sw = new Stopwatch();

                sw.Start();

                SimpleDatum sd    = db.Query(int.MaxValue);
                SimpleDatum sdEnd = db.Query(int.MaxValue);

                sw.Stop();

                double dfMs = sw.Elapsed.TotalMilliseconds;

                log.WriteLine("Total Time = " + dfMs.ToString() + " ms.");

                log.CHECK(sdEnd == null, "The last query should be null to show no more data exists.");
                log.CHECK_EQ(sd.ItemCount, nCount, "There should be the same number in the data as the size[1] * size[2] returned by QuerySize.");
                log.CHECK(sd.IsRealData, "The data should be real data, not byte.");
            }
            finally
            {
                db.Shutdown();
            }
        }
        public void TestIndexQuery()
        {
            PreTest.Init();
            Log log = new Log("Test Dataset Factory");

            log.EnableTrace = true;

            string         strDs   = "MNIST";
            DatasetFactory factory = new DatasetFactory();
            Stopwatch      sw      = new Stopwatch();

            try
            {
                DatasetDescriptor ds = factory.LoadDataset(strDs);
                factory.Open(ds.TrainingSource.ID);

                sw.Start();
                List <DbItem> rgItems = factory.LoadImageIndexes(false);
                sw.Stop();

                log.CHECK_EQ(rgItems.Count, ds.TrainingSource.ImageCount, "The query count should match the image count!");
                factory.Close();

                log.WriteLine("Query time = " + sw.Elapsed.TotalMilliseconds.ToString("N5") + " ms.");

                sw.Restart();

                int nMin = int.MaxValue;
                int nMax = -int.MaxValue;
                for (int i = 0; i < rgItems.Count; i++)
                {
                    nMin = Math.Min(rgItems[i].Label, nMin);
                    nMax = Math.Max(rgItems[i].Label, nMax);
                }

                List <DbItem> rgBoosted = rgItems.Where(p => p.Boost > 0).ToList();

                for (int nLabel = nMin; nLabel <= nMax; nLabel++)
                {
                    List <DbItem> rgLabel = rgItems.Where(p => p.Label == nLabel).ToList();
                }

                sw.Stop();

                log.WriteLine("Query time (profile) = " + sw.Elapsed.TotalMilliseconds.ToString("N5") + " ms.");
            }
            finally
            {
                factory.Dispose();
            }
        }
        public void TestRandom2()
        {
            PreTest.Init();

            Log log = new Log("Test CryptoRandom - 2 items");

            log.EnableTrace = true;

            int nCount = 2;

            testRandom(log, CryptoRandom.METHOD.SYSTEM, nCount);
            testRandom(log, CryptoRandom.METHOD.CRYPTO, nCount);
            testRandomIdx(log, CryptoRandom.METHOD.UNIFORM_EXACT, nCount);
        }
Example #9
0
        public Test(string strName, int nDeviceID = TestBase.DEFAULT_DEVICE_ID, EngineParameter.Engine engine = EngineParameter.Engine.DEFAULT, bool bHalf = false)
        {
            PreTest.Init();

            m_dt    = (typeof(T) == typeof(double)) ? DataType.DOUBLE : DataType.FLOAT;
            m_cuda  = GetCuda(nDeviceID);
            m_bHalf = bHalf;

            string str = name;

            if (str.Length > 0)
            {
                str += " -> ";
            }

            m_log    = GetLog(str + strName + " - type " + (typeof(T)).ToString());
            m_engine = engine;
        }
Example #10
0
        public void TestQuerySimpleTrippleStressTiming()
        {
            PreTest.Init();

            Log log = new Log("Test streaming database");

            log.EnableTrace = true;

            IXStreamDatabase db = new MyCaffeStreamDatabase(log);

            try
            {
                string strSchema = "ConnectionCount=3;";
                string strParam  = "Connection=TestCon;Table=TestTbl;Field=TestField;";

                strParam   = ParamPacker.Pack(strParam);
                strSchema += "Connection0_CustomQueryName=Test1;";
                strSchema += "Connection0_CustomQueryParam=" + strParam + ";";
                strSchema += "Connection1_CustomQueryName=Test2;";
                strSchema += "Connection1_CustomQueryParam=" + strParam + ";";
                strSchema += "Connection2_CustomQueryName=Test3;";
                strSchema += "Connection2_CustomQueryParam=" + strParam + ";";

                ((MyCaffeStreamDatabase)db).AddDirectQuery(new CustomQuery1());
                ((MyCaffeStreamDatabase)db).AddDirectQuery(new CustomQuery2());
                ((MyCaffeStreamDatabase)db).AddDirectQuery(new CustomQuery3());
                DateTime dt          = DateTime.Today;
                string   strSettings = "QueryCount=5;Start=" + dt.ToShortDateString() + ";TimeSpanInMs=60000;SegmentSize=1;MaxCount=10;";
                db.Initialize(QUERY_TYPE.SYNCHRONIZED, strSchema + strSettings);

                int[] rgSize = db.QuerySize();
                log.CHECK(rgSize != null, "The Query size should not be null.");
                log.CHECK_EQ(rgSize.Length, 3, "The query size should have 3 items.");
                log.CHECK_EQ(rgSize[0], 1, "The query size item 0 should be 1.");
                log.CHECK_EQ(rgSize[1], 6, "The query size item 1 should be 3 for three fields (q1:sync,data; q2:data).");
                log.CHECK_EQ(rgSize[2], 5, "The query size item 2 should be 5 for the number of items queried.");

                int nDataIdx = 0;
                int nH       = rgSize[1];
                int nW       = rgSize[2];
                int nCount   = nH * nW;

                List <SimpleDatum> rgSd = new List <SimpleDatum>();
                Stopwatch          sw   = new Stopwatch();
                int nIter = 10000;

                sw.Start();

                for (int i = 0; i < nIter; i++)
                {
                    rgSd.Add(db.Query(int.MaxValue));
                }

                sw.Stop();

                double dfMs         = sw.Elapsed.TotalMilliseconds;
                double dfMsPerQuery = dfMs / nIter;

                log.WriteLine("Total Time = " + dfMs.ToString() + " ms, Ave time per query = " + dfMsPerQuery.ToString() + " ms.");

                for (int i = 0; i < rgSd.Count; i++)
                {
                    SimpleDatum sd = rgSd[i];
                    log.CHECK(sd != null, "The SD returned should not be null.");
                    log.CHECK_EQ(sd.ItemCount, nCount, "There should be " + rgSize[1].ToString() + "x" + rgSize[2].ToString() + " items in the data.");
                    log.CHECK_EQ(sd.Channels, rgSize[0], "The channels are not as expected.");
                    log.CHECK_EQ(sd.Height, rgSize[1], "The height is not as expected.");
                    log.CHECK_EQ(sd.Width, rgSize[2], "The width is not as expected.");

                    for (int j = 0; j < nW; j++)
                    {
                        DateTime dt1 = Utility.ConvertTimeFromMinutes(sd.GetDataAtD(j));
                        log.CHECK(dt1 == dt, "The time sync is incorrect.");
                        dt += TimeSpan.FromMinutes(1);

                        double df1   = sd.GetDataAtD((nW * 1) + j);
                        int    nVal1 = (int)df1;
                        log.CHECK_EQ(nVal1, nDataIdx, "The data value is incorrect.");

                        double df2   = sd.GetDataAtD((nW * 2) + j);
                        int    nVal2 = (int)df2;
                        log.CHECK_EQ(nVal2, nDataIdx, "The data value is incorrect.");

                        double df3   = sd.GetDataAtD((nW * 3) + j);
                        int    nVal3 = (int)df3;
                        log.CHECK_EQ(nVal3, nDataIdx, "The data value is incorrect.");

                        double df4   = sd.GetDataAtD((nW * 4) + j);
                        int    nVal4 = (int)df4;
                        log.CHECK_EQ(nVal4, nDataIdx, "The data value is incorrect.");

                        double df5   = sd.GetDataAtD((nW * 5) + j);
                        int    nVal5 = (int)df5;
                        log.CHECK_EQ(nVal5, nDataIdx, "The data value is incorrect.");

                        nDataIdx++;
                    }
                }
            }
            finally
            {
                db.Shutdown();
            }
        }
Example #11
0
        public void TestQuerySimple()
        {
            PreTest.Init();

            Log log = new Log("Test streaming database");

            log.EnableTrace = true;

            IXStreamDatabase db = new MyCaffeStreamDatabase(log);

            try
            {
                string strSchema = "ConnectionCount=1;";
                string strParam  = "Connection=TestCon;Table=TestTbl;Field=TestField;";

                strParam   = ParamPacker.Pack(strParam);
                strSchema += "Connection0_CustomQueryName=Test1;";
                strSchema += "Connection0_CustomQueryParam=" + strParam + ";";

                ((MyCaffeStreamDatabase)db).AddDirectQuery(new CustomQuery1());

                DateTime dt          = DateTime.Today;
                string   strSettings = "QueryCount=5;Start=" + DateTime.Today.ToShortDateString() + ";TimeSpanInMs=60000;SegmentSize=1;MaxCount=10;";
                db.Initialize(QUERY_TYPE.SYNCHRONIZED, strSchema + strSettings);

                int[] rgSize = db.QuerySize();
                log.CHECK(rgSize != null, "The Query size should not be null.");
                log.CHECK_EQ(rgSize.Length, 3, "The query size should have 2 items.");
                log.CHECK_EQ(rgSize[0], 1, "The query size item 0 should be 1.");
                log.CHECK_EQ(rgSize[1], 2, "The query size item 1 should be 2 for two fields.");
                log.CHECK_EQ(rgSize[2], 5, "The query size item 2 should be 5 for the number of items queried.");

                SimpleDatum sd;
                int         nDataIdx = 0;
                int         nH       = rgSize[1];
                int         nW       = rgSize[2];
                int         nCount   = nH * nW;

                for (int i = 0; i < 2; i++)
                {
                    sd = db.Query(int.MaxValue);
                    log.CHECK(sd != null, "The SD returned should not be null.");
                    log.CHECK_EQ(sd.ItemCount, nCount, "There should be " + rgSize[1].ToString() + "x" + rgSize[2].ToString() + " items in the data.");
                    log.CHECK_EQ(sd.Channels, rgSize[0], "The channels are not as expected.");
                    log.CHECK_EQ(sd.Height, rgSize[1], "The height is not as expected.");
                    log.CHECK_EQ(sd.Width, rgSize[2], "The width is not as expected.");

                    for (int j = 0; j < nW; j++)
                    {
                        DateTime dt1 = Utility.ConvertTimeFromMinutes(sd.GetDataAtD(j));
                        log.CHECK(dt1 == dt, "The time sync is incorrect.");
                        dt += TimeSpan.FromMinutes(1);

                        double df   = sd.GetDataAtD(nW + j);
                        int    nVal = (int)df;
                        log.CHECK_EQ(nVal, nDataIdx, "The data value is incorrect.");
                        nDataIdx++;
                    }
                }
            }
            finally
            {
                db.Shutdown();
            }
        }
Example #12
0
        public void TestQuerySimpleDualDifferentEndAndReset()
        {
            PreTest.Init();

            Log log = new Log("Test streaming database");

            log.EnableTrace = true;

            IXStreamDatabase db = new MyCaffeStreamDatabase(log);

            try
            {
                string strSchema = "ConnectionCount=2;";
                string strParam1 = "Connection=TestCon;Table=TestTbl;Field=TestField;EndIdx=10;";
                string strParam2 = "Connection=TestCon;Table=TestTbl;Field=TestField;EndIdx=15;";

                strParam1  = ParamPacker.Pack(strParam1);
                strParam2  = ParamPacker.Pack(strParam2);
                strSchema += "Connection0_CustomQueryName=Test1;";
                strSchema += "Connection0_CustomQueryParam=" + strParam1 + ";";
                strSchema += "Connection1_CustomQueryName=Test2;";
                strSchema += "Connection1_CustomQueryParam=" + strParam2 + ";";

                ((MyCaffeStreamDatabase)db).AddDirectQuery(new CustomQuery1());
                ((MyCaffeStreamDatabase)db).AddDirectQuery(new CustomQuery2());
                DateTime dt          = DateTime.Today;
                string   strSettings = "QueryCount=5;Start=" + dt.ToShortDateString() + ";TimeSpanInMs=60000;SegmentSize=1;MaxCount=10;";
                db.Initialize(QUERY_TYPE.SYNCHRONIZED, strSchema + strSettings);

                int[] rgSize = db.QuerySize();
                log.CHECK(rgSize != null, "The Query size should not be null.");
                log.CHECK_EQ(rgSize.Length, 3, "The query size should have 3 items.");
                log.CHECK_EQ(rgSize[0], 1, "The query size item 0 should be 1.");
                log.CHECK_EQ(rgSize[1], 3, "The query size item 1 should be 3 for three fields (q1:sync,data; q2:data).");
                log.CHECK_EQ(rgSize[2], 5, "The query size item 2 should be 5 for the number of items queried.");

                SimpleDatum sd;
                int         nDataIdx = 0;
                int         nH       = rgSize[1];
                int         nW       = rgSize[2];
                int         nCount   = nH * nW;

                for (int i = 0; i < 6; i++)
                {
                    sd = db.Query(int.MaxValue);

                    if (i == 0 || i == 1 || i == 3 || i == 4)
                    {
                        log.CHECK(sd != null, "The SD returned should not be null.");
                        log.CHECK_EQ(sd.ItemCount, nCount, "There should be " + rgSize[1].ToString() + "x" + rgSize[2].ToString() + " items in the data.");
                        log.CHECK_EQ(sd.Channels, rgSize[0], "The channels are not as expected.");
                        log.CHECK_EQ(sd.Height, rgSize[1], "The height is not as expected.");
                        log.CHECK_EQ(sd.Width, rgSize[2], "The width is not as expected.");

                        for (int j = 0; j < nW; j++)
                        {
                            DateTime dt1 = Utility.ConvertTimeFromMinutes(sd.GetDataAtD(j));
                            log.CHECK(dt1 == dt, "The time sync is incorrect.");
                            dt += TimeSpan.FromMinutes(1);

                            double df1   = sd.GetDataAtD((nW * 1) + j);
                            int    nVal1 = (int)df1;
                            log.CHECK_EQ(nVal1, nDataIdx, "The data value is incorrect.");

                            double df2   = sd.GetDataAtD((nW * 2) + j);
                            int    nVal2 = (int)df2;
                            log.CHECK_EQ(nVal2, nDataIdx, "The data value is incorrect.");

                            nDataIdx++;
                        }
                    }
                    else
                    {
                        log.CHECK(sd == null, "Since we are past the end, the sd should be null.");
                        dt       = DateTime.Today;
                        nDataIdx = 0;
                        db.Reset(0);
                    }
                }
            }
            finally
            {
                db.Shutdown();
            }
        }
        private void testRandomIdx(Log log, CryptoRandom.METHOD method, int nBuckets)
        {
            PreTest.Init();

            BucketCollection col  = new BucketCollection(0.0, 1.0, nBuckets);
            CryptoRandom     rand = new CryptoRandom(method, Guid.NewGuid().GetHashCode());
            int nTotal            = 100000;

            log.WriteLine("Testing (" + nBuckets.ToString() + ") " + method.ToString());

            List <int>         rgIdx1           = new List <int>();
            List <List <int> > rgrgPermutations = new List <List <int> >();

            for (int i = 0; i < nTotal / nBuckets; i++)
            {
                List <int> rgPermutation = new List <int>();

                for (int j = 0; j < nBuckets; j++)
                {
                    int    nIdx  = rand.Next(nBuckets);
                    double dfPct = (double)nIdx / (double)nBuckets;

                    rgPermutation.Add(nIdx);

                    col.Add(dfPct);
                }

                rgrgPermutations.Add(rgPermutation);
            }

            string        str  = "";
            List <double> rgdf = new List <double>();

            for (int i = 0; i < nBuckets; i++)
            {
                double dfPct = col[i].Count / (double)nTotal;
                str += dfPct.ToString("P");
                str += ", ";
                rgdf.Add(dfPct);
            }

            str = str.TrimEnd(',', ' ');

            log.WriteLine(method.ToString() + " =>> " + str);

            double dfStdev = stdDev(rgdf, false);

            log.WriteLine(method.ToString() + " stdev = " + dfStdev.ToString());


            // Verify permuation uniqueness
            int       nDuplicateCount   = 0;
            int       nPermutationCount = rgrgPermutations.Count;
            Stopwatch sw = new Stopwatch();

            sw.Start();
            int nProgressIdx = 0;

            while (rgrgPermutations.Count > 1)
            {
                List <int> rgPermutation1 = rgrgPermutations[0];
                rgrgPermutations.RemoveAt(0);

                List <int> rgRemove = new List <int>();

                for (int j = 0; j < rgrgPermutations.Count; j++)
                {
                    if (compareLists(rgPermutation1, rgrgPermutations[j]))
                    {
                        nDuplicateCount++;
                        rgRemove.Add(j);
                    }
                }

                for (int j = rgRemove.Count - 1; j >= 0; j--)
                {
                    rgrgPermutations.RemoveAt(rgRemove[j]);
                }

                if (sw.Elapsed.TotalMilliseconds > 2000)
                {
                    log.Progress = (double)nProgressIdx / (double)nPermutationCount;
                    log.WriteLine("Permutation checking at " + log.Progress.ToString("P") + "...");
                    sw.Restart();
                }

                nProgressIdx++;
            }

            log.WriteLine("Out of " + nPermutationCount.ToString("N0") + " permutations, " + nDuplicateCount.ToString("N0") + " duplicates were found (" + ((double)nDuplicateCount / nPermutationCount).ToString("P") + ").");
        }