diff --git a/python/ray/dashboard/client/src/api.ts b/python/ray/dashboard/client/src/api.ts
index 7ed6b5ad6..fe9304496 100644
--- a/python/ray/dashboard/client/src/api.ts
+++ b/python/ray/dashboard/client/src/api.ts
@@ -133,9 +133,18 @@ export type NodeInfoResponse = {
 
 export const getNodeInfo = () => get<NodeInfoResponse>("/api/node_info", {});
 
+export type ResourceSlot = {
+  slot: number;
+  allocation: number;
+};
+
+export type ResourceAllocations = {
+  resourceSlots: ResourceSlot[];
+};
+
 export type RayletCoreWorkerStats = {
   usedResources: {
-    [key: string]: number;
+    [key: string]: ResourceAllocations;
   };
 };
 
@@ -168,7 +177,7 @@ export type RayletActorInfo =
       taskQueueLength: number;
       timestamp: number;
       usedObjectStoreMemory: number;
-      usedResources: { [key: string]: number };
+      usedResources: { [key: string]: ResourceAllocations };
       currentTaskDesc?: string;
       numPendingTasks?: number;
       webuiDisplay?: Record<string, string>;
diff --git a/python/ray/dashboard/client/src/pages/dashboard/logical-view/Actor.tsx b/python/ray/dashboard/client/src/pages/dashboard/logical-view/Actor.tsx
index 3d21d4e5f..12e83d321 100644
--- a/python/ray/dashboard/client/src/pages/dashboard/logical-view/Actor.tsx
+++ b/python/ray/dashboard/client/src/pages/dashboard/logical-view/Actor.tsx
@@ -16,6 +16,7 @@ import {
   launchProfiling,
   RayletActorInfo,
 } from "../../../api";
+import { sum } from "../../../common/util";
 import ActorDetailsPane from "./ActorDetailsPane";
 import Actors from "./Actors";
 
@@ -137,7 +138,12 @@ class Actor extends React.Component<Props & WithStyles<typeof styles>, State> {
                 Object.entries(actor.usedResources).length > 0 &&
                 Object.entries(actor.usedResources)
                   .sort((a, b) => a[0].localeCompare(b[0]))
-                  .map(([key, value]) => `${value.toLocaleString()} ${key}`)
+                  .map(
+                    ([key, value]) =>
+                      `${sum(
+                        value.resourceSlots.map((slot) => slot.allocation),
+                      )} ${key}`,
+                  )
                   .join(", "),
             },
             {
diff --git a/python/ray/dashboard/client/src/pages/dashboard/node-info/features/GPU.tsx b/python/ray/dashboard/client/src/pages/dashboard/node-info/features/GPU.tsx
index 2b8fd862c..9e62e2cee 100644
--- a/python/ray/dashboard/client/src/pages/dashboard/node-info/features/GPU.tsx
+++ b/python/ray/dashboard/client/src/pages/dashboard/node-info/features/GPU.tsx
@@ -63,13 +63,22 @@ export const NodeGPU: NodeFeatureComponent = ({ node }) => {
 
 export const WorkerGPU: WorkerFeatureComponent = ({ rayletWorker }) => {
   const workerRes = rayletWorker?.coreWorkerStats.usedResources;
-  const workerUsedGPUResources = workerRes?.["GPU"] || NaN;
-  const message = isNaN(workerUsedGPUResources) ? (
-    <Typography color="textSecondary" component="span" variant="inherit">
-      N/A
-    </Typography>
-  ) : (
-    <b>`${workerUsedGPUResources} GPUs in use`</b>
-  );
+  const workerUsedGPUResources = workerRes?.["GPU"];
+  let message;
+  if (workerUsedGPUResources === undefined) {
+    message = (
+      <Typography color="textSecondary" component="span" variant="inherit">
+        N/A
+      </Typography>
+    );
+  } else {
+    const aggregateAllocation = sum(
+      workerUsedGPUResources.resourceSlots.map(
+        (resourceSlot) => resourceSlot.allocation,
+      ),
+    );
+    const plural = aggregateAllocation === 1 ? "" : "s";
+    message = <b>{`${aggregateAllocation} GPU${plural} in use`}</b>;
+  }
   return <div style={{ minWidth: 60 }}>{message}</div>;
 };
diff --git a/python/ray/tests/test_metrics.py b/python/ray/tests/test_metrics.py
index 8b27373d4..d1bf8b31a 100644
--- a/python/ray/tests/test_metrics.py
+++ b/python/ray/tests/test_metrics.py
@@ -223,7 +223,13 @@ def test_raylet_info_endpoint(shutdown_only):
                 raise Exception(
                     "Timed out while waiting for dashboard to start.")
 
-    assert parent_actor_info["usedResources"]["CPU"] == 2
+    def cpu_resources(actor_info):
+        cpu_resources = 0
+        for slot in actor_info["usedResources"]["CPU"]["resourceSlots"]:
+            cpu_resources += slot["allocation"]
+        return cpu_resources
+
+    assert cpu_resources(parent_actor_info) == 2
     assert parent_actor_info["numExecutedTasks"] == 4
     for _, child_actor_info in children.items():
         if child_actor_info["state"] == -1:
@@ -231,7 +237,7 @@ def test_raylet_info_endpoint(shutdown_only):
         else:
             assert child_actor_info["state"] == 1
             assert len(child_actor_info["children"]) == 0
-            assert child_actor_info["usedResources"]["CPU"] == 1
+            assert cpu_resources(child_actor_info) == 1
 
     profiling_id = requests.get(
         webui_url + "/api/launch_profiling",
diff --git a/src/ray/core_worker/core_worker.cc b/src/ray/core_worker/core_worker.cc
index b24a99340..e39aed379 100644
--- a/src/ray/core_worker/core_worker.cc
+++ b/src/ray/core_worker/core_worker.cc
@@ -1602,6 +1602,9 @@ Status CoreWorker::ExecuteTask(const TaskSpecification &task_spec,
   {
     absl::MutexLock lock(&mutex_);
     current_task_ = TaskSpecification();
+    if (task_spec.IsNormalTask()) {
+      resource_ids_.reset(new ResourceMappingType());
+    }
   }
   RAY_LOG(DEBUG) << "Finished executing task " << task_spec.TaskId();
 
@@ -1962,11 +1965,13 @@ void CoreWorker::HandleGetCoreWorkerStats(const rpc::GetCoreWorkerStatsRequest &
   stats->set_actor_id(actor_id_.Binary());
   auto used_resources_map = stats->mutable_used_resources();
   for (auto const &it : *resource_ids_) {
-    double quantity = 0;
+    rpc::ResourceAllocations allocations;
     for (auto const &pair : it.second) {
-      quantity += pair.second;
+      auto resource_slot = allocations.add_resource_slots();
+      resource_slot->set_slot(pair.first);
+      resource_slot->set_allocation(pair.second);
     }
-    (*used_resources_map)[it.first] = quantity;
+    (*used_resources_map)[it.first] = allocations;
   }
   stats->set_actor_title(actor_title_);
   google::protobuf::Map<std::string, std::string> webui_map(webui_display_.begin(),
diff --git a/src/ray/protobuf/common.proto b/src/ray/protobuf/common.proto
index cef9c087c..d27def1b0 100644
--- a/src/ray/protobuf/common.proto
+++ b/src/ray/protobuf/common.proto
@@ -254,6 +254,17 @@ message ObjectRefInfo {
   bool pinned_in_memory = 7;
 }
 
+// Details about the allocation of a given resource. Some resources
+// (e.g., GPUs) have individually allocatable units that are represented
+// as "slots" here.
+message ResourceAllocations {
+  message ResourceSlot {
+    int64 slot = 1;
+    double allocation = 2;
+  }
+  repeated ResourceSlot resource_slots = 1;
+}
+
 // Debug info returned from the core worker.
 message CoreWorkerStats {
   // Debug string of the currently executing task.
@@ -270,8 +281,8 @@ message CoreWorkerStats {
   int64 port = 7;
   // Actor ID.
   bytes actor_id = 8;
-  // A map from the resource name (e.g. "CPU") to the amount of resource used.
-  map<string, double> used_resources = 9;
+  // A map from the resource name (e.g. "CPU") to its allocation.
+  map<string, ResourceAllocations> used_resources = 9;
   // A string displayed on Dashboard.
   map<string, string> webui_display = 10;
   // Number of objects that are IN_PLASMA_ERROR in the local memory store.