Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
org.nd4j.linalg.cpu.nativecpu.CpuNDArrayFactory Maven / Gradle / Ivy
/*
*
* * Copyright 2015 Skymind,Inc.
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
*
*
*/
package org.nd4j.linalg.cpu.nativecpu;
import org.apache.commons.math3.util.Pair;
import org.bytedeco.javacpp.*;
import org.nd4j.linalg.api.buffer.DataBuffer;
import org.nd4j.linalg.api.buffer.DoubleBuffer;
import org.nd4j.linalg.api.buffer.FloatBuffer;
import org.nd4j.linalg.api.complex.IComplexDouble;
import org.nd4j.linalg.api.complex.IComplexFloat;
import org.nd4j.linalg.api.complex.IComplexNDArray;
import org.nd4j.linalg.api.complex.IComplexNumber;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.shape.Shape;
import org.nd4j.linalg.cache.TADManager;
import org.nd4j.linalg.compression.CompressedDataBuffer;
import org.nd4j.linalg.compression.CompressionDescriptor;
import org.nd4j.linalg.compression.CompressionType;
import org.nd4j.linalg.cpu.nativecpu.blas.CpuLapack;
import org.nd4j.linalg.cpu.nativecpu.ops.NativeOpExecutioner;
import org.nd4j.linalg.factory.BaseNDArrayFactory;
import org.nd4j.linalg.factory.Nd4j;
import org.nd4j.linalg.cpu.nativecpu.blas.CpuLevel1;
import org.nd4j.linalg.cpu.nativecpu.blas.CpuLevel2;
import org.nd4j.linalg.cpu.nativecpu.blas.CpuLevel3;
import org.nd4j.linalg.cpu.nativecpu.complex.ComplexDouble;
import org.nd4j.linalg.cpu.nativecpu.complex.ComplexFloat;
import org.nd4j.linalg.cpu.nativecpu.complex.ComplexNDArray;
import org.nd4j.linalg.util.ArrayUtil;
import org.nd4j.nativeblas.NativeOps;
import org.nd4j.nativeblas.NativeOpsHolder;
import java.util.*;
/**
* Jblas NDArray Factory
*
* @author Adam Gibson
*/
public class CpuNDArrayFactory extends BaseNDArrayFactory {
private NativeOps nativeOps = NativeOpsHolder.getInstance().getDeviceNativeOps();
public CpuNDArrayFactory() {
}
static {
//invoke the override
Nd4j.getBlasWrapper();
}
public CpuNDArrayFactory(DataBuffer.Type dtype, Character order) {
super(dtype, order);
}
public CpuNDArrayFactory(DataBuffer.Type dtype, char order) {
super(dtype, order);
}
@Override
public void createLevel1() {
level1 = new CpuLevel1();
}
@Override
public void createLevel2() {
level2 = new CpuLevel2();
}
@Override
public void createLevel3() {
level3 = new CpuLevel3();
}
@Override
public void createLapack() {
lapack = new CpuLapack();
}
@Override
public INDArray create(int[] shape, DataBuffer buffer) {
return new NDArray(shape, buffer);
}
/**
* Create float
*
* @param real real component
* @param imag imag component
* @return
*/
@Override
public IComplexFloat createFloat(float real, float imag) {
return new ComplexFloat(real, imag);
}
/**
* Create an instance of a complex double
*
* @param real the real component
* @param imag the imaginary component
* @return a new imaginary double with the specified real and imaginary components
*/
@Override
public IComplexDouble createDouble(double real, double imag) {
return new ComplexDouble(real, imag);
}
/**
* Create an ndarray with the given data layout
*
* @param data the data to create the ndarray with
* @return the ndarray with the given data layout
*/
@Override
public INDArray create(double[][] data) {
return new NDArray(data);
}
@Override
public INDArray create(double[][] data, char ordering) {
return new NDArray(data,ordering);
}
/**
* Create a complex ndarray from the passed in indarray
*
* @param arr the arr to wrap
* @return the complex ndarray with the specified ndarray as the
* real components
*/
@Override
public IComplexNDArray createComplex(INDArray arr) {
return new ComplexNDArray(arr);
}
/**
* Create a complex ndarray from the passed in indarray
*
* @param data the data to wrap
* @param shape
* @return the complex ndarray with the specified ndarray as the
* real components
*/
@Override
public IComplexNDArray createComplex(IComplexNumber[] data, int[] shape) {
return new ComplexNDArray(data, shape);
}
/**
* Create a complex ndarray from the passed in indarray
*
* @param arrs the arr to wrap
* @param shape
* @return the complex ndarray with the specified ndarray as the
* real components
*/
@Override
public IComplexNDArray createComplex(List arrs, int[] shape) {
return new ComplexNDArray(arrs, shape);
}
@Override
public INDArray create(DataBuffer data) {
return new NDArray(data);
}
@Override
public IComplexNDArray createComplex(DataBuffer data) {
return new ComplexNDArray(data);
}
@Override
public IComplexNDArray createComplex(DataBuffer data, int rows, int columns, int[] stride, int offset) {
return new ComplexNDArray(data, new int[]{rows, columns}, stride, offset);
}
@Override
public INDArray create(DataBuffer data, int rows, int columns, int[] stride, int offset) {
return new NDArray(data, new int[]{rows, columns}, stride, offset);
}
@Override
public IComplexNDArray createComplex(DataBuffer data, int[] shape, int[] stride, int offset) {
return new ComplexNDArray(data, shape, stride, offset);
}
@Override
public IComplexNDArray createComplex(IComplexNumber[] data, int[] shape, int[] stride, int offset) {
return createComplex(data, shape, stride, offset, order());
}
@Override
public IComplexNDArray createComplex(IComplexNumber[] data, int[] shape, int[] stride, int offset, char ordering) {
return new ComplexNDArray(data, shape, stride, offset, ordering);
}
@Override
public IComplexNDArray createComplex(IComplexNumber[] data, int[] shape, int[] stride, char ordering) {
return new ComplexNDArray(data, shape, stride, 0, ordering);
}
@Override
public IComplexNDArray createComplex(IComplexNumber[] data, int[] shape, int offset, char ordering) {
return createComplex(data, shape, Nd4j.getComplexStrides(shape), offset, ordering);
}
@Override
public IComplexNDArray createComplex(IComplexNumber[] data, int[] shape, char ordering) {
return createComplex(data, shape, Nd4j.getComplexStrides(shape), 0, ordering);
}
/**
* Creates a complex ndarray with the specified shape
*
* @param data the data to use with the ndarray
* @param shape the shape of the ndarray
* @param stride the stride for the ndarray
* @param offset the offset of the ndarray
* @return the instance
*/
@Override
public IComplexNDArray createComplex(float[] data, int[] shape, int[] stride, int offset) {
return new ComplexNDArray(data, shape, stride, offset);
}
@Override
public INDArray create(int[] shape, char ordering) {
return new NDArray(shape, Nd4j.getStrides(shape, ordering), 0, ordering);
}
@Override
public INDArray createUninitialized(int[] shape, char ordering){
return new NDArray(shape, Nd4j.getStrides(shape, ordering), 0, ordering, false);
}
@Override
public INDArray create(DataBuffer data, int[] newShape, int[] newStride, int offset, char ordering) {
return new NDArray(data, newShape, newStride, offset, ordering);
}
@Override
public IComplexNDArray createComplex(DataBuffer data, int[] newDims, int[] newStrides, int offset, char ordering) {
return new ComplexNDArray(data, newDims, newStrides, offset, ordering);
}
@Override
public IComplexNDArray createComplex(float[] data, Character order) {
return new ComplexNDArray(data, order);
}
@Override
public INDArray create(float[] data, int[] shape, int offset, Character order) {
return new NDArray(data, shape, offset, order);
}
@Override
public INDArray create(float[] data, int rows, int columns, int[] stride, int offset, char ordering) {
return new NDArray(data, new int[]{rows, columns}, stride, offset, ordering);
}
@Override
public INDArray create(double[] data, int[] shape, char ordering) {
return new NDArray(Nd4j.createBuffer(data), shape, ordering);
}
@Override
public INDArray create(List list, int[] shape, char ordering) {
return new NDArray(list, shape, ordering);
}
@Override
public INDArray create(double[] data, int[] shape, int offset) {
return new NDArray(Nd4j.createBuffer(data), shape, offset);
}
@Override
public INDArray create(double[] data, int[] shape, int[] stride, int offset, char ordering) {
return new NDArray(Nd4j.createBuffer(data), shape, stride, offset, ordering);
}
/**
* Creates an ndarray with the specified shape
*
* @param data
* @param shape the shape of the ndarray
* @param stride the stride for the ndarray
* @param offset the offset of the ndarray
* @return the instance
*/
@Override
public INDArray create(float[] data, int[] shape, int[] stride, int offset) {
return new NDArray(data, shape, stride, offset);
}
/**
* Creates a complex ndarray with the specified shape
*
* @param data
* @param shape the shape of the ndarray
* @param stride the stride for the ndarray
* @param offset the offset of the ndarray
* @return the instance
*/
@Override
public IComplexNDArray createComplex(double[] data, int[] shape, int[] stride, int offset) {
return new ComplexNDArray(Nd4j.createBuffer(data), shape, stride, offset);
}
/**
* Creates an ndarray with the specified shape
*
* @param data
* @param shape the shape of the ndarray
* @param stride the stride for the ndarray
* @param offset the offset of the ndarray
* @return the instance
*/
@Override
public INDArray create(double[] data, int[] shape, int[] stride, int offset) {
return new NDArray(data, shape, stride, offset);
}
@Override
public INDArray create(DataBuffer data, int[] shape) {
return new NDArray(data, shape);
}
@Override
public IComplexNDArray createComplex(DataBuffer data, int[] shape) {
return new ComplexNDArray(data, shape);
}
@Override
public IComplexNDArray createComplex(DataBuffer data, int[] shape, int[] stride) {
return new ComplexNDArray(data, shape, stride);
}
@Override
public INDArray create(DataBuffer data, int[] shape, int[] stride, int offset) {
return new NDArray(data, shape, stride, offset, Nd4j.order());
}
/**
* Creates an ndarray with the specified shape
*
* @param list
* @param shape the shape of the ndarray
* @return the instance
*/
@Override
public INDArray create(List list, int[] shape) {
return new NDArray(list, shape, Nd4j.getStrides(shape));
}
/**
* Create a complex ndarray with the given data
*
* @param data the data to use with tne ndarray
* @param shape the shape of the ndarray
* @param stride the stride for the ndarray
* @param offset the offset of the ndarray
* @param ordering the ordering for the ndarray
* @return the created complex ndarray
*/
@Override
public IComplexNDArray createComplex(double[] data, int[] shape, int[] stride, int offset, char ordering) {
return new ComplexNDArray(ArrayUtil.floatCopyOf(data), shape, stride, offset, ordering);
}
/**
* @param data
* @param shape
* @param offset
* @param ordering
* @return
*/
@Override
public IComplexNDArray createComplex(double[] data, int[] shape, int offset, char ordering) {
return new ComplexNDArray(ArrayUtil.floatCopyOf(data), shape, offset, ordering);
}
@Override
public IComplexNDArray createComplex(DataBuffer buffer, int[] shape, int offset, char ordering) {
return new ComplexNDArray(buffer, shape, Nd4j.getComplexStrides(shape), offset, ordering);
}
/**
* @param data
* @param shape
* @param offset
* @return
*/
@Override
public IComplexNDArray createComplex(double[] data, int[] shape, int offset) {
return new ComplexNDArray(ArrayUtil.floatCopyOf(data), shape, offset);
}
@Override
public IComplexNDArray createComplex(DataBuffer buffer, int[] shape, int offset) {
return new ComplexNDArray(buffer, shape, Nd4j.getComplexStrides(shape), offset, Nd4j.order());
}
/**
* Create a complex ndarray with the given data
*
* @param data the data to use with tne ndarray
* @param shape the shape of the ndarray
* @param stride the stride for the ndarray
* @param offset the offset of the ndarray
* @param ordering the ordering for the ndarray
* @return the created complex ndarray
*/
@Override
public IComplexNDArray createComplex(float[] data, int[] shape, int[] stride, int offset, char ordering) {
return new ComplexNDArray(data, shape, stride, offset, ordering);
}
@Override
public INDArray create(float[][] floats) {
return new NDArray(floats);
}
@Override
public INDArray create(float[][] data, char ordering) {
return new NDArray(data,ordering);
}
@Override
public IComplexNDArray createComplex(float[] dim) {
return new ComplexNDArray(dim);
}
@Override
public INDArray create(float[] data, int[] shape, int[] stride, int offset, char ordering) {
return new NDArray(data, shape, stride, offset, ordering);
}
@Override
public INDArray create(DataBuffer buffer, int[] shape, int offset) {
return new NDArray(buffer, shape, Nd4j.getStrides(shape), offset);
}
/**
* @param data
* @param shape
* @param offset
* @param ordering
* @return
*/
@Override
public IComplexNDArray createComplex(float[] data, int[] shape, int offset, char ordering) {
return new ComplexNDArray(data, shape, Nd4j.getComplexStrides(shape, ordering), offset, ordering);
}
/**
* @param data
* @param shape
* @param offset
* @return
*/
@Override
public IComplexNDArray createComplex(float[] data, int[] shape, int offset) {
return new ComplexNDArray(data, shape, offset);
}
@Override
public INDArray create(float[] data, int[] shape, int offset) {
return new NDArray(data, shape, offset);
}
@Override
public INDArray toFlattened(char order, Collection matrices) {
int length = 0;
for (INDArray m : matrices)
length += m.length();
INDArray ret = Nd4j.create(new int[]{1,length},order);
int linearIndex = 0;
PointerPointer dummy = new PointerPointer(new Pointer[] {null});
for(INDArray m : matrices) {
Nd4j.getCompressor().autoDecompress(m);
if(m.ordering() == order && m.data().allocationMode() == DataBuffer.AllocationMode.HEAP
&& Shape.strideDescendingCAscendingF(m) && Shape.isContiguousInBuffer(m) ) {
//Can do array copy
int retFrom = linearIndex;
int mFrom = m.offset();
Object arr = m.data().array();
if(arr instanceof float[]) {
float[] mData = (float[]) arr;
float[] retData = (float[])ret.data().array();
System.arraycopy(mData,mFrom,retData,retFrom,m.length());
}
else {
double[] mData = (double[])arr;
double[] retData = (double[])ret.data().array();
System.arraycopy(mData,mFrom,retData,retFrom,m.length());
}
linearIndex += m.length();
} else {
if(m.data().dataType() == DataBuffer.Type.DOUBLE) {
nativeOps.flattenDouble(
dummy,
linearIndex,
order,
(DoublePointer)ret.data().addressPointer(),
(IntPointer)ret.shapeInfoDataBuffer().addressPointer(),
(DoublePointer)m.data().addressPointer(),
(IntPointer)m.shapeInfoDataBuffer().addressPointer());
}
else if(m.data().dataType() == DataBuffer.Type.FLOAT) {
nativeOps.flattenFloat(
dummy,
linearIndex,
order,
(FloatPointer)ret.data().addressPointer(),
(IntPointer)ret.shapeInfoDataBuffer().addressPointer(),
(FloatPointer)m.data().addressPointer(),
(IntPointer)m.shapeInfoDataBuffer().addressPointer());
}
else {
throw new UnsupportedOperationException("Illegal data type for copy");
}
//Works for all cases...
/* NdIndexIterator iter = new NdIndexIterator(order, m.shape());
while (iter.hasNext()) {
ret.putScalar(linearIndex++, m.getDouble(iter.next()));
}*/
linearIndex += m.length();
}
}
return ret;
}
/**
* concatenate ndarrays along a dimension
*
* @param dimension the dimension to concatenate along
* @param toConcat the ndarrays to concatenate
* @return the concatenate ndarrays
*/
@Override
public INDArray concat(int dimension, INDArray... toConcat) {
if (toConcat.length == 1)
return toConcat[0];
PointerPointer shapeInfoPointers = new PointerPointer(toConcat.length);
PointerPointer dataPointers = new PointerPointer(toConcat.length);
int sumAlongDim = 0;
int[] outputShape = ArrayUtil.copy(toConcat[0].shape());
for(int i = 0; i < toConcat.length; i++) {
if (toConcat[i].isCompressed())
Nd4j.getCompressor().decompressi(toConcat[i]);
shapeInfoPointers.put(i, toConcat[i].shapeInfoDataBuffer().addressPointer());
dataPointers.put(i, toConcat[i].data().addressPointer());
sumAlongDim += toConcat[i].size(dimension);
for(int j = 0; j < toConcat[i].rank(); j++)
if(j != dimension && toConcat[i].size(j) != outputShape[j]) {
throw new IllegalArgumentException("Illegal concatneation at array " + i + " and shape element " + j);
}
}
outputShape[dimension] = sumAlongDim;
PointerPointer dummy = new PointerPointer(new Pointer[] {null});
INDArray ret = Nd4j.createUninitialized(outputShape,Nd4j.order());
if(ret.data().dataType() == DataBuffer.Type.DOUBLE) {
nativeOps.concatDouble(
dummy,
dimension,
toConcat.length,
dataPointers,
shapeInfoPointers,
(DoublePointer)ret.data().addressPointer(),
(IntPointer)ret.shapeInfoDataBuffer().addressPointer(),
new PointerPointer(new Pointer[] {null}),
new PointerPointer(new Pointer[] {null})
);
}
else {
nativeOps.concatFloat(
dummy,
dimension,
toConcat.length,
dataPointers,
shapeInfoPointers,
(FloatPointer)ret.data().addressPointer(),
(IntPointer)ret.shapeInfoDataBuffer().addressPointer(),
new PointerPointer(new Pointer[] {null}),
new PointerPointer(new Pointer[] {null})
);
}
return ret;
// return super.concat(dimension,toConcat);
}
/**
* This method produces concatenated array, that consist from tensors, fetched from source array, against some dimension and specified indexes
*
* @param source source tensor
* @param sourceDimension dimension of source tensor
* @param indexes indexes from source array
* @return
*/
@Override
public INDArray pullRows(INDArray source, int sourceDimension, int[] indexes) {
return pullRows(source, sourceDimension, indexes, Nd4j.order());
}
/**
* This method produces concatenated array, that consist from tensors, fetched from source array, against some dimension and specified indexes
*
* @param source source tensor
* @param sourceDimension dimension of source tensor
* @param indexes indexes from source array
* @return
*/
@Override
public INDArray pullRows(INDArray source, int sourceDimension, int[] indexes, char order) {
if (indexes == null || indexes.length < 1)
throw new IllegalStateException("Indexes can't be null or zero-length");
int[] shape = null;
if (sourceDimension == 1)
shape = new int[] {indexes.length, source.shape()[sourceDimension]};
else if (sourceDimension == 0)
shape = new int[] {source.shape()[sourceDimension], indexes.length};
else
throw new UnsupportedOperationException("2D input is expected");
INDArray ret = Nd4j.createUninitialized(shape, order);
Nd4j.getCompressor().autoDecompress(source);
PointerPointer dummy = new PointerPointer(new Pointer[] {null});
TADManager tadManager = ((NativeOpExecutioner) Nd4j.getExecutioner()).getTadManager();
Pair tadBuffers = tadManager.getTADOnlyShapeInfo(source, new int[] {sourceDimension});
Pair zTadBuffers = tadManager.getTADOnlyShapeInfo(ret, new int[] {sourceDimension});
Pointer hostTadShapeInfo = tadBuffers.getFirst().addressPointer();
Pointer zTadShapeInfo = zTadBuffers.getFirst().addressPointer();
IntPointer pIndex = new IntPointer(indexes);
DataBuffer offsets = tadBuffers.getSecond();
Pointer hostTadOffsets = offsets == null ? null : offsets.addressPointer();
DataBuffer zOffsets = zTadBuffers.getSecond();
Pointer zTadOffsets = zOffsets == null ? null : zOffsets.addressPointer();
if(ret.data().dataType() == DataBuffer.Type.DOUBLE) {
nativeOps.pullRowsDouble(
dummy,
(DoublePointer)source.data().addressPointer(),
(IntPointer)source.shapeInfoDataBuffer().addressPointer(),
(DoublePointer)ret.data().addressPointer(),
(IntPointer)ret.shapeInfoDataBuffer().addressPointer(),
indexes.length,
pIndex,
(IntPointer)hostTadShapeInfo,
(IntPointer)hostTadOffsets,
(IntPointer) zTadShapeInfo,
(IntPointer) zTadOffsets
);
}
else if (ret.data().dataType() == DataBuffer.Type.FLOAT){
nativeOps.pullRowsFloat(
dummy,
(FloatPointer)source.data().addressPointer(),
(IntPointer)source.shapeInfoDataBuffer().addressPointer(),
(FloatPointer)ret.data().addressPointer(),
(IntPointer)ret.shapeInfoDataBuffer().addressPointer(),
indexes.length,
pIndex,
(IntPointer)hostTadShapeInfo,
(IntPointer)hostTadOffsets,
(IntPointer) zTadShapeInfo,
(IntPointer) zTadOffsets
);
} else {
nativeOps.pullRowsHalf(
dummy,
(ShortPointer)source.data().addressPointer(),
(IntPointer)source.shapeInfoDataBuffer().addressPointer(),
(ShortPointer)ret.data().addressPointer(),
(IntPointer)ret.shapeInfoDataBuffer().addressPointer(),
indexes.length,
pIndex,
(IntPointer)hostTadShapeInfo,
(IntPointer)hostTadOffsets,
(IntPointer) zTadShapeInfo,
(IntPointer) zTadOffsets
);
}
return ret;
}
/**
* This method averages input arrays, and returns averaged array
*
* @param target
* @param arrays
* @return
*/
@Override
public INDArray average(INDArray target, INDArray[] arrays) {
if (arrays == null || arrays.length == 0)
throw new RuntimeException("Input arrays are missing");
if (arrays.length == 1)
return target.assign(arrays[0]);
long len = target.lengthLong();
PointerPointer dataPointers = new PointerPointer(arrays.length);
for (int i = 0; i < arrays.length; i++) {
Nd4j.getCompressor().autoDecompress(arrays[i]);
if (arrays[i].lengthLong() != len)
throw new RuntimeException("All arrays should have equal length for averaging");
dataPointers.put(i,arrays[i].data().addressPointer());
}
if(target.data().dataType() == DataBuffer.Type.DOUBLE) {
nativeOps.averageDouble(null, dataPointers, (DoublePointer)target.data().addressPointer(), arrays.length, len, true);
} else if (target.data().dataType() == DataBuffer.Type.FLOAT){
nativeOps.averageFloat(null, dataPointers, (FloatPointer)target.data().addressPointer(), arrays.length, len, true);
} else {
nativeOps.averageHalf(null, dataPointers, (ShortPointer)target.data().addressPointer(), arrays.length, len, true);
}
return target;
}
/**
* This method averages input arrays, and returns averaged array
*
* @param target
* @param arrays
* @return
*/
@Override
public INDArray average(INDArray target, Collection arrays) {
return average(target, arrays.toArray(new INDArray[0]));
}
@Override
public INDArray average(INDArray[] arrays) {
if (arrays == null || arrays.length == 0)
throw new RuntimeException("Input arrays are missing");
INDArray ret = Nd4j.createUninitialized(arrays[0].shape(), arrays[0].ordering());
return average(ret, arrays);
}
@Override
public INDArray average(Collection arrays) {
return average(arrays.toArray(new INDArray[0]));
}
/**
* In place shuffle of an ndarray
* along a specified set of dimensions
*
* @param array the ndarray to shuffle
* @param dimension the dimension to do the shuffle
* @return
*/
@Override
public void shuffle(INDArray array, Random rnd, int... dimension) {
shuffle(Collections.singletonList(array), rnd, dimension);
}
/**
* Symmetric in place shuffle of an ndarray
* along a specified set of dimensions. All arrays
*
* @param array the ndarray to shuffle
* @param dimension the dimension to do the shuffle
* @return
*/
@Override
public void shuffle(Collection array, Random rnd, int... dimension) {
shuffle(new ArrayList(array), rnd, Collections.singletonList(dimension));
}
/**
* Symmetric in place shuffle of an ndarray
* along a specified set of dimensions. Each array in list should have it's own dimension at the same index of dimensions array
*
* @param arrays the ndarrays to shuffle
* @param dimensions the dimensions to do the shuffle
* @return
*/
@Override
public void shuffle(List arrays, Random rnd, List dimensions) {
if (dimensions == null || dimensions.size() == 0)
throw new RuntimeException("Dimension can't be null or 0-length");
if (arrays == null || arrays.size() ==0)
throw new RuntimeException("No input arrays provided");
if (dimensions.size() > 1 && arrays.size() != dimensions.size())
throw new IllegalStateException("Number of dimensions do not match number of arrays to shuffle");
int tadLength = 1;
for (int i = 0; i < dimensions.get(0).length; i++) {
tadLength *= arrays.get(0).shape()[dimensions.get(0)[i]];
}
int numTads = arrays.get(0).length() / tadLength;
int[] map = ArrayUtil.buildInterleavedVector(rnd, numTads);
PointerPointer dataPointers = new PointerPointer(arrays.size());
PointerPointer shapePointers = new PointerPointer(arrays.size());
PointerPointer tadPointers = new PointerPointer(arrays.size());
PointerPointer offsetPointers = new PointerPointer(arrays.size());
PointerPointer dummy = new PointerPointer(new Pointer[] {null});
List> list = new ArrayList<>();
TADManager tadManager = ((NativeOpExecutioner) Nd4j.getExecutioner()).getTadManager();
IntPointer ptrMap = new IntPointer(map);
long[] ptrs = new long[arrays.size()];
for (int i = 0; i < arrays.size(); i++) {
INDArray array = arrays.get(i);
Nd4j.getCompressor().autoDecompress(array);
int[] dimension = dimensions.size() > 1 ? dimensions.get(i) : dimensions.get(0);
Pair tadBuffers = tadManager.getTADOnlyShapeInfo(array, dimension);
list.add(tadBuffers);
Pointer hostTadShapeInfo = tadBuffers.getFirst().addressPointer();
DataBuffer offsets = tadBuffers.getSecond();
if (offsets == null)
throw new IllegalStateException("Offsets for shuffle can't be null");
dataPointers.put(i, array.data().addressPointer());
shapePointers.put(i, array.shapeInfoDataBuffer().addressPointer());
offsetPointers.put(i, offsets.addressPointer());
tadPointers.put(i, tadBuffers.getFirst().addressPointer());
}
if (Nd4j.dataType() == DataBuffer.Type.DOUBLE) {
nativeOps.shuffleDouble(
dummy,
dataPointers,
shapePointers,
dataPointers,
shapePointers,
arrays.size(),
ptrMap,
tadPointers,
offsetPointers
);
} else if (Nd4j.dataType() == DataBuffer.Type.FLOAT) {
nativeOps.shuffleFloat(
dummy,
dataPointers,
shapePointers,
dataPointers,
shapePointers,
arrays.size(),
ptrMap,
tadPointers,
offsetPointers
);
} else {
// HALFs
}
dataPointers.address();
shapePointers.address();
tadPointers.address();
offsetPointers.address();
}
/**
* This method converts Half-precision databuffer to current dType buffer.
*
* @param buffer
* @return
*/
/*
@Override
public DataBuffer restoreFromHalfs(DataBuffer buffer) {
if (buffer.dataType() != DataBuffer.Type.COMPRESSED)
throw new IllegalStateException("DataBuffer contains wrong data: " + buffer.dataType());
CompressedDataBuffer comp = (CompressedDataBuffer) buffer;
CompressionDescriptor descriptor = comp.getCompressionDescriptor();
DataBuffer targetBuffer = Nd4j.createBuffer(descriptor.getCompressedLength() / 2);
if (Nd4j.dataType() == DataBuffer.Type.DOUBLE) {
nativeOps.convertHalfsToDoubles(
null,
comp.addressPointer(),
(int) descriptor.getCompressedLength() / 2,
targetBuffer.addressPointer()
);
} else if (Nd4j.dataType() == DataBuffer.Type.FLOAT) {
nativeOps.convertHalfsToFloats(
null,
comp.addressPointer(),
(int) descriptor.getCompressedLength() / 2,
targetBuffer.addressPointer()
);
} else {
throw new UnsupportedOperationException("Target dtype isn't supported: " + Nd4j.dataType());
}
return targetBuffer;
}
*/
/**
* This method converts Single/Double precision databuffer to Half-precision databuffer
*
* @param buffer
* @return
*/
/*@Override
public DataBuffer convertToHalfs(DataBuffer buffer) {
// we allocate pointer
ShortPointer pointer = new ShortPointer(buffer.length());
if (buffer.dataType() == DataBuffer.Type.DOUBLE) {
nativeOps.convertDoublesToHalfs(
null,
buffer.addressPointer(),
(int) buffer.length(),
pointer
);
} else if (buffer.dataType() == DataBuffer.Type.FLOAT) {
nativeOps.convertFloatsToHalfs(
null,
buffer.addressPointer(),
(int) buffer.length(),
pointer
);
} else {
throw new UnsupportedOperationException("Source dtype isn't supported: " + buffer.dataType());
}
CompressionDescriptor descriptor = new CompressionDescriptor(buffer, new Float16());
descriptor.setCompressedLength(buffer.length() * 2);
CompressedDataBuffer result = new CompressedDataBuffer(pointer, descriptor);
return result;
}
*/
/**
* This method converts Single/Double precision databuffer to Half-precision databuffer
*
* @param typeSrc
* @param source
* @param typeDst @return
*/
@Override
public INDArray convertDataEx(DataBuffer.TypeEx typeSrc, INDArray source, DataBuffer.TypeEx typeDst) {
if (source.isView())
throw new UnsupportedOperationException("Impossible to compress View. Consider using dup() before. ");
DataBuffer buffer = convertDataEx(typeSrc, source.data(), typeDst);
source.setData(buffer);
if (buffer instanceof CompressedDataBuffer)
source.markAsCompressed(true);
else source.markAsCompressed(false);
return source;
}
@Override
public DataBuffer convertDataEx(DataBuffer.TypeEx typeSrc, DataBuffer source, DataBuffer.TypeEx typeDst) {
int elementSize = 0;
if (typeDst.ordinal() <= 2)
elementSize = 1;
else if (typeDst.ordinal() <= 5)
elementSize = 2;
else if (typeDst.ordinal() == 6)
elementSize = 4;
else if (typeDst.ordinal() == 7)
elementSize = 8;
else throw new UnsupportedOperationException("Unknown target TypeEx: " + typeDst.name());
DataBuffer buffer = null;
if (typeDst.ordinal() < 6) {
// all types below 6 are compression modes
BytePointer pointer = new BytePointer(source.length() * elementSize);
CompressionDescriptor descriptor = new CompressionDescriptor(source, typeDst.name());
descriptor.setCompressionType(CompressionType.LOSSY);
descriptor.setCompressedLength(source.length() * elementSize);
buffer = new CompressedDataBuffer(pointer, descriptor);
} else {
// decompression mode
buffer = Nd4j.createBuffer(source.length(), false);
}
convertDataEx(typeSrc, source, typeDst, buffer);
return buffer;
}
@Override
public void convertDataEx(DataBuffer.TypeEx typeSrc, Pointer source, DataBuffer.TypeEx typeDst, Pointer target, long length) {
nativeOps.convertTypes(
null,
typeSrc.ordinal(),
source,
length,
typeDst.ordinal(),
target
);
}
@Override
public void convertDataEx(DataBuffer.TypeEx typeSrc, DataBuffer source, DataBuffer.TypeEx typeDst, DataBuffer target) {
convertDataEx(typeSrc, source.addressPointer(), typeDst, target.addressPointer(), target.length());
}
}
