{
  "config": {
    "input_seed": 42,
    "timed_runs": 10,
    "tolerance_abs": 0.00001,
    "tolerance_rel": 0.001,
    "warmup_runs": 3
  },
  "input_spec": "1x1600x80:float32;1x796:float32;1x398:float32;1x199:float32;1x100:float32",
  "license": "apache-2.0",
  "model_id": "zipformer-medium-cr-ctc__zipformer_ctc_fp16",
  "notes": "",
  "results": [
    {
      "backend": "wasm_xnnpack",
      "date": "2026-08-20",
      "delegation_evidence": [
        "error: WARNING: [npu_registry.cc:34] NPU accelerator could not be loaded and registered: kLiteRtStatusErrorInvalidArgument.",
        "error: WARNING: [npu_registry.cc:34] NPU accelerator could not be loaded and registered: kLiteRtStatusErrorInvalidArgument."
      ],
      "env": {
        "browser": "chromium",
        "browser_version": "151.0.7922.34",
        "headless": true,
        "jspi": true,
        "litertjs_core_version": "2.5.3",
        "machine_label": "mac-studio-m4-max",
        "os": "macOS",
        "os_version": "27.0.0",
        "webgpu_adapter": {
          "architecture": "metal-3",
          "description": "",
          "device": "",
          "vendor": "apple"
        }
      },
      "error": null,
      "failure_class": null,
      "full_delegation": null,
      "latency_p50_ms": 2190.745,
      "loads": true,
      "max_abs_diff": null,
      "max_rel_diff": null,
      "output_match": null,
      "provenance": "measured",
      "runs": true
    },
    {
      "backend": "webgpu_mldrift",
      "date": "2026-08-20",
      "delegation_evidence": [
        "error: WARNING: [npu_registry.cc:34] NPU accelerator could not be loaded and registered: kLiteRtStatusErrorInvalidArgument.",
        "error: WARNING: [npu_registry.cc:34] NPU accelerator could not be loaded and registered: kLiteRtStatusErrorInvalidArgument.",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n",
        "warning: Dispatch workgroup count Z (79202) exceeds max compute workgroups per dimension (65535).\n - While encoding [ComputePassEncoder (unlabeled)].DispatchWorkgroups(1, 1, 79202).\n - While finishing [CommandEncoder (unlabeled)].\n",
        "warning: [Invalid CommandBuffer] is invalid due to a previous error.\n - While calling [Queue].Submit([[Invalid CommandBuffer]])\n"
      ],
      "env": {
        "browser": "chromium",
        "browser_version": "151.0.7922.34",
        "headless": true,
        "jspi": true,
        "litertjs_core_version": "2.5.3",
        "machine_label": "mac-studio-m4-max",
        "os": "macOS",
        "os_version": "27.0.0",
        "webgpu_adapter": {
          "architecture": "metal-3",
          "description": "",
          "device": "",
          "vendor": "apple"
        }
      },
      "error": null,
      "failure_class": null,
      "full_delegation": true,
      "latency_p50_ms": 25.19,
      "loads": true,
      "max_abs_diff": 16.28699827194214,
      "max_rel_diff": 81159.26119402985,
      "output_match": false,
      "provenance": "measured",
      "runs": true
    }
  ],
  "schema_version": "1.0",
  "source": "https://huggingface.co/litert-community/Zipformer-medium-CR-CTC-LiteRT/resolve/main/zipformer_ctc_fp16.tflite"
}