[lora] Update load option to preload

engines/python/setup/djl_python/huggingface.py

@@ -531,8 +531,8 @@ def register_adapter(inputs: Input):
     adapter_name = inputs.get_property("name")
     adapter_alias = inputs.get_property("alias") or adapter_name
     adapter_path = inputs.get_property("src")
-    adapter_load = inputs.get_as_string(
-        "load").lower() == "true" if inputs.contains_key("load") else True
+    adapter_preload = inputs.get_as_string("preload").lower(
+    ) == "true" if inputs.contains_key("preload") else True
     adapter_pin = inputs.get_as_string(
         "pin").lower() == "true" if inputs.contains_key("pin") else False
 
@@ -543,10 +543,10 @@ def register_adapter(inputs: Input):
                 f"Only local LoRA models are supported. {adapter_path} is not a valid path"
             )
 
-        if not adapter_load and adapter_pin:
-            raise ValueError("Can not set load to false and pin to true")
+        if not adapter_preload and adapter_pin:
+            raise ValueError("Can not set preload to false and pin to true")
 
-        if adapter_load:
+        if adapter_preload:
             loaded = _service.add_lora(adapter_name, adapter_alias,
                                        adapter_path)
 
@@ -578,16 +578,16 @@ def update_adapter(inputs: Input):
     adapter_name = inputs.get_property("name")
     adapter_alias = inputs.get_property("alias") or adapter_name
     adapter_path = inputs.get_property("src")
-    adapter_load = inputs.get_as_string(
-        "load").lower() == "true" if inputs.contains_key("load") else True
+    adapter_preload = inputs.get_as_string("preload").lower(
+    ) == "true" if inputs.contains_key("preload") else True
     adapter_pin = inputs.get_as_string(
         "pin").lower() == "true" if inputs.contains_key("pin") else False
 
     if adapter_name not in _service.adapter_registry:
         raise ValueError(f"Adapter {adapter_alias} not registered.")
 
     try:
-        if not adapter_load and adapter_pin:
+        if not adapter_preload and adapter_pin:
             raise ValueError("Can not set load to false and pin to true")
 
         old_adapter = _service.adapter_registry[adapter_name]
@@ -596,10 +596,10 @@ def update_adapter(inputs: Input):
             raise NotImplementedError(
                 f"Updating adapter path is not supported.")
 
-        old_adapter_load = old_adapter.get_as_string("load").lower(
-        ) == "true" if old_adapter.contains_key("load") else True
-        if adapter_load != old_adapter_load:
-            if adapter_load:
+        old_adapter_preload = old_adapter.get_as_string("preload").lower(
+        ) == "true" if old_adapter.contains_key("preload") else True
+        if adapter_preload != old_adapter_preload:
+            if adapter_preload:
                 _service.add_lora(adapter_name, adapter_alias, adapter_path)
             else:
                 _service.remove_lora(adapter_name, adapter_alias)

serving/docs/adapters_api.md

@@ -20,8 +20,8 @@ This is an extension of the [Management API](management_api.md) and can be acces
 
 * name: The adapter name.
 * src: The adapter src. It currently requires a file, but eventually an id or URL can be supported depending on the model handler.
-* load (optional): Whether to load the adapter weights, defaults to `true`. If this option is enabled, adapter weights will be loaded in GPU memory during registration.
-* pin (optional): Whether to pin the adapter, defaults to `false`. If this option is enabled, adapter weights will be loaded, and the adapter is pinned during registration. This helps certain latency sensitive adapters to be present in GPU memory without being evicted.
+* preload (optional): Whether to preload the adapter during initialization, defaults to `true`.
+* pin (optional): Whether to pin the adapter, defaults to `false`. If this option is enabled, adapter will be preloaded, and the adapter is pinned during initialization. This helps certain latency sensitive adapters to be present in GPU memory without being evicted.
 * All additional arguments will be treated as additional model-specific options and will be passed to the model during adapter registration
 
 ```bash
@@ -36,7 +36,7 @@ curl -X POST "http://localhost:8080/models/adaptecho/adapters?name=a1&src=/opt/m
 
 `POST /models/{model_name}/adapters/{adapter_name}/update`
 
-* load (optional): Whether to load the adapter weights.
+* preload (optional): Whether to preload the adapter during initialization.
 * pin (optional): Whether to pin the adapter. LoRA adapters can be pinned in GPU without being evicted from LRUCache. This helps certain latency sensitive adapters to be present in GPU memory without being evicted.
 * All additional arguments will be treated as additional model-specific options and will be passed to the model during adapter registration
 

serving/src/main/java/ai/djl/serving/http/AdapterManagementRequestHandler.java

@@ -168,7 +168,8 @@ private void handleListAdapters(
         for (int i = pagination.getPageToken(); i < pagination.getLast(); ++i) {
             String adapterName = keys.get(i);
             Adapter<Input, Output> adapter = modelInfo.getAdapter(adapterName);
-            list.addAdapter(adapter.getName(), adapter.getSrc(), adapter.isLoad(), adapter.isPin());
+            list.addAdapter(
+                    adapter.getName(), adapter.getSrc(), adapter.isPreload(), adapter.isPin());
         }
 
         NettyUtils.sendJsonResponse(ctx, list);

serving/src/main/java/ai/djl/serving/http/DescribeAdapterResponse.java

@@ -20,7 +20,7 @@
 public class DescribeAdapterResponse {
     private String name;
     private String src;
-    private boolean load;
+    private boolean preload;
     private boolean pin;
 
     /**
@@ -31,7 +31,7 @@ public class DescribeAdapterResponse {
     public DescribeAdapterResponse(Adapter<Input, Output> adapter) {
         this.name = adapter.getName();
         this.src = adapter.getSrc();
-        this.load = adapter.isLoad();
+        this.preload = adapter.isPreload();
         this.pin = adapter.isPin();
     }
 
@@ -54,12 +54,12 @@ public String getSrc() {
     }
 
     /**
-     * Returns whether to load the adapter weights.
+     * Returns whether to preload the adapter during initialization.
      *
-     * @return whether to load the adapter weights
+     * @return whether to preload the adapter during initialization
      */
-    public boolean isLoad() {
-        return load;
+    public boolean isPreload() {
+        return preload;
     }
 
     /**

serving/src/main/java/ai/djl/serving/http/list/ListAdaptersResponse.java

@@ -58,24 +58,24 @@ public List<AdapterItem> getAdapters() {
      *
      * @param name the adapter name
      * @param src the adapter source
-     * @param load whether to load the adapter weights
+     * @param preload whether to preload the adapter during initialization
      * @param pin whether to pin the adapter
      */
-    public void addAdapter(String name, String src, boolean load, boolean pin) {
-        adapters.add(new AdapterItem(name, src, load, pin));
+    public void addAdapter(String name, String src, boolean preload, boolean pin) {
+        adapters.add(new AdapterItem(name, src, preload, pin));
     }
 
     /** A class that holds the adapter response. */
     public static final class AdapterItem {
         private String name;
         private String src;
-        private boolean load;
+        private boolean preload;
         private boolean pin;
 
-        private AdapterItem(String name, String src, boolean load, boolean pin) {
+        private AdapterItem(String name, String src, boolean preload, boolean pin) {
             this.name = name;
             this.src = src;
-            this.load = load;
+            this.preload = preload;
             this.pin = pin;
         }
 

serving/src/test/java/ai/djl/serving/ModelServerTest.java

@@ -1021,7 +1021,7 @@ private void testRegisterAdapter(Channel channel, boolean registerModel, boolean
                 JsonUtils.GSON.fromJson(result, DescribeAdapterResponse.class);
         assertEquals(resp.getName(), adapterName);
         assertEquals(resp.getSrc(), "src");
-        assertTrue(resp.isLoad());
+        assertTrue(resp.isPreload());
         assertFalse(resp.isPin());
     }
 
@@ -1130,7 +1130,7 @@ private void testUpdateAdapter(Channel channel, boolean modelPrefix)
                 JsonUtils.GSON.fromJson(result, DescribeAdapterResponse.class);
         assertEquals(resp.getName(), adapterName);
         assertEquals(resp.getSrc(), "src");
-        assertTrue(resp.isLoad());
+        assertTrue(resp.isPreload());
         assertTrue(resp.isPin());
     }
 
@@ -1190,7 +1190,7 @@ private void testUpdateAdapterHandlerError() throws InterruptedException {
                 JsonUtils.GSON.fromJson(result, DescribeAdapterResponse.class);
         assertEquals(resp.getName(), adapterName);
         assertEquals(resp.getSrc(), "src");
-        assertTrue(resp.isLoad());
+        assertTrue(resp.isPreload());
         assertFalse(resp.isPin());
     }
 
@@ -1224,7 +1224,7 @@ private void testUpdateAdapterOom() throws InterruptedException {
                 JsonUtils.GSON.fromJson(result, DescribeAdapterResponse.class);
         assertEquals(resp.getName(), adapterName);
         assertEquals(resp.getSrc(), "src");
-        assertTrue(resp.isLoad());
+        assertTrue(resp.isPreload());
         assertFalse(resp.isPin());
     }
 
@@ -1381,7 +1381,7 @@ private void testDescribeAdapter(Channel channel, boolean modelPrefix)
                 JsonUtils.GSON.fromJson(result, DescribeAdapterResponse.class);
         assertEquals(resp.getName(), "adaptable");
         assertEquals(resp.getSrc(), "src");
-        assertTrue(resp.isLoad());
+        assertTrue(resp.isPreload());
         assertTrue(resp.isPin());
     }
 

wlm/src/main/java/ai/djl/serving/wlm/Adapter.java

@@ -193,12 +193,12 @@ public void setOptions(Map<String, String> options) {
     }
 
     /**
-     * Returns whether to load the adapter weights.
+     * Returns whether to preload the adapter during initialization.
      *
-     * @return whether to load the adapter weights
+     * @return whether to preload the adapter during initialization
      */
-    public boolean isLoad() {
-        return Boolean.parseBoolean(options.getOrDefault("load", "true"));
+    public boolean isPreload() {
+        return Boolean.parseBoolean(options.getOrDefault("preload", "true"));
     }
 
     /**