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{
"domain": "ai.onnx",
"name": "ReduceLogSumExp",
"sinceVersion": 18,
"description": "Computes `log(sum(exp(x)))` over the specified axes of the input tensor. The output rank matches the input when `keepdims` is 1; reduced dimensions are pruned when `keepdims` is 0. Reduction over an empty set of values yields negative infinity.",
"inputs": [{ "role": "data", "dtype": "T", "description": "The input tensor to reduce." }],
"outputs": [
{
"role": "reduced",
"dtype": "T",
"rank": "ranks.data if attrs.keepdims == 1 or ((attrs.axes | length) == 0 and attrs.noop_with_empty_axes == 1) else (ranks.data - (attrs.axes | length) if (attrs.axes | length) > 0 else 0)",
"description": "The reduced output tensor."
}
],
"attributes": { "keepdims": 1, "noop_with_empty_axes": 0, "axes": [] },
"attributeDescriptions": {
"keepdims": "If 1, retains the reduced dimension with size 1 in the output; if 0, the reduced dimension is removed.",
"noop_with_empty_axes": "When 1 and `axes` is empty, acts as an identity (no reduction); when 0 and `axes` is empty, reduces over all axes.",
"axes": "Values of the optional ONNX `axes` tensor input, supplied through this request attribute; an empty list follows `noop_with_empty_axes`."
},
"attributeConstraints": { "keepdims": { "values": [0, 1] }, "noop_with_empty_axes": { "values": [0, 1] } },
"typeConstraints": { "T": ["float32", "float16", "int32"] },
"args": {
"x": { "kind": "tensor", "semantic": "data", "role": "input" },
"y": { "kind": "tensor", "semantic": "reduced", "role": "output" }
},
"derive": {
"deviceWorkgroupCap": "min(device.limits.maxComputeInvocationsPerWorkgroup, device.limits.maxComputeWorkgroupSizeX)",
"reduceWorkgroupSize": "min(tunables.WORKGROUP_SIZE, deviceWorkgroupCap)",
"treeWorkgroupOk": "reduceWorkgroupSize > 0 and pow2ceil(reduceWorkgroupSize) == reduceWorkgroupSize and reduceWorkgroupSize * dtypeBytes(\"float32\") <= device.limits.maxComputeWorkgroupStorageSize",
"subgroupWorkgroupFloor": "min(reduceWorkgroupSize, max(1, device.adapterInfo.subgroupMaxSize))",
"lastAxisRows": "rows(shapes.data, ranks.data - 1) if ranks.data > 0 else 1",
"lastAxisCols": "dim(shapes.data, ranks.data - 1) if ranks.data > 0 else 1",
"rowSerialPreferred": "lastAxisRows >= tunables.ROW_SERIAL_MIN_ROWS and lastAxisCols <= tunables.ROW_SERIAL_MAX_COLS",
"axis0Rows": "dim(shapes.data, 0) if ranks.data >= 2 else 0",
"axis0Cols": "dim(shapes.data, 1) if ranks.data >= 2 else 0",
"axis0SplitCount": "min(tunables.AXIS0_MAX_SPLITS, pow2ceil(ceilDiv(axis0Rows, tunables.AXIS0_SPLIT_TARGET_ROWS)))",
"axis0SplitScratchBytes": "3 * axis0SplitCount * axis0Cols * dtypeBytes(\"float32\")",
"axis0SplitPathFits": "axis0SplitCount <= device.limits.maxComputeWorkgroupsPerDimension and ceilDiv(ceilDiv(axis0Cols, reduceWorkgroupSize), device.limits.maxComputeWorkgroupsPerDimension) <= device.limits.maxComputeWorkgroupsPerDimension and axis0SplitScratchBytes <= device.limits.maxStorageBufferBindingSize and axis0SplitScratchBytes <= device.limits.maxBufferSize",
"reduceAxis": "(attrs.axes[0] + ranks.data if attrs.axes[0] < 0 else attrs.axes[0]) if ((attrs.axes | length) == 1 and isUniqueIntList(attrs.axes, 0 - ranks.data, ranks.data, 1)) else ranks.data",
"axisSplitDim": "dim(shapes.data, reduceAxis) if ranks.data >= 2 and reduceAxis < ranks.data else 0",
"axisSplitInner": "inner(shapes.data, reduceAxis) if ranks.data >= 2 and reduceAxis < ranks.data else 1",
"axisSplitOutputs": "numel(shapes.reduced)",
"axisSplitCount": "min(tunables.AXIS0_MAX_SPLITS, pow2ceil(ceilDiv(axisSplitDim, tunables.AXIS0_SPLIT_TARGET_ROWS)))",
"axisSplitScratchBytes": "3 * axisSplitCount * axisSplitOutputs * 4",
"axisSplitPathFits": "axisSplitCount <= device.limits.maxComputeWorkgroupsPerDimension and ceilDiv(ceilDiv(axisSplitOutputs, reduceWorkgroupSize), device.limits.maxComputeWorkgroupsPerDimension) <= device.limits.maxComputeWorkgroupsPerDimension and axisSplitScratchBytes <= device.limits.maxStorageBufferBindingSize and axisSplitScratchBytes <= device.limits.maxBufferSize",
"axis0TilePathFits": "treeWorkgroupOk and tunables.AXIS0_TILE_COLS > 0 and tunables.AXIS0_TILE_COLS <= reduceWorkgroupSize and reduceWorkgroupSize % tunables.AXIS0_TILE_COLS == 0",
"flatItems": "numel(shapes.data) / tunables.VECTOR_WIDTH if numel(shapes.data) % tunables.VECTOR_WIDTH == 0 else numel(shapes.data)",
"flatSplitCount": "max(1, min(tunables.FULL_REDUCE_MAX_SPLITS, ceilDiv(flatItems, reduceWorkgroupSize)))",
"flatScratchBytes": "3 * flatSplitCount * dtypeBytes(\"float32\")",
"flatPathFits": "treeWorkgroupOk and flatSplitCount <= device.limits.maxComputeWorkgroupsPerDimension and flatScratchBytes <= device.limits.maxStorageBufferBindingSize and flatScratchBytes <= device.limits.maxBufferSize",
"flatParallelCovered": "(dtypes.T == \"f32\" or dtypes.T == \"f16\") and f16Ok(dtypes.T) and numel(shapes.reduced) == 1 and numel(shapes.data) >= tunables.FULL_REDUCE_MIN_ELEMENTS and flatPathFits",
"contiguousSuffixParallelCovered": "(dtypes.T == \"f32\" or dtypes.T == \"f16\") and f16Ok(dtypes.T) and numel(shapes.reduced) > 0 and numel(shapes.data) % numel(shapes.reduced) == 0 and numel(shapes.data) / numel(shapes.reduced) >= tunables.CONTIGUOUS_SUFFIX_MIN_COLS and ((ranks.data == 3 and hasAxis(attrs.axes, 0, 3) == false and hasAxis(attrs.axes, 1, 3) and hasAxis(attrs.axes, 2, 3) and numel(shapes.reduced) == dim(shapes.data, 0)) or (ranks.data == 4 and hasAxis(attrs.axes, 0, 4) == false and hasAxis(attrs.axes, 1, 4) == false and hasAxis(attrs.axes, 2, 4) and hasAxis(attrs.axes, 3, 4) and numel(shapes.reduced) == dim(shapes.data, 0) * dim(shapes.data, 1)) or (ranks.data == 4 and hasAxis(attrs.axes, 0, 4) == false and hasAxis(attrs.axes, 1, 4) and hasAxis(attrs.axes, 2, 4) and hasAxis(attrs.axes, 3, 4) and numel(shapes.reduced) == dim(shapes.data, 0)))"
},
"tunables": {
"WORKGROUP_SIZE": 256,
"VECTOR_WIDTH": 4,
"ROW_PARALLEL_MIN_COLS": 64,
"SUBGROUP_MIN_COLS": 256,
"SUBGROUP_SMALL_ROW_LIMIT": 32768,
"AXIS0_SPLIT_MIN_ROWS": 8192,
"AXIS0_SPLIT_TARGET_ROWS": 256,
"AXIS0_MAX_SPLITS": 128,
"AXIS0_TILE_MIN_ROWS": 64,
"AXIS0_TILE_MIN_COLS": 16,
"AXIS0_TILE_COLS": 16,
"AXIS_SPLIT_TILE_COLS": 8,
"FULL_REDUCE_MIN_ELEMENTS": 8192,
"FULL_REDUCE_MAX_SPLITS": 256,
"CONTIGUOUS_SUFFIX_MIN_COLS": 256,
"AXES02_WORKGROUP_SIZE": 256,
"ROW_SERIAL_MIN_ROWS": 8192,
"ROW_SERIAL_MAX_COLS": 1024
},
"bindingSets": {
"axes02": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "d0", "type": "u32", "value": "dim(shapes.data, 0)" },
{ "name": "d1", "type": "u32", "value": "dim(shapes.data, 1)" },
{ "name": "d2", "type": "u32", "value": "dim(shapes.data, 2)" },
{ "name": "outCount", "type": "u32", "value": "numel(shapes.reduced)" }
]
}
}
],
"suffixVec4": [
{
"name": "x",
"arg": "x",
"semantic": "data",
"buffer": { "type": "read-only-storage" },
"elementType": "$vectorScalar"
},
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "numel(shapes.reduced)" },
{
"name": "chunkCount",
"type": "u32",
"value": "numel(shapes.data) / numel(shapes.reduced) / tunables.VECTOR_WIDTH"
}
]
}
}
],
"suffixScalar": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "numel(shapes.reduced)" },
{ "name": "cols", "type": "u32", "value": "numel(shapes.data) / numel(shapes.reduced)" }
]
}
}
],
"elementwise": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": { "name": "Params", "fields": [{ "name": "count", "type": "u32", "value": "numel(shapes.reduced)" }] }
}
],
"lastAxisVec4": [
{
"name": "x",
"arg": "x",
"semantic": "data",
"buffer": { "type": "read-only-storage" },
"elementType": "$vectorScalar"
},
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "rows(shapes.data, ranks.data - 1)" },
{ "name": "chunkCount", "type": "u32", "value": "dim(shapes.data, ranks.data - 1) / tunables.VECTOR_WIDTH" }
]
}
}
],
"lastAxisScalar": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "rows(shapes.data, ranks.data - 1)" },
{ "name": "cols", "type": "u32", "value": "dim(shapes.data, ranks.data - 1)" }
]
}
}
],
"lastAxisScalarSubgroup": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "rows(shapes.data, ranks.data - 1)" },
{ "name": "chunkCount", "type": "u32", "value": "dim(shapes.data, ranks.data - 1)" }
]
}
}
],
"scalar": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "1" },
{ "name": "cols", "type": "u32", "value": "1" },
{ "name": "outCount", "type": "u32", "value": "1" }
]
}
}
],
"rank1Axis0": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "dim(shapes.data, 0)" },
{ "name": "cols", "type": "u32", "value": "1" },
{ "name": "outCount", "type": "u32", "value": "numel(shapes.reduced)" }
]
}
}
],
"rank2Serial": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "dim(shapes.data, 0)" },
{ "name": "cols", "type": "u32", "value": "dim(shapes.data, 1)" },
{ "name": "outCount", "type": "u32", "value": "numel(shapes.reduced)" }
]
}
}
],
"rank2SerialAxis1": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "cols", "type": "u32", "value": "dim(shapes.data, 1)" },
{ "name": "outCount", "type": "u32", "value": "numel(shapes.reduced)" }
]
}
}
],
"axis0Parallel": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "dim(shapes.data, 0)" },
{ "name": "cols", "type": "u32", "value": "dim(shapes.data, 1)" }
]
}
}
],
"fullReduceSerial": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "numel(shapes.data)" },
{ "name": "cols", "type": "u32", "value": "1" },
{ "name": "outCount", "type": "u32", "value": "numel(shapes.reduced)" }
]
}
}
],
"axisSplitReduce": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "partials", "semantic": "partials", "buffer": { "type": "storage" }, "elementType": "$partialElement" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "axisDim", "type": "u32", "value": "axisSplitDim" },
{ "name": "inner", "type": "u32", "value": "axisSplitInner" },
{ "name": "outputs", "type": "u32", "value": "axisSplitOutputs" }
]
}
}
],
"axisSplitCombine": [
{
"name": "partials",
"semantic": "partials",
"buffer": { "type": "read-only-storage" },
"elementType": "$partialElement"
},
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": { "name": "Params", "fields": [{ "name": "cols", "type": "u32", "value": "axisSplitOutputs" }] }
}
],
"axis0SplitReduce": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "partials", "semantic": "partials", "buffer": { "type": "storage" }, "elementType": "$partialElement" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "rows", "type": "u32", "value": "dim(shapes.data, 0)" },
{ "name": "cols", "type": "u32", "value": "dim(shapes.data, 1)" }
]
}
}
],
"axis0SplitCombine": [
{
"name": "partials",
"semantic": "partials",
"buffer": { "type": "read-only-storage" },
"elementType": "$partialElement"
},
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": { "name": "Params", "fields": [{ "name": "cols", "type": "u32", "value": "dim(shapes.data, 1)" }] }
}
],
"rankNAxis": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [
{ "name": "axisDim", "type": "u32", "value": "axisSplitDim" },
{ "name": "outCount", "type": "u32", "value": "numel(shapes.reduced)" }
]
}
}
],
"flatPartialF32": [
{
"name": "x",
"arg": "x",
"semantic": "data",
"buffer": { "type": "read-only-storage" },
"elementType": "$flatScalar"
},
{ "name": "partials", "semantic": "partials", "buffer": { "type": "storage" }, "elementType": "f32" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": { "name": "Params", "fields": [{ "name": "count", "type": "u32", "value": "flatItems" }] }
}
],
"flatCombineF32": [
{ "name": "partials", "semantic": "partials", "buffer": { "type": "read-only-storage" }, "elementType": "f32" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": { "name": "Params", "fields": [{ "name": "cols", "type": "u32", "value": "1" }] }
}
],
"multiAxis": [
{ "name": "x", "arg": "x", "semantic": "data", "buffer": { "type": "read-only-storage" }, "elementType": "$T" },
{ "name": "y", "arg": "y", "semantic": "reduced", "buffer": { "type": "storage" }, "elementType": "$T" },
{
"name": "params",
"semantic": "kernel.params",
"buffer": { "type": "uniform" },
"struct": {
"name": "Params",
"fields": [{ "name": "outCount", "type": "u32", "value": "numel(shapes.reduced)" }]
}
}
]
},
"variants": [
{
"id": "contiguous_suffix_subgroup_vec4",
"priority": 30,
"requires": { "features": ["subgroups"] },
"when": ["device.wgslLanguageFeatures.has(\"subgroup_id\")", "not flatParallelCovered", "contiguousSuffixParallelCovered", "(numel(shapes.data) / numel(shapes.reduced)) % tunables.VECTOR_WIDTH == 0"],
"constants": {
"scalar": "dtypes.T",
"vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"",
"workgroupSize": "min(reduceWorkgroupSize, max(subgroupWorkgroupFloor, pow2ceil(ceilDiv(numel(shapes.data) / numel(shapes.reduced), tunables.VECTOR_WIDTH))))"
},
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.ContiguousSuffixSubgroupVec4",
"source": {
"shader": "reduce-row-subgroup.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"vec4": true,
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"subgroupCollectivesWidth": "portable",
"bindings": "suffixVec4",
"dispatch": { "workgroups": "numel(shapes.reduced)" }
}
]
},
{
"id": "contiguous_suffix_tree_vec4",
"priority": 22,
"when": ["not flatParallelCovered", "contiguousSuffixParallelCovered", "(numel(shapes.data) / numel(shapes.reduced)) % tunables.VECTOR_WIDTH == 0", "treeWorkgroupOk"],
"constants": {
"scalar": "dtypes.T",
"vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"",
"workgroupSize": "min(reduceWorkgroupSize, pow2ceil(ceilDiv(numel(shapes.data) / numel(shapes.reduced), tunables.VECTOR_WIDTH)))"
},
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.ContiguousSuffixTreeVec4",
"source": {
"shader": "reduce-row-tree.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"vec4": true,
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "suffixVec4",
"dispatch": { "workgroups": "numel(shapes.reduced)" }
}
]
},
{
"id": "contiguous_suffix_tree",
"priority": 21,
"when": ["not flatParallelCovered", "contiguousSuffixParallelCovered", "treeWorkgroupOk"],
"constants": {
"workgroupSize": "min(reduceWorkgroupSize, pow2ceil(numel(shapes.data) / numel(shapes.reduced)))",
"scalar": "dtypes.T"
},
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.ContiguousSuffixTree",
"source": {
"shader": "reduce-row-tree.wgsl.jinja",
"inputs": { "op": "\"logsumexp\"", "castF32": "dtypes.T == \"f16\"", "usesF16": "dtypes.T == \"f16\"" }
},
"bindings": "suffixScalar",
"dispatch": { "workgroups": "numel(shapes.reduced)" }
}
]
},
{
"id": "multi_axis_rank3",
"priority": 8,
"when": ["not flatParallelCovered", "not contiguousSuffixParallelCovered", "f16Ok(dtypes.T)", "ranks.data == 3", "(attrs.keepdims == 1 and ranks.reduced == 3 and (dim(shapes.reduced, 0) == 1 if hasAxis(attrs.axes, 0, 3) else dim(shapes.reduced, 0) == dim(shapes.data, 0)) and (dim(shapes.reduced, 1) == 1 if hasAxis(attrs.axes, 1, 3) else dim(shapes.reduced, 1) == dim(shapes.data, 1)) and (dim(shapes.reduced, 2) == 1 if hasAxis(attrs.axes, 2, 3) else dim(shapes.reduced, 2) == dim(shapes.data, 2))) or (attrs.keepdims == 0 and ranks.reduced == 1)"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.MultiAxisRank3",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"multiaxis\"",
"rank": 3,
"reduce": ["hasAxis(attrs.axes, 0, 3)", "hasAxis(attrs.axes, 1, 3)", "hasAxis(attrs.axes, 2, 3)"],
"dataShape": "shapes.data",
"outputShape": "shapes.reduced",
"outputRank": "ranks.reduced",
"keepDims": "attrs.keepdims != 0",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "multiAxis",
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
],
"constants": { "scalar": "dtypes.T" }
},
{
"id": "multi_axis_rank4",
"priority": 8,
"when": ["not flatParallelCovered", "not contiguousSuffixParallelCovered", "f16Ok(dtypes.T)", "ranks.data == 4", "attrs.noop_with_empty_axes == 0", "numel(shapes.reduced) == (1 if hasAxis(attrs.axes, 0, 4) else dim(shapes.data, 0)) * (1 if hasAxis(attrs.axes, 1, 4) else dim(shapes.data, 1)) * (1 if hasAxis(attrs.axes, 2, 4) else dim(shapes.data, 2)) * (1 if hasAxis(attrs.axes, 3, 4) else dim(shapes.data, 3))", "((attrs.keepdims == 1 and ranks.reduced == 4) or (attrs.keepdims == 0 and ranks.reduced < 4))"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.MultiAxisRank4",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"multiaxis\"",
"rank": 4,
"reduce": ["hasAxis(attrs.axes, 0, 4)", "hasAxis(attrs.axes, 1, 4)", "hasAxis(attrs.axes, 2, 4)", "hasAxis(attrs.axes, 3, 4)"],
"dataShape": "shapes.data",
"outputShape": "shapes.reduced",
"outputRank": "ranks.reduced",
"keepDims": "attrs.keepdims != 0",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "multiAxis",
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
],
"constants": { "scalar": "dtypes.T" }
},
{
"id": "int32_rank3_axes02_keepdims",
"priority": 30,
"when": ["dtypes.T == \"i32\"", "ranks.data == 3", "attrs.keepdims == 1", "hasAxis(attrs.axes, 0, 3)", "hasAxis(attrs.axes, 2, 3)", "hasAxis(attrs.axes, 1, 3) == false", "dim(shapes.data, 0) > 0", "dim(shapes.data, 2) > 0", "ranks.reduced == 3", "dim(shapes.reduced, 0) == 1", "dim(shapes.reduced, 1) == dim(shapes.data, 1)", "dim(shapes.reduced, 2) == 1"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.Int32Rank3Axes02Keepdims",
"bindings": "axes02",
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "axes02WorkgroupSize" },
"source": {
"shader": "reduce-i32-axes02.wgsl.jinja",
"inputs": { "op": "\"logsumexp\"", "workgroupSize": "axes02WorkgroupSize" }
}
}
],
"derive": {
"axes02WorkgroupSize": "min(tunables.AXES02_WORKGROUP_SIZE, device.limits.maxComputeInvocationsPerWorkgroup, device.limits.maxComputeWorkgroupSizeX)"
}
},
{
"id": "noop_empty_axes",
"priority": 40,
"when": ["dtypes.T == \"f32\"", "attrs.noop_with_empty_axes == 1", "(attrs.axes | length) == 0", "sameShape(shapes.data, shapes.reduced)"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.NoopEmptyAxes",
"source": { "shader": "reduce-noop-empty-axes.wgsl.jinja", "inputs": { "op": "\"identity\"" } },
"bindings": "elementwise",
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
]
},
{
"id": "tree_last_axis_vec4",
"priority": 23,
"demoteWhen": ["rowSerialPreferred"],
"when": ["not flatParallelCovered", "(dtypes.T == \"f32\" or dtypes.T == \"f16\")", "f16Ok(dtypes.T)", "ranks.data >= 1", "reduceAxis == ranks.data - 1", "numel(shapes.reduced) == rows(shapes.data, ranks.data - 1)", "attrs.noop_with_empty_axes == 0", "lastAxisCols >= tunables.ROW_PARALLEL_MIN_COLS", "lastAxisCols % tunables.VECTOR_WIDTH == 0", "treeWorkgroupOk"],
"constants": {
"scalar": "dtypes.T",
"vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"",
"workgroupSize": "min(reduceWorkgroupSize, pow2ceil(ceilDiv(lastAxisCols, tunables.VECTOR_WIDTH)))"
},
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.TreeRowVec4",
"source": {
"shader": "reduce-row-tree.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"vec4": true,
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "lastAxisVec4",
"dispatch": { "workgroups": "lastAxisRows" }
}
]
},
{
"id": "rank0_scalar",
"priority": 40,
"constants": { "axis": 0, "scalar": "dtypes.T" },
"when": ["f16Ok(dtypes.T)", "ranks.data == 0", "ranks.reduced == 0"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.Rank0Scalar",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"axis2d\"",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\"",
"logicalBool": "tensorDtypes.data == \"bool\""
}
},
"bindings": "scalar",
"dispatch": { "x": 1 }
}
]
},
{
"id": "rank1_axis0",
"constants": { "axis": 0, "scalar": "dtypes.T" },
"when": ["not flatParallelCovered", "f16Ok(dtypes.T)", "ranks.data == 1", "reduceAxis == 0", "((attrs.keepdims == 0 and ranks.reduced == 0) or (attrs.keepdims == 1 and ranks.reduced == 1 and dim(shapes.reduced, 0) == 1))"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.Rank1Axis0",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"axis2d\"",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\"",
"logicalBool": "tensorDtypes.data == \"bool\""
}
},
"bindings": "rank1Axis0",
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
]
},
{
"id": "axis1_parallel",
"priority": 20,
"demoteWhen": ["rowSerialPreferred"],
"when": ["not flatParallelCovered", "(dtypes.T == \"f32\" or dtypes.T == \"f16\")", "f16Ok(dtypes.T)", "ranks.data >= 2", "reduceAxis == ranks.data - 1", "numel(shapes.reduced) == rows(shapes.data, ranks.data - 1)", "lastAxisCols >= tunables.ROW_PARALLEL_MIN_COLS", "treeWorkgroupOk"],
"constants": { "workgroupSize": "min(reduceWorkgroupSize, pow2ceil(dim(shapes.data, ranks.data - 1)))" },
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.Axis1Parallel",
"source": {
"shader": "reduce-row-tree.wgsl.jinja",
"inputs": { "op": "\"logsumexp\"", "castF32": "dtypes.T == \"f16\"", "usesF16": "dtypes.T == \"f16\"" }
},
"bindings": "lastAxisScalar",
"dispatch": { "workgroups": "rows(shapes.data, ranks.data - 1)" }
}
]
},
{
"id": "axis_split",
"priority": 24,
"when": ["not flatParallelCovered", "(dtypes.T == \"f32\" or dtypes.T == \"f16\")", "f16Ok(dtypes.T)", "attrs.noop_with_empty_axes == 0", "ranks.data >= 2", "reduceAxis < ranks.data - 1", "not (ranks.data == 2 and reduceAxis == 0)", "axisSplitDim >= tunables.AXIS0_SPLIT_MIN_ROWS", "axisSplitOutputs >= 1", "axisSplitOutputs <= 4096", "axisSplitOutputs == rows(shapes.data, reduceAxis)", "axisSplitPathFits"],
"derive": { "splitCount": "axisSplitCount" },
"constants": { "partialElement": "\"f32\"", "workgroupSize": "reduceWorkgroupSize", "split": "splitCount" },
"intermediates": [{ "id": "partials", "dtype": "float32", "shape": "[3 * splitCount * axisSplitOutputs]" }],
"passes": [
{
"id": "split_reduce",
"name": "ReduceLogSumExp.AxisSplitReduce",
"source": {
"shader": "reduce-axis-split-reduce.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"workgroupSize": "reduceWorkgroupSize",
"split": "splitCount",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "axisSplitReduce",
"dispatch": { "threads": "axisSplitOutputs", "workgroupSize": "reduceWorkgroupSize", "y": "splitCount" }
},
{
"id": "combine",
"name": "ReduceLogSumExp.AxisSplitCombine",
"source": {
"shader": "reduce-axis0-splitk-combine.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"workgroupSize": "reduceWorkgroupSize",
"split": "splitCount",
"outputF16": "dtypes.T == \"f16\""
}
},
"bindings": "axisSplitCombine",
"dispatch": { "threads": "axisSplitOutputs", "workgroupSize": "reduceWorkgroupSize" }
}
]
},
{
"id": "axis_split_tiled_narrow",
"priority": 25,
"when": ["not flatParallelCovered", "(dtypes.T == \"f32\" or dtypes.T == \"f16\")", "f16Ok(dtypes.T)", "attrs.noop_with_empty_axes == 0", "ranks.data >= 2", "reduceAxis < ranks.data - 1", "axisSplitDim >= tunables.AXIS0_SPLIT_MIN_ROWS", "axisSplitOutputs >= 1", "axisSplitOutputs <= 2 * tunables.AXIS_SPLIT_TILE_COLS", "reduceWorkgroupSize % tunables.AXIS_SPLIT_TILE_COLS == 0", "axisSplitOutputs == rows(shapes.data, reduceAxis)", "axisSplitPathFits"],
"derive": { "splitCount": "axisSplitCount" },
"constants": {
"partialElement": "\"f32\"",
"scalar": "dtypes.T",
"workgroupSize": "reduceWorkgroupSize",
"split": "splitCount",
"tileCols": "tunables.AXIS_SPLIT_TILE_COLS"
},
"intermediates": [{ "id": "partials", "dtype": "float32", "shape": "[3 * splitCount * axisSplitOutputs]" }],
"passes": [
{
"id": "split_reduce",
"name": "ReduceLogSumExp.AxisSplitTiledReduce",
"source": {
"shader": "reduce-axis0-tilecols.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"workgroupSize": "reduceWorkgroupSize",
"split": "splitCount",
"tileCols": "tunables.AXIS_SPLIT_TILE_COLS",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "axisSplitReduce",
"dispatch": { "workgroups": "ceilDiv((axisSplitOutputs), (constants.tileCols))", "y": "splitCount" }
},
{
"id": "combine",
"name": "ReduceLogSumExp.AxisSplitCombine",
"source": {
"shader": "reduce-axis0-splitk-combine.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"workgroupSize": "reduceWorkgroupSize",
"split": "splitCount",
"outputF16": "dtypes.T == \"f16\""
}
},
"bindings": "axisSplitCombine",
"dispatch": { "threads": "axisSplitOutputs", "workgroupSize": "reduceWorkgroupSize" }
}
]
},
{
"id": "axis0_splitk",
"priority": 22,
"when": ["not flatParallelCovered", "(dtypes.T == \"f32\" or dtypes.T == \"f16\")", "f16Ok(dtypes.T)", "ranks.data == 2", "reduceAxis == 0", "axis0Rows >= tunables.AXIS0_SPLIT_MIN_ROWS", "dim(shapes.data, 1) > 0", "((attrs.keepdims == 0 and ranks.reduced == 1 and dim(shapes.reduced, 0) == dim(shapes.data, 1)) or (attrs.keepdims == 1 and ranks.reduced == 2 and dim(shapes.reduced, 0) == 1 and dim(shapes.reduced, 1) == dim(shapes.data, 1)))", "axis0SplitPathFits"],
"derive": { "splitCount": "axis0SplitCount" },
"constants": { "partialElement": "\"f32\"", "workgroupSize": "reduceWorkgroupSize", "split": "splitCount" },
"intermediates": [{ "id": "partials", "dtype": "float32", "shape": "[3 * splitCount * dim(shapes.data, 1)]" }],
"passes": [
{
"id": "split_reduce",
"name": "ReduceLogSumExp.Axis0SplitKReduce",
"source": {
"shader": "reduce-axis0-splitk-reduce.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"workgroupSize": "reduceWorkgroupSize",
"split": "splitCount",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "axis0SplitReduce",
"dispatch": { "threads": "dim(shapes.data, 1)", "workgroupSize": "reduceWorkgroupSize", "y": "splitCount" }
},
{
"id": "combine",
"name": "ReduceLogSumExp.Axis0SplitKCombine",
"source": {
"shader": "reduce-axis0-splitk-combine.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"workgroupSize": "reduceWorkgroupSize",
"split": "splitCount",
"outputF16": "dtypes.T == \"f16\""
}
},
"bindings": "axis0SplitCombine",
"dispatch": { "threads": "dim(shapes.data, 1)", "workgroupSize": "reduceWorkgroupSize" }
}
]
},
{
"id": "axis0_tilecols",
"priority": 20,
"when": ["not flatParallelCovered", "(dtypes.T == \"f32\" or dtypes.T == \"f16\")", "f16Ok(dtypes.T)", "ranks.data == 2", "reduceAxis == 0", "axis0Rows >= tunables.AXIS0_TILE_MIN_ROWS", "axis0Cols >= tunables.AXIS0_TILE_MIN_COLS", "((attrs.keepdims == 0 and ranks.reduced == 1 and dim(shapes.reduced, 0) == dim(shapes.data, 1)) or (attrs.keepdims == 1 and ranks.reduced == 2 and dim(shapes.reduced, 0) == 1 and dim(shapes.reduced, 1) == dim(shapes.data, 1)))", "axis0TilePathFits"],
"constants": { "workgroupSize": "reduceWorkgroupSize", "tileCols": "tunables.AXIS0_TILE_COLS" },
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.Axis0TileCols",
"source": {
"shader": "reduce-axis0-tilecols.wgsl.jinja",
"inputs": { "op": "\"logsumexp\"", "castF32": "dtypes.T == \"f16\"", "usesF16": "dtypes.T == \"f16\"" }
},
"bindings": "axis0Parallel",
"dispatch": { "workgroups": "ceilDiv((dim(shapes.data, 1)), (constants.tileCols))" }
}
]
},
{
"id": "all_axes_flat",
"priority": 31,
"constants": {
"scalar": "dtypes.T",
"workgroupSize": "reduceWorkgroupSize",
"flatScalar": "\"vec4<\" ~ dtypes.T ~ \">\" if numel(shapes.data) % tunables.VECTOR_WIDTH == 0 else dtypes.T",
"split": "flatSplitCount"
},
"when": ["flatParallelCovered"],
"intermediates": [{ "id": "partials", "dtype": "float32", "shape": "[3 * flatSplitCount]" }],
"passes": [
{
"id": "flat_partial",
"name": "ReduceLogSumExp.AllAxesFlatPartial",
"source": {
"shader": "reduce-flat-partial-logsumexp.wgsl.jinja",
"inputs": {
"vec4": "numel(shapes.data) % tunables.VECTOR_WIDTH == 0",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "flatPartialF32",
"dispatch": { "x": "flatSplitCount" }
},
{
"id": "combine",
"name": "ReduceLogSumExp.AllAxesFlatCombine",
"source": {
"shader": "reduce-flat-combine-logsumexp.wgsl.jinja",
"inputs": { "outputF16": "dtypes.T == \"f16\"" }
},
"bindings": "flatCombineF32",
"dispatch": { "x": 1 }
}
]
},
{
"id": "rankn_single_axis_generic",
"priority": 12,
"supersededBy": ["axis_split_tiled_narrow", "axis_split", "subgroup_last_axis_vec4", "subgroup_last_axis", "tree_last_axis_vec4"],
"when": ["not flatParallelCovered", "f16Ok(dtypes.T)", "ranks.data >= 3", "attrs.noop_with_empty_axes == 0", "reduceAxis < ranks.data", "numel(shapes.reduced) == rows(shapes.data, reduceAxis)", "((attrs.keepdims == 0 and ranks.reduced == ranks.data - 1) or (attrs.keepdims == 1 and ranks.reduced == ranks.data and dim(shapes.reduced, reduceAxis) == 1))"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.RankNSingleAxisGeneric",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"rankn\"",
"rank": "ranks.data",
"axis": "reduceAxis",
"dataShape": "shapes.data",
"outputShape": "shapes.reduced",
"outputRank": "ranks.reduced",
"keepDims": "attrs.keepdims != 0",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "rankNAxis",
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
],
"constants": { "scalar": "dtypes.T" }
},
{
"id": "subgroup_last_axis_vec4",
"priority": 25,
"requires": { "features": ["subgroups"] },
"when": ["device.wgslLanguageFeatures.has(\"subgroup_id\")", "not flatParallelCovered", "(dtypes.T == \"f32\" or dtypes.T == \"f16\")", "f16Ok(dtypes.T)", "ranks.data >= 1", "reduceAxis == ranks.data - 1", "numel(shapes.reduced) == rows(shapes.data, ranks.data - 1)", "dim(shapes.data, ranks.data - 1) >= 4", "dim(shapes.data, ranks.data - 1) % tunables.VECTOR_WIDTH == 0", "(lastAxisCols >= tunables.SUBGROUP_MIN_COLS or lastAxisRows < tunables.SUBGROUP_SMALL_ROW_LIMIT)", "not rowSerialPreferred"],
"constants": {
"scalar": "dtypes.T",
"vectorScalar": "\"vec4<\" ~ dtypes.T ~ \">\"",
"workgroupSize": "min(reduceWorkgroupSize, max(subgroupWorkgroupFloor, pow2ceil(ceilDiv(lastAxisCols, tunables.VECTOR_WIDTH))))"
},
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.SubgroupRowVec4",
"source": {
"shader": "reduce-row-subgroup.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"vec4": true,
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"subgroupCollectivesWidth": "portable",
"bindings": "lastAxisVec4",
"dispatch": { "workgroups": "rows(shapes.data, ranks.data - 1)" }
}
]
},
{
"id": "subgroup_last_axis",
"priority": 24,
"requires": { "features": ["subgroups"] },
"when": ["device.wgslLanguageFeatures.has(\"subgroup_id\")", "not flatParallelCovered", "(dtypes.T == \"f32\" or dtypes.T == \"f16\")", "f16Ok(dtypes.T)", "ranks.data >= 1", "reduceAxis == ranks.data - 1", "numel(shapes.reduced) == rows(shapes.data, ranks.data - 1)", "dim(shapes.data, ranks.data - 1) > 0", "dim(shapes.data, ranks.data - 1) % tunables.VECTOR_WIDTH != 0", "(lastAxisCols >= tunables.SUBGROUP_MIN_COLS or lastAxisRows < tunables.SUBGROUP_SMALL_ROW_LIMIT)", "not rowSerialPreferred"],
"constants": {
"scalar": "dtypes.T",
"workgroupSize": "min(reduceWorkgroupSize, max(subgroupWorkgroupFloor, pow2ceil(lastAxisCols)))"
},
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.SubgroupRow",
"source": {
"shader": "reduce-row-subgroup.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"vec4": false,
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"subgroupCollectivesWidth": "portable",
"bindings": "lastAxisScalarSubgroup",
"dispatch": { "workgroups": "rows(shapes.data, ranks.data - 1)" }
}
]
},
{
"id": "axis0",
"priority": 0,
"supersededBy": ["axis_split_tiled_narrow", "axis0_splitk", "axis0_tilecols"],
"constants": { "axis": 0, "scalar": "dtypes.T" },
"when": ["not flatParallelCovered", "f16Ok(dtypes.T)", "ranks.data == 2", "reduceAxis == 0", "((attrs.keepdims == 0 and ranks.reduced == 1 and dim(shapes.reduced, 0) == dim(shapes.data, 1)) or (attrs.keepdims == 1 and ranks.reduced == 2 and dim(shapes.reduced, 0) == 1 and dim(shapes.reduced, 1) == dim(shapes.data, 1)))"],
"passes": [
{
"id": "main",
"name": "axis0",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"axis2d\"",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "rank2Serial",
"constants": { "axis": 0 },
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
]
},
{
"id": "axis1",
"priority": 0,
"constants": { "axis": 1, "scalar": "dtypes.T" },
"when": ["not flatParallelCovered", "f16Ok(dtypes.T)", "ranks.data == 2", "reduceAxis == 1", "((attrs.keepdims == 0 and ranks.reduced == 1 and dim(shapes.reduced, 0) == dim(shapes.data, 0)) or (attrs.keepdims == 1 and ranks.reduced == 2 and dim(shapes.reduced, 0) == dim(shapes.data, 0) and dim(shapes.reduced, 1) == 1))"],
"passes": [
{
"id": "main",
"name": "axis1",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"axis2d\"",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "rank2SerialAxis1",
"constants": { "axis": 1 },
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
]
},
{
"id": "all_axes_keepdims",
"priority": 30,
"constants": { "axis": 0, "scalar": "dtypes.T" },
"when": ["not flatParallelCovered", "f16Ok(dtypes.T)", "ranks.data >= 3", "attrs.keepdims == 1", "ranks.reduced == ranks.data", "numel(shapes.reduced) == 1"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.Rank3AllAxesKeepdims",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"axis2d\"",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "fullReduceSerial",
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
]
},
{
"id": "all_axes_no_keepdims",
"priority": 30,
"constants": { "axis": 0, "scalar": "dtypes.T" },
"when": ["not flatParallelCovered", "f16Ok(dtypes.T)", "ranks.data >= 3", "attrs.keepdims == 0", "attrs.noop_with_empty_axes == 0", "ranks.reduced == 0"],
"passes": [
{
"id": "main",
"name": "ReduceLogSumExp.Rank3AllAxesNoKeepdims",
"source": {
"shader": "reduce-serial-axis.wgsl.jinja",
"inputs": {
"op": "\"logsumexp\"",
"indexing": "\"axis2d\"",
"intMode": "dtypes.T == \"i32\"",
"castF32": "dtypes.T == \"f16\"",
"usesF16": "dtypes.T == \"f16\""
}
},
"bindings": "fullReduceSerial",
"dispatch": { "threads": "numel(shapes.reduced)", "workgroupSize": "reduceWorkgroupSize" }
}
]
}
]
}