{
  "domain": "ai.onnx",
  "name": "Less",
  "sinceVersion": 13,
  "inputs": { "a": { "onnx": "A", "dtype": "T" }, "b": { "onnx": "B", "dtype": "T" } },
  "outputs": {
    "c": { "onnx": "C", "dtype": "B", "rank": "max(ranks.a, ranks.b)", "shape": "broadcastShape(shapes.a, shapes.b)" }
  },
  "typeConstraints": { "T": ["float32", "float16", "int32", "int16", "uint32", "int8", "uint8"], "B": ["bool"] },
  "tunables": { "WORKGROUP_SIZE": { "default": 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)"],
      "derive": { "vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"" },
      "passes": [
        {
          "id": "main",
          "name": "Less.Vec4",
          "shader": "compare-vec4.wgsl.jinja",
          "derive": {
            "op": "\"less\"",
            "vec4PerThread": "4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1"
          },
          "bindings": ["a", "b", "c", "params"],
          "dispatch": {
            "x": "min(ceilDiv((ceilDiv(numel(shapes.c) / 4, 4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1)), (tunables.WORKGROUP_SIZE)), 65535)",
            "y": "ceilDiv(ceilDiv((ceilDiv(numel(shapes.c) / 4, 4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1)), (tunables.WORKGROUP_SIZE)), 65535)",
            "z": 1
          }
        }
      ]
    },
    {
      "id": "scalar_b_vec4",
      "priority": 18,
      "when": ["sameShape(shapes.a, shapes.c)", "numel(shapes.b) == 1", "numel(shapes.c) > 0", "numel(shapes.c) % 4 == 0", "f16Ok(dtypes.T)"],
      "derive": { "vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"", "scalar": "dtypes.T" },
      "passes": [
        {
          "id": "main",
          "name": "Less.ScalarBVec4",
          "shader": "compare-vec4.wgsl.jinja",
          "derive": {
            "op": "\"less\"",
            "scalarOperand": "\"b\"",
            "vec4PerThread": "4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1"
          },
          "bindings": ["a", "b_scalar", "c", "params"],
          "dispatch": {
            "x": "min(ceilDiv((ceilDiv(numel(shapes.c) / 4, 4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1)), (tunables.WORKGROUP_SIZE)), 65535)",
            "y": "ceilDiv(ceilDiv((ceilDiv(numel(shapes.c) / 4, 4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1)), (tunables.WORKGROUP_SIZE)), 65535)",
            "z": 1
          }
        }
      ]
    },
    {
      "id": "scalar_a_vec4",
      "priority": 18,
      "when": ["sameShape(shapes.b, shapes.c)", "numel(shapes.a) == 1", "numel(shapes.c) > 0", "numel(shapes.c) % 4 == 0", "f16Ok(dtypes.T)"],
      "derive": { "vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"", "scalar": "dtypes.T" },
      "passes": [
        {
          "id": "main",
          "name": "Less.ScalarAVec4",
          "shader": "compare-vec4.wgsl.jinja",
          "derive": {
            "op": "\"less\"",
            "scalarOperand": "\"a\"",
            "vec4PerThread": "4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1"
          },
          "bindings": ["a_scalar", "b", "c", "params"],
          "dispatch": {
            "x": "min(ceilDiv((ceilDiv(numel(shapes.c) / 4, 4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1)), (tunables.WORKGROUP_SIZE)), 65535)",
            "y": "ceilDiv(ceilDiv((ceilDiv(numel(shapes.c) / 4, 4 if numel(shapes.c) * dtypeBytes(tensorDtypes.c) <= 16777216 else 1)), (tunables.WORKGROUP_SIZE)), 65535)",
            "z": 1
          }
        }
      ]
    },
    {
      "id": "broadcast_vec4",
      "priority": 10,
      "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)"],
      "derive": { "scalar": "dtypes.T" },
      "passes": [
        {
          "id": "main",
          "name": "Less",
          "shader": "compare-broadcast-vec4.wgsl.jinja",
          "derive": {
            "aShape": "shapes.a",
            "bShape": "shapes.b",
            "cShape": "shapes.c",
            "aRank": "ranks.a",
            "bRank": "ranks.b",
            "cRank": "ranks.c",
            "op": "\"less\""
          },
          "bindings": ["a_scalar", "b_scalar", "c", "params"],
          "dispatch": {
            "x": "min(ceilDiv((numel(shapes.c) / 4), (tunables.WORKGROUP_SIZE)), min(device.limits.maxComputeWorkgroupsPerDimension, 65535))",
            "y": 1,
            "z": 1
          }
        }
      ]
    },
    {
      "id": "broadcast",
      "when": ["ranks.a <= ranks.c", "ranks.b <= ranks.c", "f16Ok(dtypes.T)"],
      "derive": { "scalar": "dtypes.T" },
      "passes": [
        {
          "id": "main",
          "name": "Less",
          "shader": "compare-broadcast.wgsl.jinja",
          "derive": {
            "aShape": "shapes.a",
            "bShape": "shapes.b",
            "cShape": "shapes.c",
            "aRank": "ranks.a",
            "bRank": "ranks.b",
            "cRank": "ranks.c",
            "op": "\"less\"",
            "itemsPerInvocation": 4
          },
          "bindings": ["a_scalar", "b_scalar", "c_u32", "params_count"],
          "dispatch": {
            "x": "min(ceilDiv((ceilDiv(numel(shapes.c), 4)), (tunables.WORKGROUP_SIZE)), 65535)",
            "y": "ceilDiv(ceilDiv((ceilDiv(numel(shapes.c), 4)), (tunables.WORKGROUP_SIZE)), 65535)",
            "z": 1
          }
        }
      ]
    }
  ],
  "bindings": {
    "a": { "elementType": "$vectorScalar" },
    "b": { "elementType": "$vectorScalar" },
    "c": { "elementType": "vec4<u32>" },
    "params": { "struct": [{ "name": "count", "type": "u32", "value": "numel(shapes.c) / 4" }] },
    "b_scalar": { "name": "b", "elementType": "$scalar" },
    "a_scalar": { "name": "a", "elementType": "$scalar" },
    "c_u32": { "name": "c", "elementType": "u32" },
    "params_count": { "name": "params", "struct": [{ "name": "count", "type": "u32", "value": "numel(shapes.c)" }] }
  }
}