[js/webgpu] Donot record with computePassEncoder when capturing

microsoft · Nov 19, 2024 · cc7acc0 · cc7acc0
1 parent 497b06f
commit cc7acc0
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Showing 3 changed files with 57 additions and 21 deletions.
diff --git a/js/web/lib/wasm/jsep/backend-webgpu.ts b/js/web/lib/wasm/jsep/backend-webgpu.ts
@@ -23,13 +23,21 @@ import {
   TimestampQuery,
 } from './webgpu/types';
 
-interface CommandInfo {
+interface ComputeCommand {
   readonly kernelId: number;
   readonly computePipeline: GPUComputePipeline;
   readonly bindGroup: GPUBindGroup;
   readonly dispatchGroup: [number, number, number];
 }
 
+interface MemcpyCommand {
+  readonly source: GPUBuffer;
+  readonly dest: GPUBuffer;
+  readonly size: number;
+}
+
+type Command = ComputeCommand | MemcpyCommand;
+
 interface KernelInfo {
   readonly kernelType: string;
   readonly kernelName: string;
@@ -234,9 +242,9 @@ export class WebGpuBackend {
   env: Env;
   sessionStatus: SessionState = 'default';
   /**
-   * a SessionID -> CommandInfo[] mapping. It's used to record all GPU commands for corresponding session.
+   * a SessionID -> Command[] mapping. It's used to record all GPU commands for corresponding session.
    */
-  capturedCommandList: Map<number, CommandInfo[]> = new Map();
+  capturedCommandList: Map<number, Command[]> = new Map();
 
   /**
    * a SessionID -> PendingKernelInfo[] mapping for profiling.
@@ -910,9 +918,14 @@ export class WebGpuBackend {
       const computePassEncoder = this.getComputePassEncoder();
       const command = sessionCommandList![i];
       this.writeTimestamp(this.pendingDispatchNumber * 2);
-      computePassEncoder.setPipeline(command.computePipeline);
-      computePassEncoder.setBindGroup(0, command.bindGroup);
-      computePassEncoder.dispatchWorkgroups(...command.dispatchGroup);
+      if ('bindGroup' in command) {
+        computePassEncoder.setPipeline(command.computePipeline);
+        computePassEncoder.setBindGroup(0, command.bindGroup);
+        computePassEncoder.dispatchWorkgroups(...command.dispatchGroup);
+      } else {
+        const commandEncoder = this.getCommandEncoder();
+        commandEncoder.copyBufferToBuffer(command.source, 0, command.dest, 0, command.size);
+      }
       this.writeTimestamp(this.pendingDispatchNumber * 2 + 1);
       this.pendingDispatchNumber++;
       if (this.queryType !== 'none') {

diff --git a/js/web/lib/wasm/jsep/webgpu/gpu-data-manager.ts b/js/web/lib/wasm/jsep/webgpu/gpu-data-manager.ts
@@ -274,16 +274,39 @@ class GpuDataManagerImpl implements GpuDataManager {
 
     const size = calcNormalizedBufferSize(sourceGpuDataCache.originalSize);
 
-    // GPU copy
-    const commandEncoder = this.backend.getCommandEncoder();
-    this.backend.endComputePass();
-    commandEncoder.copyBufferToBuffer(
-      sourceGpuDataCache.gpuData.buffer,
-      0,
-      destinationGpuDataCache.gpuData.buffer,
-      0,
-      size,
-    );
+    if (this.backend.sessionStatus === 'capturing') {
+      const command = {
+        source: sourceGpuDataCache.gpuData.buffer,
+        dest: destinationGpuDataCache.gpuData.buffer,
+        size: size,
+      };
+      const sessionCommandList = this.backend.capturedCommandList.get(this.backend.currentSessionId!);
+      sessionCommandList!.push(command);
+    } else {
+      // GPU copy
+      const commandEncoder = this.backend.getCommandEncoder();
+      this.backend.endComputePass();
+      commandEncoder.copyBufferToBuffer(
+        sourceGpuDataCache.gpuData.buffer,
+        0,
+        destinationGpuDataCache.gpuData.buffer,
+        0,
+        size,
+      );
+    }
+
+    this.backend.writeTimestamp(this.backend.pendingDispatchNumber * 2 + 1);
+    this.backend.pendingDispatchNumber++;
+
+    if (
+      this.backend.pendingDispatchNumber >= this.backend.maxDispatchNumber ||
+      this.backend.queryType === 'at-passes'
+    ) {
+      this.backend.endComputePass();
+    }
+    if (this.backend.pendingDispatchNumber >= this.backend.maxDispatchNumber) {
+      this.backend.flush();
+    }
   }
 
   registerExternalBuffer(buffer: GPUBuffer, originalSize: number, previous?: [GpuDataId, GPUBuffer]): number {

diff --git a/js/web/lib/wasm/jsep/webgpu/program-manager.ts b/js/web/lib/wasm/jsep/webgpu/program-manager.ts
@@ -41,7 +41,6 @@ export class ProgramManager {
   ): void {
     TRACE_FUNC_BEGIN(buildArtifact.programInfo.name);
     const device = this.backend.device;
-    const computePassEncoder = this.backend.getComputePassEncoder();
     this.backend.writeTimestamp(this.backend.pendingDispatchNumber * 2);
     const entries = [];
     for (const input of inputs) {
@@ -68,11 +67,12 @@ export class ProgramManager {
       };
       const sessionCommandList = this.backend.capturedCommandList.get(this.backend.currentSessionId!);
       sessionCommandList!.push(commandInfo);
+    } else {
+      const computePassEncoder = this.backend.getComputePassEncoder();
+      computePassEncoder.setPipeline(buildArtifact.computePipeline);
+      computePassEncoder.setBindGroup(0, bindGroup);
+      computePassEncoder.dispatchWorkgroups(...dispatchGroup);
     }
-
-    computePassEncoder.setPipeline(buildArtifact.computePipeline);
-    computePassEncoder.setBindGroup(0, bindGroup);
-    computePassEncoder.dispatchWorkgroups(...dispatchGroup);
     this.backend.writeTimestamp(this.backend.pendingDispatchNumber * 2 + 1);
     this.backend.pendingDispatchNumber++;