/** Simple test of spmv work with files. You should specify paths. */
@Test
public void simpleSpMVTestFile() {
try {
int size = 4;
String matrixPath = "";
String vectorPath = "";
String outputPath = "";
if (matrixPath.isEmpty() || vectorPath.isEmpty() || outputPath.isEmpty()) {
LOG.info(
"Please setup input path for vector and matrix and output path for result, "
+ "if you want to run this example");
return;
}
SpMV.main(new String[] {matrixPath, vectorPath, outputPath, "4"});
String resultPath = SpMV.getResultPath();
DenseVectorWritable result = new DenseVectorWritable();
SpMV.readFromFile(resultPath, result, conf);
double expected[] = {38, 12, 24, 11};
if (result.getSize() != size) throw new Exception("Incorrect size of output vector");
for (int i = 0; i < result.getSize(); i++)
if ((result.get(i) - expected[i]) < 0.01) expected[i] = 0;
for (int i = 0; i < expected.length; i++)
if (expected[i] != 0) throw new Exception("Result doesn't meets expectations");
} catch (Exception e) {
e.printStackTrace();
fail(e.getLocalizedMessage());
}
}
/**
* Simple test. multiplying [1 0 6 0] [2] [38] [0 4 0 0] * [3] = [12] [0 2 3 0] [6] [24] [3 0 0 5]
* [1] [11]
*/
@Test
public void simpleSpMVTest() {
HamaConfiguration conf = new HamaConfiguration();
String testDir = "/simple/";
int size = 4;
String matrixPath = baseDir + testDir + "inputMatrix";
String vectorPath = baseDir + testDir + "inputVector";
String outputPath = baseDir + testDir;
try {
if (fs.exists(new Path(baseDir))) {
fs.delete(new Path(baseDir), true);
}
// creating test matrix
HashMap<Integer, Writable> inputMatrix = new HashMap<Integer, Writable>();
SparseVectorWritable vector0 = new SparseVectorWritable();
vector0.setSize(size);
vector0.addCell(0, 1);
vector0.addCell(2, 6);
SparseVectorWritable vector1 = new SparseVectorWritable();
vector1.setSize(size);
vector1.addCell(1, 4);
SparseVectorWritable vector2 = new SparseVectorWritable();
vector2.setSize(size);
vector2.addCell(1, 2);
vector2.addCell(2, 3);
SparseVectorWritable vector3 = new SparseVectorWritable();
vector3.setSize(size);
vector3.addCell(0, 3);
vector3.addCell(3, 5);
inputMatrix.put(0, vector0);
inputMatrix.put(1, vector1);
inputMatrix.put(2, vector2);
inputMatrix.put(3, vector3);
writeMatrix(matrixPath, conf, inputMatrix);
HashMap<Integer, Writable> inputVector = new HashMap<Integer, Writable>();
DenseVectorWritable vector = new DenseVectorWritable();
vector.setSize(size);
vector.addCell(0, 2);
vector.addCell(1, 3);
vector.addCell(2, 6);
vector.addCell(3, 1);
inputVector.put(0, vector);
writeMatrix(vectorPath, conf, inputVector);
SpMV.main(new String[] {matrixPath, vectorPath, outputPath, "4"});
String resultPath = SpMV.getResultPath();
DenseVectorWritable result = new DenseVectorWritable();
SpMV.readFromFile(resultPath, result, conf);
LOG.info("result is a file: " + fs.isFile(new Path(resultPath)));
double expected[] = {38, 12, 24, 11};
if (result.getSize() != size) throw new Exception("Incorrect size of output vector");
for (int i = 0; i < result.getSize(); i++)
if ((result.get(i) - expected[i]) < 0.01) expected[i] = 0;
for (int i = 0; i < expected.length; i++)
if (expected[i] != 0) throw new Exception("Result doesn't meets expectations");
fs.delete(new Path(baseDir), true);
} catch (Exception e) {
e.printStackTrace();
fail(e.getLocalizedMessage());
} finally {
}
}