Examples with CompressionDescriptor org.nd4j.linalg.compression.CompressionDescriptor used on opensource projects

Example 11 with CompressionDescriptor

use of org.nd4j.linalg.compression.CompressionDescriptor in project nd4j by deeplearning4j.

the class CpuFlexibleThreshold method compress.

@Override
public DataBuffer compress(DataBuffer buffer) {
    INDArray temp = Nd4j.createArrayFromShapeBuffer(buffer, Nd4j.getShapeInfoProvider().createShapeInformation(new int[] { 1, (int) buffer.length() }).getFirst());
    double max = temp.amaxNumber().doubleValue();
    int cntAbs = temp.scan(Conditions.absGreaterThanOrEqual(max - (max * threshold))).intValue();
    long originalLength = buffer.length() * Nd4j.sizeOfDataType(buffer.dataType());
    int compressedLength = cntAbs + 4;
    // first 3 elements contain header
    IntPointer pointer = new IntPointer(compressedLength);
    pointer.put(0, cntAbs);
    pointer.put(1, (int) buffer.length());
    // please note, this value will be ovewritten anyway
    pointer.put(2, Float.floatToIntBits(threshold));
    pointer.put(3, 0);
    CompressionDescriptor descriptor = new CompressionDescriptor();
    // sizeOf(INT)
    descriptor.setCompressedLength(compressedLength * 4);
    descriptor.setOriginalLength(originalLength);
    descriptor.setOriginalElementSize(Nd4j.sizeOfDataType(buffer.dataType()));
    descriptor.setNumberOfElements(buffer.length());
    descriptor.setCompressionAlgorithm(getDescriptor());
    descriptor.setCompressionType(getCompressionType());
    CompressedDataBuffer cbuff = new CompressedDataBuffer(pointer, descriptor);
    Nd4j.getNDArrayFactory().convertDataEx(getBufferTypeEx(buffer), buffer.addressPointer(), DataBuffer.TypeEx.FTHRESHOLD, pointer, buffer.length());
    Nd4j.getAffinityManager().tagLocation(buffer, AffinityManager.Location.HOST);
    return cbuff;
}

Example 12 with CompressionDescriptor

use of org.nd4j.linalg.compression.CompressionDescriptor in project nd4j by deeplearning4j.

the class CpuThreshold method compress.

@Override
public DataBuffer compress(DataBuffer buffer) {
    INDArray temp = Nd4j.createArrayFromShapeBuffer(buffer, Nd4j.getShapeInfoProvider().createShapeInformation(new int[] { 1, (int) buffer.length() }).getFirst());
    MatchCondition condition = new MatchCondition(temp, Conditions.absGreaterThanOrEqual(threshold));
    int cntAbs = Nd4j.getExecutioner().exec(condition, Integer.MAX_VALUE).getInt(0);
    if (cntAbs < 2)
        return null;
    long originalLength = buffer.length() * Nd4j.sizeOfDataType(buffer.dataType());
    int compressedLength = cntAbs + 4;
    // first 3 elements contain header
    IntPointer pointer = new IntPointer(compressedLength);
    pointer.put(0, cntAbs);
    pointer.put(1, (int) buffer.length());
    pointer.put(2, Float.floatToIntBits(threshold));
    pointer.put(3, 0);
    CompressionDescriptor descriptor = new CompressionDescriptor();
    // sizeOf(INT)
    descriptor.setCompressedLength(compressedLength * 4);
    descriptor.setOriginalLength(originalLength);
    descriptor.setOriginalElementSize(Nd4j.sizeOfDataType(buffer.dataType()));
    descriptor.setNumberOfElements(buffer.length());
    descriptor.setCompressionAlgorithm(getDescriptor());
    descriptor.setCompressionType(getCompressionType());
    CompressedDataBuffer cbuff = new CompressedDataBuffer(pointer, descriptor);
    Nd4j.getNDArrayFactory().convertDataEx(getBufferTypeEx(buffer), buffer.addressPointer(), DataBuffer.TypeEx.THRESHOLD, pointer, buffer.length());
    Nd4j.getAffinityManager().tagLocation(buffer, AffinityManager.Location.HOST);
    return cbuff;
}

Example 13 with CompressionDescriptor

use of org.nd4j.linalg.compression.CompressionDescriptor in project nd4j by deeplearning4j.

the class NativeOpExecutioner method thresholdEncode.

@Override
public INDArray thresholdEncode(INDArray input, double threshold, Integer boundary) {
    MatchCondition condition = new MatchCondition(input, Conditions.absGreaterThanOrEqual(threshold));
    int cntAbs = Nd4j.getExecutioner().exec(condition, Integer.MAX_VALUE).getInt(0);
    if (cntAbs < 2)
        return null;
    if (boundary != null)
        cntAbs = Math.min(cntAbs, boundary);
    DataBuffer buffer = input.data();
    long originalLength = buffer.length() * Nd4j.sizeOfDataType(buffer.dataType());
    int compressedLength = cntAbs + 4;
    // first 3 elements contain header
    DataBuffer encodedBuffer = Nd4j.getMemoryManager().getCurrentWorkspace() == null ? Nd4j.getDataBufferFactory().createInt(4 + cntAbs, false) : Nd4j.getDataBufferFactory().createInt(4 + cntAbs, false, Nd4j.getMemoryManager().getCurrentWorkspace());
    encodedBuffer.put(0, cntAbs);
    encodedBuffer.put(1, (int) buffer.length());
    encodedBuffer.put(2, Float.floatToIntBits((float) threshold));
    // format id
    encodedBuffer.put(3, ThresholdCompression.FLEXIBLE_ENCODING);
    CompressionDescriptor descriptor = new CompressionDescriptor();
    // sizeOf(INT)
    descriptor.setCompressedLength(compressedLength * 4);
    descriptor.setOriginalLength(originalLength);
    descriptor.setOriginalElementSize(Nd4j.sizeOfDataType(buffer.dataType()));
    descriptor.setNumberOfElements(buffer.length());
    descriptor.setCompressionAlgorithm("THRESHOLD");
    descriptor.setCompressionType(CompressionType.LOSSLESS);
    // CompressedDataBuffer cbuff = new CompressedDataBuffer(pointer, descriptor);
    Nd4j.getNDArrayFactory().convertDataEx(AbstractCompressor.getBufferTypeEx(buffer), buffer.addressPointer(), DataBuffer.TypeEx.THRESHOLD, encodedBuffer.addressPointer(), buffer.length());
    Nd4j.getAffinityManager().tagLocation(buffer, AffinityManager.Location.HOST);
    return Nd4j.createArrayFromShapeBuffer(encodedBuffer, input.shapeInfoDataBuffer());
}

Example 14 with CompressionDescriptor

use of org.nd4j.linalg.compression.CompressionDescriptor in project nd4j by deeplearning4j.

the class Float16 method compressPointer.

@Override
protected CompressedDataBuffer compressPointer(DataBuffer.TypeEx srcType, Pointer srcPointer, int length, int elementSize) {
    BytePointer ptr = new BytePointer(length * 2);
    CompressionDescriptor descriptor = new CompressionDescriptor();
    descriptor.setCompressedLength(length * 2);
    descriptor.setOriginalLength(length * elementSize);
    descriptor.setOriginalElementSize(elementSize);
    descriptor.setNumberOfElements(length);
    descriptor.setCompressionAlgorithm(getDescriptor());
    descriptor.setCompressionType(getCompressionType());
    CompressedDataBuffer buffer = new CompressedDataBuffer(ptr, descriptor);
    Nd4j.getNDArrayFactory().convertDataEx(srcType, srcPointer, DataBuffer.TypeEx.FLOAT16, ptr, length);
    return buffer;
}

Example 15 with CompressionDescriptor

use of org.nd4j.linalg.compression.CompressionDescriptor in project nd4j by deeplearning4j.

the class Gzip method compress.

@Override
public DataBuffer compress(DataBuffer buffer) {
    try {
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        GZIPOutputStream gzip = new GZIPOutputStream(stream);
        DataOutputStream dos = new DataOutputStream(gzip);
        buffer.write(dos);
        dos.flush();
        dos.close();
        byte[] bytes = stream.toByteArray();
        // logger.info("Bytes: {}", Arrays.toString(bytes));
        BytePointer pointer = new BytePointer(bytes);
        CompressionDescriptor descriptor = new CompressionDescriptor(buffer, this);
        descriptor.setCompressedLength(bytes.length);
        CompressedDataBuffer result = new CompressedDataBuffer(pointer, descriptor);
        return result;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}