Examples with SparseBlockMCSR org.apache.sysml.runtime.matrix.data.SparseBlockMCSR used on opensource projects

Example 11 with SparseBlockMCSR

use of org.apache.sysml.runtime.matrix.data.SparseBlockMCSR in project incubator-systemml by apache.

the class MatrixReader method createOutputMatrixBlock.

/**
 * NOTE: mallocDense controls if the output matrix blocks is fully allocated, this can be redundant
 * if binary block read and single block.
 *
 * @param rlen number of rows
 * @param clen number of columns
 * @param bclen number of columns in a block
 * @param brlen number of rows in a block
 * @param estnnz estimated number of non-zeros
 * @param mallocDense if true and not sparse, allocate dense block unsafe
 * @param mallocSparse if true and sparse, allocate sparse rows block
 * @return matrix block
 * @throws IOException if IOException occurs
 */
protected static MatrixBlock createOutputMatrixBlock(long rlen, long clen, int bclen, int brlen, long estnnz, boolean mallocDense, boolean mallocSparse) throws IOException {
    // check input dimension
    if (!OptimizerUtils.isValidCPDimensions(rlen, clen))
        throw new DMLRuntimeException("Matrix dimensions too large for CP runtime: " + rlen + " x " + clen);
    // determine target representation (sparse/dense)
    boolean sparse = MatrixBlock.evalSparseFormatInMemory(rlen, clen, estnnz);
    int numThreads = OptimizerUtils.getParallelBinaryReadParallelism();
    long numBlocks = (long) Math.ceil((double) rlen / brlen);
    // prepare result matrix block
    MatrixBlock ret = new MatrixBlock((int) rlen, (int) clen, sparse, estnnz);
    if (!sparse && mallocDense)
        ret.allocateDenseBlockUnsafe((int) rlen, (int) clen);
    else if (sparse && mallocSparse) {
        ret.allocateSparseRowsBlock();
        SparseBlock sblock = ret.getSparseBlock();
        // create synchronization points for MCSR (start row per block row)
        if (// multiple col blocks
        sblock instanceof SparseBlockMCSR && clen > bclen && clen >= 0 && bclen > 0 && rlen >= 0 && brlen > 0) {
            // adaptive change from scalar to row could cause synchronization issues
            if (numThreads <= numBlocks)
                for (int i = 0; i < rlen; i += brlen) sblock.allocate(i, Math.max((int) (estnnz / rlen), 2), (int) clen);
            else
                // allocate all rows to avoid contention
                for (int i = 0; i < rlen; i++) sblock.allocate(i, Math.max((int) (estnnz / rlen), 2), (int) clen);
        }
    }
    return ret;
}

Example 12 with SparseBlockMCSR

use of org.apache.sysml.runtime.matrix.data.SparseBlockMCSR in project incubator-systemml by apache.

the class GPUObject method copyFromHostToDevice.

void copyFromHostToDevice() throws DMLRuntimeException {
    LOG.trace("GPU : copyFromHostToDevice, on " + this + ", GPUContext=" + getGPUContext());
    long start = 0;
    if (DMLScript.STATISTICS)
        start = System.nanoTime();
    MatrixBlock tmp = mat.acquireRead();
    if (tmp.isInSparseFormat()) {
        int[] rowPtr = null;
        int[] colInd = null;
        double[] values = null;
        tmp.recomputeNonZeros();
        long nnz = tmp.getNonZeros();
        mat.getMatrixCharacteristics().setNonZeros(nnz);
        SparseBlock block = tmp.getSparseBlock();
        boolean copyToDevice = true;
        if (block == null && tmp.getNonZeros() == 0) {
            //				// Allocate empty block --> not necessary
            //				// To reproduce this, see org.apache.sysml.test.integration.applications.dml.ID3DMLTest
            //				rowPtr = new int[0];
            //				colInd = new int[0];
            //				values = new double[0];
            copyToDevice = false;
        } else if (block == null && tmp.getNonZeros() != 0) {
            throw new DMLRuntimeException("Expected CP sparse block to be not null.");
        } else {
            // CSR is the preferred format for cuSparse GEMM
            // Converts MCSR and COO to CSR
            SparseBlockCSR csrBlock = null;
            long t0 = 0;
            if (block instanceof SparseBlockCSR) {
                csrBlock = (SparseBlockCSR) block;
            } else if (block instanceof SparseBlockCOO) {
                // TODO - should we do this on the GPU using cusparse<t>coo2csr() ?
                if (DMLScript.STATISTICS)
                    t0 = System.nanoTime();
                SparseBlockCOO cooBlock = (SparseBlockCOO) block;
                csrBlock = new SparseBlockCSR(toIntExact(mat.getNumRows()), cooBlock.rowIndexes(), cooBlock.indexes(), cooBlock.values());
                if (DMLScript.STATISTICS)
                    GPUStatistics.cudaSparseConversionTime.addAndGet(System.nanoTime() - t0);
                if (DMLScript.STATISTICS)
                    GPUStatistics.cudaSparseConversionCount.incrementAndGet();
            } else if (block instanceof SparseBlockMCSR) {
                if (DMLScript.STATISTICS)
                    t0 = System.nanoTime();
                SparseBlockMCSR mcsrBlock = (SparseBlockMCSR) block;
                csrBlock = new SparseBlockCSR(mcsrBlock.getRows(), toIntExact(mcsrBlock.size()));
                if (DMLScript.STATISTICS)
                    GPUStatistics.cudaSparseConversionTime.addAndGet(System.nanoTime() - t0);
                if (DMLScript.STATISTICS)
                    GPUStatistics.cudaSparseConversionCount.incrementAndGet();
            } else {
                throw new DMLRuntimeException("Unsupported sparse matrix format for CUDA operations");
            }
            rowPtr = csrBlock.rowPointers();
            colInd = csrBlock.indexes();
            values = csrBlock.values();
        }
        allocateSparseMatrixOnDevice();
        if (copyToDevice) {
            CSRPointer.copyToDevice(getJcudaSparseMatrixPtr(), tmp.getNumRows(), tmp.getNonZeros(), rowPtr, colInd, values);
        }
    } else {
        double[] data = tmp.getDenseBlock();
        if (data == null && tmp.getSparseBlock() != null)
            throw new DMLRuntimeException("Incorrect sparsity calculation");
        else if (data == null && tmp.getNonZeros() != 0)
            throw new DMLRuntimeException("MatrixBlock is not allocated");
        else if (tmp.getNonZeros() == 0)
            data = new double[tmp.getNumRows() * tmp.getNumColumns()];
        // Copy dense block
        allocateDenseMatrixOnDevice();
        cudaMemcpy(getJcudaDenseMatrixPtr(), Pointer.to(data), getDoubleSizeOf(mat.getNumRows() * mat.getNumColumns()), cudaMemcpyHostToDevice);
    }
    mat.release();
    if (DMLScript.STATISTICS)
        GPUStatistics.cudaToDevTime.addAndGet(System.nanoTime() - start);
    if (DMLScript.STATISTICS)
        GPUStatistics.cudaToDevCount.addAndGet(1);
}