com.microsoft.QuickGelu
com.microsoft · ONNX Runtime contrib operator · contrib since_version 1
Description
Computes x * sigmoid(alpha * x) elementwise, a fast approximation of GELU activation. The output has the same shape as the input. This WebGPU package implements float16 and float32; the schema-allowed double and bfloat16 types are not supported.
See the ONNX Runtime QuickGelu contrib-operator spec for the reference semantics.
Inputs
| Name | Bind key | Logical dtype | Rank | Shape | Description | Presence |
|---|---|---|---|---|---|---|
X |
X |
T |
— | — | Input tensor of any shape. | required |
Outputs
| Name | Bind key | Logical dtype | Rank | Shape | Description | Presence |
|---|---|---|---|---|---|---|
Y |
Y |
T |
same as X |
same as X |
Output tensor; same shape as the input. | required |
Attributes
Default values (overridable per request):
| Attribute | Default | Description |
|---|---|---|
alpha |
1.702 |
Scalar multiplier applied to x inside the sigmoid; defaults to 1.702, which approximates GELU. |
Type constraints
| Variable | Allowed dtypes |
|---|---|
T |
float32, float16 |
Files
metadata.json— kernel metadata (id, digests, provenance)manifest.json— the op contract (source of truth)test.json— correctness casesbench.json— benchmark + tuning casesquick-gelu.wgsl.jinja
Use with @huggingface/kernels
The loader derives every required output's shape and logical dtype from the manifest contract and this call. It then allocates the result tensors automatically.
The version: 1 option selects the published kernel contract; it is independent of any operator opset, contrib since_version, or model version.
Replace each *Data placeholder with a typed array containing the corresponding input data.
import { getKernel } from "@huggingface/kernels";
const kernel = await getKernel("webgpu-kernels/com.microsoft.QuickGelu", { version: 1 });
const { Y } = await kernel({ X: { data: XData, shape: [2, 4] } });
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Requires WebGPU support. See the compatibility table.