Johan Alfvén | 673683b | 2022-09-05 09:39:47 +0200 | [diff] [blame] | 1 | # Copyright (C) 2020-2022 Arm Limited or its affiliates. All rights reserved. |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 2 | # |
| 3 | # SPDX-License-Identifier: Apache-2.0 |
| 4 | # |
| 5 | # Licensed under the Apache License, Version 2.0 (the License); you may |
| 6 | # not use this file except in compliance with the License. |
| 7 | # You may obtain a copy of the License at |
| 8 | # |
| 9 | # www.apache.org/licenses/LICENSE-2.0 |
| 10 | # |
| 11 | # Unless required by applicable law or agreed to in writing, software |
| 12 | # distributed under the License is distributed on an AS IS BASIS, WITHOUT |
| 13 | # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | # See the License for the specific language governing permissions and |
| 15 | # limitations under the License. |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 16 | # Description: |
| 17 | # Build a live range graph for tensors in one or more subgraphs. Used for tensor allocation as well as in the scheduler. |
| 18 | # Can work with either a pass packed subgraph or a scheduled subgraph. |
Tim Hall | ffe8e28 | 2021-06-24 18:29:53 +0100 | [diff] [blame] | 19 | from collections import namedtuple |
Louis Verhaard | 226ecaf | 2021-03-30 10:18:28 +0200 | [diff] [blame] | 20 | from typing import List |
| 21 | |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 22 | import numpy as np |
| 23 | |
Louis Verhaard | aee5d75 | 2020-09-30 09:01:52 +0200 | [diff] [blame] | 24 | from .operation import Op |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 25 | from .tensor import MemArea |
Patrik Gustavsson | eca2e95 | 2020-05-27 09:15:11 +0200 | [diff] [blame] | 26 | from .tensor import MemType |
Diego Russo | e8a1045 | 2020-04-21 17:39:10 +0100 | [diff] [blame] | 27 | from .tensor import Tensor |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 28 | from .tensor import TensorPurpose |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 29 | |
| 30 | |
| 31 | class LiveRange: |
Jacob Bohlin | 0628a8c | 2020-08-28 13:25:14 +0200 | [diff] [blame] | 32 | def __init__(self, tens, alignment): |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 33 | self.tensors = [] # Tensors that are assigned to the same LiveRange will be allocated to the same address |
| 34 | self.start_time = 99999999999 |
| 35 | self.end_time = -1 |
| 36 | self.size = 0 |
| 37 | self.name = "" |
Jacob Bohlin | 0628a8c | 2020-08-28 13:25:14 +0200 | [diff] [blame] | 38 | self.alignment = alignment |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 39 | self.mem_area = tens.mem_area if tens else MemArea.Unknown |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 40 | |
| 41 | if tens: |
| 42 | self.add_tensor(tens) |
| 43 | |
| 44 | def __str__(self): |
erik.andersson@arm.com | de6cb64 | 2022-02-02 14:03:15 +0100 | [diff] [blame] | 45 | return ( |
| 46 | f"<live_range.LiveRange: {self.start_time}-{self.end_time}, " |
| 47 | f"size={self.size}, '{self.name}' #:{len(self.tensors)}>" |
| 48 | ) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 49 | |
| 50 | __repr__ = __str__ |
| 51 | |
| 52 | def add_tensor(self, tens): |
| 53 | if self.size == 0: |
| 54 | self.size = tens.storage_size() |
| 55 | self.name = tens.name # LiveRange will be named after the first tensor added |
| 56 | else: |
| 57 | assert ( |
| 58 | self.size >= tens.storage_size() |
| 59 | ), "Tensors assigned to the same LiveRange need to fit the size of the LiveRange." |
| 60 | |
| 61 | self.tensors.append(tens) |
| 62 | |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 63 | def mark_usage(self, op_time, op_length=1): |
| 64 | op_time_start = max(op_time, 0) |
| 65 | op_time_end = op_time + op_length |
Rickard Bolin | fd8b500 | 2022-05-16 09:11:06 +0000 | [diff] [blame] | 66 | if op_time_end < op_time_start: |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 67 | return |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 68 | |
| 69 | self.start_time = min(self.start_time, op_time_start) |
| 70 | self.end_time = max(self.end_time, op_time_end) |
| 71 | |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 72 | def set_buffer_size(self, buffer_size): |
| 73 | self.size = buffer_size |
| 74 | self.mem_area = MemArea.Sram |
| 75 | |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 76 | def overlaps_ranges(self, other): |
| 77 | return max(self.start_time, other.start_time) < min(self.end_time, other.end_time) |
| 78 | |
| 79 | def overlaps_address(self, other): |
| 80 | # Returns the first pair of tensors in this LiveRange and 'other' which have |
| 81 | # overlapping addresses |
| 82 | for tens in self.tensors: |
| 83 | for other_tens in other.tensors: |
| 84 | if max(tens.address, other_tens.address) < min( |
| 85 | tens.address + self.size, other_tens.address + other.size |
| 86 | ): |
| 87 | return True, tens, other_tens |
| 88 | |
| 89 | return False, None, None |
| 90 | |
| 91 | def __lt__(self, other): |
| 92 | if self.start_time != other.start_time: |
| 93 | return self.start_time < other.start_time |
| 94 | if self.end_time != other.end_time: |
| 95 | return self.end_time < other.end_time |
| 96 | if self.size != other.size: |
| 97 | return self.size < other.size |
| 98 | return self.name < other.name |
| 99 | |
| 100 | def set_address(self, address): |
Jacob Bohlin | 1a66697 | 2020-09-11 10:04:15 +0200 | [diff] [blame] | 101 | # Set address of all tensors in LiveRange |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 102 | for tens in self.tensors: |
Jacob Bohlin | 1a66697 | 2020-09-11 10:04:15 +0200 | [diff] [blame] | 103 | tens.address = address |
| 104 | |
| 105 | return address |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 106 | |
| 107 | def get_alignment(self): |
Jacob Bohlin | 0628a8c | 2020-08-28 13:25:14 +0200 | [diff] [blame] | 108 | return self.alignment |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 109 | |
Jacob Bohlin | 0628a8c | 2020-08-28 13:25:14 +0200 | [diff] [blame] | 110 | def set_alignment(self, alignment): |
| 111 | self.alignment = max(self.alignment, alignment) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 112 | |
| 113 | |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 114 | class LiveRangeGraph: |
| 115 | def __init__(self): |
Louis Verhaard | 226ecaf | 2021-03-30 10:18:28 +0200 | [diff] [blame] | 116 | self.lrs: List[LiveRange] = [] # List of all created ranges |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 117 | self.ranges = {} # tens -> range |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 118 | self.processed_subgraphs = set() |
| 119 | self.current_time = 0 |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 120 | self.end_time = None |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 121 | |
Jacob Bohlin | 0628a8c | 2020-08-28 13:25:14 +0200 | [diff] [blame] | 122 | def get_or_create_range(self, tens, alignment=Tensor.AllocationQuantum): |
Jacob Bohlin | 1a66697 | 2020-09-11 10:04:15 +0200 | [diff] [blame] | 123 | # Return the live range of the tensor (or any of its clones) |
| 124 | for existing_tensor, rng in self.ranges.items(): |
| 125 | if tens.equivalent(existing_tensor): |
Jacob Bohlin | 0628a8c | 2020-08-28 13:25:14 +0200 | [diff] [blame] | 126 | rng.set_alignment(alignment) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 127 | return rng |
| 128 | |
| 129 | # No live range found for the tensor, create a new one |
Jacob Bohlin | 0628a8c | 2020-08-28 13:25:14 +0200 | [diff] [blame] | 130 | rng = LiveRange(tens, alignment) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 131 | self.ranges[tens] = rng |
Louis Verhaard | 226ecaf | 2021-03-30 10:18:28 +0200 | [diff] [blame] | 132 | self.lrs.append(rng) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 133 | return rng |
| 134 | |
| 135 | def fuse_ranges(self, in_tens, out_tens): |
| 136 | live_range = self.get_or_create_range(in_tens) |
| 137 | assert out_tens not in self.ranges, out_tens |
| 138 | live_range.add_tensor(out_tens) |
| 139 | self.ranges[out_tens] = live_range |
| 140 | return live_range |
| 141 | |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 142 | def update_endtime(self): |
Louis Verhaard | cc34d5d | 2021-08-19 15:15:36 +0200 | [diff] [blame] | 143 | self.end_time = self.current_time |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 144 | return self.end_time + 1 |
| 145 | |
| 146 | def get_temporal_memory_usage(self, target_mem_area): |
Louis Verhaard | cc34d5d | 2021-08-19 15:15:36 +0200 | [diff] [blame] | 147 | usage = np.zeros(self.update_endtime(), dtype=np.int32) |
erik.andersson@arm.com | de6cb64 | 2022-02-02 14:03:15 +0100 | [diff] [blame] | 148 | for lr in self.lrs: |
| 149 | if lr.mem_area == target_mem_area: |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 150 | # End time is inclusive |
erik.andersson@arm.com | de6cb64 | 2022-02-02 14:03:15 +0100 | [diff] [blame] | 151 | usage[lr.start_time : lr.end_time + 1] += lr.size |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 152 | |
| 153 | return usage |
| 154 | |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 155 | |
Fredrik Svedberg | 0ae2848 | 2021-10-27 13:58:03 +0200 | [diff] [blame] | 156 | def tensor_should_be_ignored(tens, target_mem_area, target_mem_type_set): |
Johan Alfvén | fba0a7d | 2022-10-11 20:41:41 +0200 | [diff] [blame] | 157 | if target_mem_area is None or target_mem_type_set is None: |
| 158 | return False |
Patrik Gustavsson | a151f59 | 2020-10-16 13:59:52 +0200 | [diff] [blame] | 159 | if tens.mem_area != target_mem_area or tens.mem_type not in target_mem_type_set: |
| 160 | return True |
Patrik Gustavsson | a151f59 | 2020-10-16 13:59:52 +0200 | [diff] [blame] | 161 | return False |
| 162 | |
| 163 | |
Johan Alfvén | fba0a7d | 2022-10-11 20:41:41 +0200 | [diff] [blame] | 164 | def _get_ifm_to_fuse(sched_op, target_mem_area=None, target_mem_type_set=None): |
Tim Hall | ffe8e28 | 2021-06-24 18:29:53 +0100 | [diff] [blame] | 165 | def _tensor_should_be_ignored(tens): |
Johan Alfvén | 8d57aaa | 2022-02-04 11:19:17 +0100 | [diff] [blame] | 166 | if tens.ifm_write_protected: |
Fredrik Svedberg | 0ae2848 | 2021-10-27 13:58:03 +0200 | [diff] [blame] | 167 | return True |
| 168 | return tensor_should_be_ignored(tens, target_mem_area, target_mem_type_set) |
Tim Hall | ffe8e28 | 2021-06-24 18:29:53 +0100 | [diff] [blame] | 169 | |
Johan Alfvén | fba0a7d | 2022-10-11 20:41:41 +0200 | [diff] [blame] | 170 | # Check if possible to merge ifm/ofm live ranges of elementwise op |
| 171 | ifm_tens = None |
Jacob Bohlin | 98bfecd | 2021-06-21 17:22:20 +0200 | [diff] [blame] | 172 | if sched_op.op_type.is_elementwise_op(): |
| 173 | elem_op = sched_op.parent_op |
Tim Hall | ffe8e28 | 2021-06-24 18:29:53 +0100 | [diff] [blame] | 174 | if not _tensor_should_be_ignored(elem_op.ofm): |
Jacob Bohlin | 98bfecd | 2021-06-21 17:22:20 +0200 | [diff] [blame] | 175 | # Check if overwriting the inputs can be allowed |
Tim Hall | ffe8e28 | 2021-06-24 18:29:53 +0100 | [diff] [blame] | 176 | OpShapeTens = namedtuple("OpShapeTens", ["op_shape", "tens"]) |
| 177 | outp = OpShapeTens(elem_op.ofm_shapes[0], elem_op.ofm) |
| 178 | inps = [] |
| 179 | if elem_op.ifm is not None: |
| 180 | inps.append(OpShapeTens(elem_op.ifm_shapes[0], elem_op.ifm)) |
| 181 | if elem_op.ifm2 is not None: |
| 182 | inps.append(OpShapeTens(elem_op.ifm_shapes[1], elem_op.ifm2)) |
Patrik Gustavsson | a151f59 | 2020-10-16 13:59:52 +0200 | [diff] [blame] | 183 | |
Tim Hall | ffe8e28 | 2021-06-24 18:29:53 +0100 | [diff] [blame] | 184 | # find an input tensor that can be overwritten by the output |
| 185 | for inp in inps: |
| 186 | if ( |
| 187 | # check op input and output shapes allow overlapping |
| 188 | inp.op_shape == outp.op_shape |
| 189 | # check input tensor is valid |
| 190 | and inp.tens is not None |
| 191 | and inp.tens.shape != [] |
| 192 | and not _tensor_should_be_ignored(inp.tens) |
| 193 | # check input and output tensors are compatible |
| 194 | and inp.tens.format == outp.tens.format |
| 195 | and inp.tens.dtype == outp.tens.dtype |
| 196 | # check input tensor only has one consumer |
| 197 | and len(inp.tens.consumer_list) == 1 |
| 198 | # check output tensor only has one producer |
| 199 | and len(outp.tens.ops) == 1 |
| 200 | ): |
Johan Alfvén | fba0a7d | 2022-10-11 20:41:41 +0200 | [diff] [blame] | 201 | ifm_tens = inp.tens |
Tim Hall | ffe8e28 | 2021-06-24 18:29:53 +0100 | [diff] [blame] | 202 | break |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 203 | |
Johan Alfvén | fba0a7d | 2022-10-11 20:41:41 +0200 | [diff] [blame] | 204 | return ifm_tens |
| 205 | |
| 206 | |
| 207 | def ofm_can_reuse_ifm(sched_op, target_mem_area=None, target_mem_type_set=None): |
| 208 | ifm = _get_ifm_to_fuse(sched_op, target_mem_area, target_mem_type_set) |
| 209 | return ifm is not None |
| 210 | |
| 211 | |
| 212 | def merge_elementwise_op_ranges(sg, sched_op, lr_graph, target_mem_area, target_mem_type_set): |
| 213 | ifm = _get_ifm_to_fuse(sched_op, target_mem_area, target_mem_type_set) |
| 214 | if ifm: |
| 215 | lr_graph.fuse_ranges(ifm, sched_op.parent_op.ofm) |
| 216 | |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 217 | |
| 218 | def extract_live_ranges_from_cascaded_passes( |
Jonas Ohlsson | d857507 | 2022-03-30 10:30:25 +0200 | [diff] [blame] | 219 | sg, |
| 220 | target_mem_area, |
| 221 | target_mem_type_set, |
| 222 | lr_graph=None, |
| 223 | cpu_tensor_alignment=Tensor.AllocationQuantum, |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 224 | ): |
Diego Russo | ea6111a | 2020-04-14 18:41:58 +0100 | [diff] [blame] | 225 | if lr_graph is None: |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 226 | lr_graph = LiveRangeGraph() |
| 227 | |
| 228 | if sg in lr_graph.processed_subgraphs: |
| 229 | # if subgraph has been processed already, return the lr_graph as is |
| 230 | return lr_graph |
| 231 | |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 232 | for cps in sg.cascaded_passes: |
| 233 | cps.time = lr_graph.current_time |
| 234 | |
| 235 | time_for_pass = cps.time |
| 236 | |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 237 | for tens in cps.inputs: |
Fredrik Svedberg | 0ae2848 | 2021-10-27 13:58:03 +0200 | [diff] [blame] | 238 | if tensor_should_be_ignored(tens, target_mem_area, target_mem_type_set): |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 239 | continue |
Tim Hall | b9b515c | 2020-11-01 21:27:19 +0000 | [diff] [blame] | 240 | rng = lr_graph.get_or_create_range(tens, cpu_tensor_alignment) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 241 | rng.mark_usage(time_for_pass) |
| 242 | |
Johan Alfvén | 673683b | 2022-09-05 09:39:47 +0200 | [diff] [blame] | 243 | op_subgraph = cps.passes[0].ops[0].attrs.get("subgraph", None) |
| 244 | op_type = cps.passes[0].ops[0].type |
Patrik Gustavsson | eca2e95 | 2020-05-27 09:15:11 +0200 | [diff] [blame] | 245 | |
Johan Alfvén | 673683b | 2022-09-05 09:39:47 +0200 | [diff] [blame] | 246 | if op_subgraph is not None and MemType.Permanent_CPU not in target_mem_type_set: |
| 247 | if op_type == Op.CustomNpuOp: |
| 248 | # If the primary-op is an NpuOp that means this is where an Npu subgraph |
| 249 | # is called. Go into said subgraph and extract live ranges before continuing. |
| 250 | # Use default allocation alignment of 16 for Npu tensors |
| 251 | lr_graph = _extract_live_ranges_from_schedule( |
| 252 | op_subgraph, target_mem_area, target_mem_type_set, lr_graph |
| 253 | ) |
| 254 | else: |
| 255 | # The op has one or more subgraphs in it (a typical op is the While op) |
| 256 | # Go into all subgraphs and extract live ranges before continuing. |
| 257 | for op_sg in op_subgraph: |
| 258 | lr_graph = extract_live_ranges_from_cascaded_passes( |
| 259 | op_sg, target_mem_area, target_mem_type_set, lr_graph, cpu_tensor_alignment |
| 260 | ) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 261 | # Set the new time after handling the Npu subgraph |
| 262 | time_for_pass = lr_graph.current_time |
| 263 | cps.time = time_for_pass |
| 264 | |
Patrik Gustavsson | a151f59 | 2020-10-16 13:59:52 +0200 | [diff] [blame] | 265 | for tens in cps.intermediates + cps.outputs: |
Fredrik Svedberg | 0ae2848 | 2021-10-27 13:58:03 +0200 | [diff] [blame] | 266 | if tensor_should_be_ignored(tens, target_mem_area, target_mem_type_set): |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 267 | continue |
Tim Hall | b9b515c | 2020-11-01 21:27:19 +0000 | [diff] [blame] | 268 | rng = lr_graph.get_or_create_range(tens, cpu_tensor_alignment) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 269 | rng.mark_usage(time_for_pass) |
| 270 | |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 271 | lr_graph.current_time += 2 |
| 272 | |
| 273 | end_time = 0 |
| 274 | for rng in lr_graph.ranges.values(): |
| 275 | # Find the maximum end time of all live-ranges in the graph |
| 276 | end_time = max(end_time, rng.end_time) |
| 277 | |
| 278 | for tens in sg.output_tensors: |
Fredrik Svedberg | 0ae2848 | 2021-10-27 13:58:03 +0200 | [diff] [blame] | 279 | if tensor_should_be_ignored(tens, target_mem_area, target_mem_type_set): |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 280 | continue |
Tim Hall | b9b515c | 2020-11-01 21:27:19 +0000 | [diff] [blame] | 281 | rng = lr_graph.get_or_create_range(tens, cpu_tensor_alignment) |
Tim Hall | 79d07d2 | 2020-04-27 18:20:16 +0100 | [diff] [blame] | 282 | rng.mark_usage(end_time) |
| 283 | |
| 284 | # Add subgraph to set of processed subgraphs |
| 285 | lr_graph.processed_subgraphs.add(sg) |
| 286 | return lr_graph |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 287 | |
| 288 | |
| 289 | def create_linear_live_range_graph(sg, target_mem_area, target_mem_type_set, lr_graph): |
| 290 | assert lr_graph is not None |
| 291 | sg_time = lr_graph.current_time |
| 292 | for ps in sg.passes: |
| 293 | for tens in ps.inputs + ps.outputs + ps.intermediates: |
| 294 | if tens.purpose == TensorPurpose.Weights or tensor_should_be_ignored( |
Fredrik Svedberg | 0ae2848 | 2021-10-27 13:58:03 +0200 | [diff] [blame] | 295 | tens, target_mem_area, target_mem_type_set |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 296 | ): |
| 297 | continue |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 298 | rng = lr_graph.get_or_create_range(tens) |
| 299 | rng.mark_usage(sg_time) |
| 300 | |
Jacob Bohlin | 98bfecd | 2021-06-21 17:22:20 +0200 | [diff] [blame] | 301 | for _, op_info in sg.schedule.cost_map.items(): |
Tim Hall | d784af7 | 2021-06-08 21:25:57 +0100 | [diff] [blame] | 302 | for tensor in [op_info.npu_weights_tensor, op_info.npu_scales_tensor]: |
Fredrik Svedberg | 0ae2848 | 2021-10-27 13:58:03 +0200 | [diff] [blame] | 303 | if tensor and not (tensor_should_be_ignored(tensor, target_mem_area, target_mem_type_set)): |
Tim Hall | d784af7 | 2021-06-08 21:25:57 +0100 | [diff] [blame] | 304 | rng = lr_graph.get_or_create_range(tensor) |
| 305 | rng.mark_usage(sg_time) |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 306 | |
| 307 | lr_graph.current_time += 1 |
| 308 | return lr_graph |
| 309 | |
| 310 | |
| 311 | def _extract_live_ranges_from_schedule(sg, target_mem_area, target_mem_type_set, lr_graph): |
| 312 | time_for_cascade = {} |
| 313 | for sched_op in sg.sched_ops: |
| 314 | op_info = sg.schedule.cost_map[sched_op] |
| 315 | cascade = op_info.cascade |
| 316 | cascade_info = sg.schedule.cascades.get(cascade, None) |
| 317 | |
Johan Alfvén | 783d364 | 2022-07-19 14:03:27 +0200 | [diff] [blame] | 318 | if cascade_info is None: |
| 319 | # Op is not part of a cascade, check if the ifm can be overwritten by the ofm |
| 320 | merge_elementwise_op_ranges(sg, sched_op, lr_graph, target_mem_area, target_mem_type_set) |
| 321 | |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 322 | time_to_set = time_for_cascade.get(cascade, lr_graph.current_time) |
| 323 | |
| 324 | op_info.time_index = time_to_set |
| 325 | |
| 326 | # Mark usage for all tensors related to this Pass |
| 327 | ps = sched_op.parent_ps |
| 328 | for tens in ps.inputs + ps.outputs + ps.intermediates: |
| 329 | if ( |
| 330 | target_mem_area == MemArea.Sram |
| 331 | and cascade_info |
| 332 | and tens == ps.ifm_tensor |
| 333 | and sched_op in cascade_info.buffers |
| 334 | ): |
| 335 | # This tensor is a rolling buffer in a cascade and the size of the LiveRange needs to be modified |
| 336 | # for enabling temporal memory snapshots without modifying the original Tensor |
| 337 | rng = lr_graph.get_or_create_range(tens) |
| 338 | rng.set_buffer_size(cascade_info.buffers[sched_op].elements() * sched_op.ifm.dtype.size_in_bytes()) |
| 339 | elif ( |
| 340 | tens.purpose == TensorPurpose.Weights |
| 341 | or tens.purpose == TensorPurpose.FSBias |
| 342 | or tens.mem_type not in target_mem_type_set |
| 343 | or tens.mem_area != target_mem_area |
| 344 | ): |
| 345 | continue |
| 346 | |
| 347 | else: |
| 348 | rng = lr_graph.get_or_create_range(tens) |
| 349 | |
| 350 | rng.mark_usage(time_to_set) |
| 351 | |
Rickard Bolin | fd8b500 | 2022-05-16 09:11:06 +0000 | [diff] [blame] | 352 | for idx, weight_tens in enumerate(op_info.buffered_weight_tensors): |
| 353 | if weight_tens.mem_type in target_mem_type_set and weight_tens.mem_area == target_mem_area: |
| 354 | rng = lr_graph.get_or_create_range(weight_tens) |
| 355 | start_time = time_to_set |
| 356 | length = 1 |
| 357 | if weight_tens.pre_buffer: |
| 358 | start_time -= 1 |
| 359 | length += 1 |
| 360 | if len(op_info.buffered_weight_tensors) > 1: |
| 361 | last_idx = len(op_info.ofm_depth_slices) % len(op_info.buffered_weight_tensors) |
| 362 | # Double buffering: reduce end time of the buffer that is not used last |
| 363 | if last_idx != idx: |
| 364 | length -= 1 |
| 365 | rng.mark_usage(start_time, length) |
Tim Hall | d8339a7 | 2021-05-27 18:49:40 +0100 | [diff] [blame] | 366 | |
| 367 | if time_to_set == lr_graph.current_time: |
| 368 | lr_graph.current_time += 2 |
| 369 | |
| 370 | if cascade != 0: |
| 371 | time_for_cascade[cascade] = time_to_set |
| 372 | |
| 373 | end_time = lr_graph.update_endtime() |
| 374 | |
| 375 | for tens in sg.output_tensors: |
| 376 | if tens.mem_type not in target_mem_type_set or tens.mem_area != target_mem_area: |
| 377 | continue |
| 378 | rng = lr_graph.get_or_create_range(tens) |
| 379 | rng.mark_usage(end_time) |
| 380 | |
| 381 | return lr_graph |