| { |
| "domain": "ai.onnx", |
| "name": "Less", |
| "sinceVersion": 13, |
| "description": "Performs an elementwise `less-than` comparison between tensors `A` and `B` with NumPy-style multidirectional broadcasting, producing a boolean result tensor `C`. Each output element is `true` where the corresponding element of `A` is strictly less than that of `B`.", |
| "inputs": [ |
| { "role": "A", "dtype": "T", "description": "First input operand for the less-than comparison." }, |
| { "role": "B", "dtype": "T", "description": "Second input operand for the less-than comparison." } |
| ], |
| "outputs": [ |
| { |
| "role": "C", |
| "dtype": "B", |
| "rank": "max(ranks.A, ranks.B)", |
| "description": "Boolean result tensor; true where A < B.", |
| "shape": "broadcastShape(shapes.A, shapes.B)" |
| } |
| ], |
| "typeConstraints": { "T": ["float32", "float16", "int32", "int16", "uint32", "int8", "uint8"], "B": ["bool"] }, |
| "args": { |
| "a": { "kind": "tensor", "semantic": "A", "role": "input" }, |
| "b": { "kind": "tensor", "semantic": "B", "role": "input" }, |
| "c": { "kind": "tensor", "semantic": "C", "role": "output" } |
| }, |
| "tunables": { "WORKGROUP_SIZE": 256 }, |
| "variants": [ |
| { |
| "id": "same_shape_vec4", |
| "priority": 20, |
| "when": ["sameShape(shapes.A, shapes.C)", "sameShape(shapes.B, shapes.C)", "numel(shapes.C) > 0", "numel(shapes.C) % 4 == 0", "f16Ok(dtypes.T)"], |
| "constants": { "vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"", "usesF16": "dtypes.T == \"f16\"" }, |
| "passes": [ |
| { |
| "id": "main", |
| "name": "Less.vec4", |
| "source": { "shader": "compare-vec4.wgsl.jinja", "inputs": { "op": "\"less\"" } }, |
| "bindings": [ |
| { |
| "name": "a", |
| "arg": "a", |
| "semantic": "A", |
| "buffer": { "type": "read-only-storage" }, |
| "elementType": "$vectorScalar" |
| }, |
| { |
| "name": "b", |
| "arg": "b", |
| "semantic": "B", |
| "buffer": { "type": "read-only-storage" }, |
| "elementType": "$vectorScalar" |
| }, |
| { "name": "c", "arg": "c", "semantic": "C", "buffer": { "type": "storage" }, "elementType": "vec4<u32>" }, |
| { |
| "name": "params", |
| "semantic": "kernel.params", |
| "buffer": { "type": "uniform" }, |
| "struct": { |
| "name": "Params", |
| "fields": [{ "name": "count", "type": "u32", "value": "numel(shapes.C) / 4" }] |
| } |
| } |
| ], |
| "dispatch": { "threads": "numel(shapes.C) / 4", "workgroupSize": "tunables.WORKGROUP_SIZE" } |
| } |
| ] |
| }, |
| { |
| "id": "broadcast_vec4", |
| "when": ["ranks.A <= ranks.C", "ranks.B <= ranks.C", "ranks.C >= 1", "dim(shapes.C, ranks.C - 1) % 4 == 0", "numel(shapes.C) % 4 == 0", "numel(shapes.C) >= 4", "f16Ok(dtypes.T)"], |
| "constants": { "scalar": "dtypes.T", "usesF16": "dtypes.T == \"f16\"" }, |
| "passes": [ |
| { |
| "id": "main", |
| "name": "Less", |
| "source": { |
| "shader": "compare-broadcast-vec4.wgsl.jinja", |
| "inputs": { |
| "aShape": "shapes.A", |
| "bShape": "shapes.B", |
| "cShape": "shapes.C", |
| "aRank": "ranks.A", |
| "bRank": "ranks.B", |
| "cRank": "ranks.C", |
| "op": "\"less\"" |
| } |
| }, |
| "bindings": [ |
| { |
| "name": "a", |
| "arg": "a", |
| "semantic": "A", |
| "buffer": { "type": "read-only-storage" }, |
| "elementType": "$scalar" |
| }, |
| { |
| "name": "b", |
| "arg": "b", |
| "semantic": "B", |
| "buffer": { "type": "read-only-storage" }, |
| "elementType": "$scalar" |
| }, |
| { "name": "c", "arg": "c", "semantic": "C", "buffer": { "type": "storage" }, "elementType": "vec4<u32>" }, |
| { |
| "name": "params", |
| "semantic": "kernel.params", |
| "buffer": { "type": "uniform" }, |
| "struct": { |
| "name": "Params", |
| "fields": [{ "name": "count", "type": "u32", "value": "numel(shapes.C) / 4" }] |
| } |
| } |
| ], |
| "dispatch": { "gridStride": "numel(shapes.C) / 4", "workgroupSize": "tunables.WORKGROUP_SIZE" } |
| } |
| ], |
| "priority": 10 |
| }, |
| { |
| "id": "broadcast", |
| "when": ["ranks.A <= ranks.C", "ranks.B <= ranks.C", "f16Ok(dtypes.T)"], |
| "constants": { "scalar": "dtypes.T", "usesF16": "dtypes.T == \"f16\"" }, |
| "passes": [ |
| { |
| "id": "main", |
| "name": "Less", |
| "source": { |
| "shader": "compare-broadcast.wgsl.jinja", |
| "inputs": { |
| "aShape": "shapes.A", |
| "bShape": "shapes.B", |
| "cShape": "shapes.C", |
| "aRank": "ranks.A", |
| "bRank": "ranks.B", |
| "cRank": "ranks.C", |
| "op": "\"less\"", |
| "itemsPerInvocation": 4 |
| } |
| }, |
| "bindings": [ |
| { |
| "name": "a", |
| "arg": "a", |
| "semantic": "A", |
| "buffer": { "type": "read-only-storage" }, |
| "elementType": "$scalar" |
| }, |
| { |
| "name": "b", |
| "arg": "b", |
| "semantic": "B", |
| "buffer": { "type": "read-only-storage" }, |
| "elementType": "$scalar" |
| }, |
| { "name": "c", "arg": "c", "semantic": "C", "buffer": { "type": "storage" }, "elementType": "u32" }, |
| { |
| "name": "params", |
| "semantic": "kernel.params", |
| "buffer": { "type": "uniform" }, |
| "struct": { "name": "Params", "fields": [{ "name": "count", "type": "u32", "value": "numel(shapes.C)" }] } |
| } |
| ], |
| "dispatch": { "threads": "ceilDiv(numel(shapes.C), 4)", "workgroupSize": "tunables.WORKGROUP_SIZE" } |
| } |
| ] |
| }, |
| { |
| "id": "same_shape_scalar_x4", |
| "priority": 15, |
| "when": ["sameShape(shapes.A, shapes.C)", "sameShape(shapes.B, shapes.C)", "numel(shapes.C) > 0", "numel(shapes.C) % 4 != 0", "ranks.A <= ranks.C", "ranks.B <= ranks.C", "f16Ok(dtypes.T)"], |
| "constants": { "scalar": "dtypes.T", "usesF16": "dtypes.T == \"f16\"" }, |
| "passes": [ |
| { |
| "id": "main", |
| "name": "Less", |
| "source": { |
| "shader": "compare-broadcast.wgsl.jinja", |
| "inputs": { |
| "aShape": "shapes.A", |
| "bShape": "shapes.B", |
| "cShape": "shapes.C", |
| "aRank": "ranks.A", |
| "bRank": "ranks.B", |
| "cRank": "ranks.C", |
| "op": "\"less\"", |
| "itemsPerInvocation": 4 |
| } |
| }, |
| "bindings": [ |
| { |
| "name": "a", |
| "arg": "a", |
| "semantic": "A", |
| "buffer": { "type": "read-only-storage" }, |
| "elementType": "$scalar" |
| }, |
| { |
| "name": "b", |
| "arg": "b", |
| "semantic": "B", |
| "buffer": { "type": "read-only-storage" }, |
| "elementType": "$scalar" |
| }, |
| { "name": "c", "arg": "c", "semantic": "C", "buffer": { "type": "storage" }, "elementType": "u32" }, |
| { |
| "name": "params", |
| "semantic": "kernel.params", |
| "buffer": { "type": "uniform" }, |
| "struct": { "name": "Params", "fields": [{ "name": "count", "type": "u32", "value": "numel(shapes.C)" }] } |
| } |
| ], |
| "dispatch": { "threads": "ceilDiv(numel(shapes.C), 4)", "workgroupSize": "tunables.WORKGROUP_SIZE" } |
| } |
| ] |
| } |
| ] |
| } |
|
|
