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Add ability to poll engines for available devices #21

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Add ability to poll engines for available devices #21

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7363c31
Add ability to poll engines for available devices
alanocallaghan Apr 30, 2024
1bfaa1a
MPS only on pytorch
alanocallaghan May 1, 2024
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89 changes: 61 additions & 28 deletions src/main/java/qupath/ext/djl/DjlTools.java
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Original file line number Diff line number Diff line change
Expand Up @@ -16,35 +16,7 @@

package qupath.ext.djl;

import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import ai.djl.Device;
import org.bytedeco.javacpp.Loader;
import org.bytedeco.javacpp.PointerScope;
import org.bytedeco.javacpp.indexer.BooleanIndexer;
import org.bytedeco.javacpp.indexer.ByteIndexer;
import org.bytedeco.javacpp.indexer.DoubleIndexer;
import org.bytedeco.javacpp.indexer.FloatIndexer;
import org.bytedeco.javacpp.indexer.HalfIndexer;
import org.bytedeco.javacpp.indexer.IntIndexer;
import org.bytedeco.javacpp.indexer.LongIndexer;
import org.bytedeco.javacpp.indexer.UByteIndexer;
import org.bytedeco.javacpp.indexer.UShortIndexer;
import org.bytedeco.opencv.global.opencv_core;
import org.bytedeco.opencv.opencv_core.Mat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import ai.djl.MalformedModelException;
import ai.djl.Model;
import ai.djl.engine.Engine;
Expand All @@ -64,10 +36,38 @@
import ai.djl.translate.TranslatorContext;
import ai.djl.util.Pair;
import ai.djl.util.PairList;
import org.bytedeco.javacpp.PointerScope;
import org.bytedeco.javacpp.indexer.BooleanIndexer;
import org.bytedeco.javacpp.indexer.ByteIndexer;
import org.bytedeco.javacpp.indexer.DoubleIndexer;
import org.bytedeco.javacpp.indexer.FloatIndexer;
import org.bytedeco.javacpp.indexer.HalfIndexer;
import org.bytedeco.javacpp.indexer.IntIndexer;
import org.bytedeco.javacpp.indexer.LongIndexer;
import org.bytedeco.javacpp.indexer.UByteIndexer;
import org.bytedeco.javacpp.indexer.UShortIndexer;
import org.bytedeco.opencv.global.opencv_core;
import org.bytedeco.opencv.opencv_core.Mat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import qupath.lib.common.GeneralTools;
import qupath.opencv.dnn.DnnModel;
import qupath.opencv.dnn.DnnShape;
import qupath.opencv.tools.OpenCVTools;

import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
* Tools to help work with Deep Java Library within QuPath.
*
Expand Down Expand Up @@ -341,6 +341,39 @@ else if ((urlString.endsWith(".pb") || urlString.endsWith("tf_savedmodel.zip") |
return ModelZoo.loadModel(criteria);
}

/**
* Get the available devices for an Engine, including MPS if Apple Silicon.
* Does <b>not</b> attempt to download the engine if not available.
* @return An empty list if the engine isn't available, otherwise the possible devices you can currently use.
*/
public static Collection<String> getAvailableDevices(String engineName) {
Set<String> availableDevices = new LinkedHashSet<>();
var engine = DjlTools.getEngine(engineName, false);
if (engine == null) {
return List.of();
}
boolean includesMPS = false; // Don't add MPS twice
// This is expected to return GPUs if available, or CPU otherwise
for (var device : engine.getDevices()) {
String name = device.getDeviceType();
availableDevices.add(name);
if (name.toLowerCase().startsWith("mps"))
includesMPS = true;
}
// CPU should always be available
availableDevices.add("cpu");

// If we could use MPS, but don't have it already, add it
if (engineName.equalsIgnoreCase("pytorch")
&& !includesMPS
&& GeneralTools.isMac()
&& "aarch64".equals(System.getProperty("os.arch"))) {
availableDevices.add("mps");
}
return availableDevices;
}



/**
* Set the default device for the specified engine.
Expand Down
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