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qvac-gpu.js

@@ -12,6 +12,7 @@
 // 32-weight block (GGUF-native precision). One workgroup per output row, 64
 // threads reduce over K. `add` fuses a residual: o = x·dequant(qw,sc) [+ r].
 import { requant2bit, signsFor } from "./qvac-2bit.mjs";
+import { getDevice } from "./holo-gpu-device.mjs";   // ONE shared WebGPU device (engine + BLAKE3 verify + Bao)
 
 const mmKernel = (bits, add, q3f = false) => `
 @group(0) @binding(0) var<storage,read> x: array<f32>;
@@ -938,19 +939,10 @@ export async function createQvacGPU(manifest, fetchTensor, cap = 64, eos = 2, st
   const qlenOf = (t) => bits === 3 ? (t.N * (t.K / 32)) * 12 : bits === 4 ? (t.N * t.K) / 2 : t.N * t.K;   // Q3 = 3 u32 (12 bytes) per 32-block
   const slenOf = (t) => t.N * (t.K / 32) * 4;
 
-  const adapter = await navigator.gpu.requestAdapter();
-  // Big-vocab models (Qwen: 151 k × d int8 ≈ 136 MB) exceed the default 128 MB
-  // storage-buffer binding limit — request the adapter's max so the bind succeeds.
-  const L = adapter.limits;
-  const canTs = adapter.features.has("timestamp-query");   // per-pass GPU profiling (dev: window.__profile)
-  const dev = await adapter.requestDevice({
-    requiredFeatures: canTs ? ["timestamp-query"] : [],
-    requiredLimits: {
-      maxStorageBufferBindingSize: L.maxStorageBufferBindingSize,
-      maxBufferSize: L.maxBufferSize,
-      maxComputeWorkgroupsPerDimension: L.maxComputeWorkgroupsPerDimension,
-    },
-  });
+  // ONE shared device (holo-gpu-device) — the engine, BLAKE3 verify, and Bao all use it, with the adapter's
+  // MAX limits so a 145 MB block binds, and timestamp-query when available. Sharing one device is what stops the
+  // two-device clash that silently corrupted GPU verify (a default-limits second device mis-hashed the embed).
+  const { dev, canTs } = await getDevice();
   // track total GPU memory allocated (weights + KV cache + scratch) so the system
   // monitor can show — and free — exactly what this model holds on the GPU.
   let gpuBytes = 0;