125 lines
4.7 KiB
Java
125 lines
4.7 KiB
Java
/*
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* ******************************************************************************
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* *
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* *
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* * This program and the accompanying materials are made available under the
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* * terms of the Apache License, Version 2.0 which is available at
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* * https://www.apache.org/licenses/LICENSE-2.0.
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* *
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* * See the NOTICE file distributed with this work for additional
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* * information regarding copyright ownership.
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* * Unless required by applicable law or agreed to in writing, software
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* * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* * License for the specific language governing permissions and limitations
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* * under the License.
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* *
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* * SPDX-License-Identifier: Apache-2.0
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* *****************************************************************************
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*/
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package org.nd4j.jita.constant;
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import lombok.extern.slf4j.Slf4j;
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import org.nd4j.common.primitives.Pair;
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import org.nd4j.jita.allocator.impl.AtomicAllocator;
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import org.nd4j.linalg.api.buffer.DataBuffer;
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import org.nd4j.linalg.api.buffer.DataType;
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import org.nd4j.linalg.api.ndarray.BaseShapeInfoProvider;
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import org.nd4j.linalg.api.shape.LongShapeDescriptor;
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import org.nd4j.linalg.api.shape.options.ArrayOptionsHelper;
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import org.nd4j.linalg.api.shape.options.ArrayType;
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import java.util.concurrent.Semaphore;
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import java.util.concurrent.atomic.AtomicLong;
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/**
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* @author raver119@gmail.com
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*/
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@Slf4j
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public class ProtectedCudaShapeInfoProvider extends BaseShapeInfoProvider {
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private AtomicAllocator allocator;
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private final AtomicLong cacheHit = new AtomicLong(1);
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private final AtomicLong cacheMiss = new AtomicLong(1);
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private final Semaphore lock = new Semaphore(1);
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protected static final ConstantProtector protector = ConstantProtector.getInstance();
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private static final ProtectedCudaShapeInfoProvider ourInstance = new ProtectedCudaShapeInfoProvider();
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private ProtectedCudaShapeInfoProvider() {
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}
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/**
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* This method forces cache purge, if cache is available for specific implementation
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*/
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@Override
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public void purgeCache() {
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protector.purgeProtector();
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}
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public static ProtectedCudaShapeInfoProvider getInstance() {
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return ourInstance;
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}
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@Override
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public Pair<DataBuffer, long[]> createShapeInformation(long[] shape, long[] stride, long elementWiseStride, char order, DataType type, boolean empty) {
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long extras = ArrayOptionsHelper.setOptionBit(0L, type);
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if (empty)
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extras = ArrayOptionsHelper.setOptionBit(extras, ArrayType.EMPTY);
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return createShapeInformation(shape, stride, elementWiseStride, order, extras);
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}
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@Override
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public Pair<DataBuffer, long[]> createShapeInformation(long[] shape, long[] stride, long elementWiseStride, char order, long extras) {
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// We enforce offset to 0 in shapeBuffer, since we need it for cache efficiency + we don't actually use offset value @ native side
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long offset = 0;
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if (elementWiseStride < 0)
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elementWiseStride = 0;
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Integer deviceId = AtomicAllocator.getInstance().getDeviceId();
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LongShapeDescriptor descriptor = new LongShapeDescriptor(shape, stride, offset, elementWiseStride, order, extras);
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if (!protector.containsDataBuffer(deviceId, descriptor)) {
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Pair<DataBuffer, long[]> buffer = null;
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synchronized (this) {
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if (!protector.containsDataBuffer(deviceId, descriptor)) {
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//log.info("Cache miss: {}", descriptor);
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buffer = super.createShapeInformation(shape, stride, elementWiseStride, order, extras);
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buffer.getFirst().setConstant(true);
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/*
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// constant space is allocated at cpp level
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if (CudaEnvironment.getInstance().getConfiguration().getMemoryModel() == Configuration.MemoryModel.IMMEDIATE) {
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Nd4j.getConstantHandler().moveToConstantSpace(buffer.getFirst());
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}
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*/
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//deviceCache.get(deviceId).put(descriptor, buffer);
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protector.persistDataBuffer(deviceId, descriptor, buffer);
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bytes.addAndGet(buffer.getFirst().length() * 8 * 2);
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cacheMiss.incrementAndGet();
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} else {
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buffer = protector.getDataBuffer(deviceId, descriptor);
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}
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}
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return buffer;
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} else {
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// log.info("Cache hit: {}", descriptor);
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cacheHit.incrementAndGet();
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}
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return protector.getDataBuffer(deviceId, descriptor); //deviceCache.get(deviceId).get(descriptor);
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}
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}
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