IQ.Pilot Release Commit @ f2a861c

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IQ.Lvbs CI [bot]
2026-09-02 15:07:09 -05:00
parent b42569dbca
commit e8748fd704
5497 changed files with 316070 additions and 179848 deletions

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# Copied from https://github.com/mlcommons/training/blob/637c82f9e699cd6caf108f92efb2c1d446b630e0/single_stage_detector/ssd/model/boxes.py
import torch
from torch import Tensor
from typing import Tuple
def _upcast(t: Tensor) -> Tensor:
# Protects from numerical overflows in multiplications by upcasting to the equivalent higher type
if t.is_floating_point():
return t if t.dtype in (torch.float32, torch.float64) else t.float()
else:
return t if t.dtype in (torch.int32, torch.int64) else t.int()
def box_area(boxes: Tensor) -> Tensor:
"""
Computes the area of a set of bounding boxes, which are specified by their
(x1, y1, x2, y2) coordinates.
Args:
boxes (Tensor[N, 4]): boxes for which the area will be computed. They
are expected to be in (x1, y1, x2, y2) format with
``0 <= x1 < x2`` and ``0 <= y1 < y2``.
Returns:
Tensor[N]: the area for each box
"""
boxes = _upcast(boxes)
return (boxes[:, 2] - boxes[:, 0]) * (boxes[:, 3] - boxes[:, 1])
# implementation from https://github.com/kuangliu/torchcv/blob/master/torchcv/utils/box.py
# with slight modifications
def _box_inter_union(boxes1: Tensor, boxes2: Tensor) -> Tuple[Tensor, Tensor]:
area1 = box_area(boxes1)
area2 = box_area(boxes2)
lt = torch.max(boxes1[:, None, :2], boxes2[:, :2]) # [N,M,2]
rb = torch.min(boxes1[:, None, 2:], boxes2[:, 2:]) # [N,M,2]
wh = _upcast(rb - lt).clamp(min=0) # [N,M,2]
inter = wh[:, :, 0] * wh[:, :, 1] # [N,M]
union = area1[:, None] + area2 - inter
return inter, union
def box_iou(boxes1: Tensor, boxes2: Tensor) -> Tensor:
"""
Return intersection-over-union (Jaccard index) between two sets of boxes.
Both sets of boxes are expected to be in ``(x1, y1, x2, y2)`` format with
``0 <= x1 < x2`` and ``0 <= y1 < y2``.
Args:
boxes1 (Tensor[N, 4]): first set of boxes
boxes2 (Tensor[M, 4]): second set of boxes
Returns:
Tensor[N, M]: the NxM matrix containing the pairwise IoU values for every element in boxes1 and boxes2
"""
inter, union = _box_inter_union(boxes1, boxes2)
iou = inter / union
return iou

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# Copied from https://github.com/mlcommons/training/blob/637c82f9e699cd6caf108f92efb2c1d446b630e0/single_stage_detector/ssd/model/image_list.py
import torch
from torch import Tensor
from typing import List, Tuple
class ImageList(object):
"""
Structure that holds a list of images (of possibly
varying sizes) as a single tensor.
This works by padding the images to the same size,
and storing in a field the original sizes of each image
"""
def __init__(self, tensors: Tensor, image_sizes: List[Tuple[int, int]]):
"""
Args:
tensors (tensor)
image_sizes (list[tuple[int, int]])
"""
self.tensors = tensors
self.image_sizes = image_sizes
def to(self, device: torch.device) -> 'ImageList':
cast_tensor = self.tensors.to(device)
return ImageList(cast_tensor, self.image_sizes)

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# Copied from https://github.com/mlcommons/training/blob/637c82f9e699cd6caf108f92efb2c1d446b630e0/single_stage_detector/ssd/model/transform.py
import torch
from torch import nn, Tensor
from typing import List, Tuple, Dict, Optional
from test.external.mlperf_retinanet.model.image_list import ImageList
@torch.jit.unused
def _get_shape_onnx(image: Tensor) -> Tensor:
from torch.onnx import operators
return operators.shape_as_tensor(image)[-2:]
def _resize_image_and_masks(image: Tensor,
target: Optional[Dict[str, Tensor]] = None,
image_size: Optional[Tuple[int, int]] = None,
) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
image = torch.nn.functional.interpolate(image[None], size=image_size, scale_factor=None, mode='bilinear',
recompute_scale_factor=None, align_corners=False)[0]
if target is None:
return image, target
if "masks" in target:
mask = target["masks"]
mask = torch.nn.functional.interpolate(mask[:, None].float(), size=image_size, scale_factor=None,
recompute_scale_factor=None)[:, 0].byte()
target["masks"] = mask
return image, target
class GeneralizedRCNNTransform(nn.Module):
"""
Performs input / target transformation before feeding the data to a GeneralizedRCNN
model.
The transformations it perform are:
- input normalization (mean subtraction and std division)
- input / target resizing to match image_size
It returns a ImageList for the inputs, and a List[Dict[Tensor]] for the targets
"""
def __init__(self, image_size: Optional[Tuple[int, int]],
image_mean: List[float], image_std: List[float],):
super(GeneralizedRCNNTransform, self).__init__()
self.image_size = image_size
self.image_mean = image_mean
self.image_std = image_std
def forward(self,
images: List[Tensor],
targets: Optional[List[Dict[str, Tensor]]] = None
) -> Tuple[ImageList, Optional[List[Dict[str, Tensor]]]]:
images = list(img for img in images)
if targets is not None:
# make a copy of targets to avoid modifying it in-place
# once torchscript supports dict comprehension
# this can be simplified as follows
# targets = [{k: v for k,v in t.items()} for t in targets]
targets_copy: List[Dict[str, Tensor]] = []
for t in targets:
data: Dict[str, Tensor] = {}
for k, v in t.items():
data[k] = v
targets_copy.append(data)
targets = targets_copy
for i in range(len(images)):
image = images[i]
target_index = targets[i] if targets is not None else None
if image.dim() != 3:
raise ValueError("images is expected to be a list of 3d tensors "
"of shape [C, H, W], got {}".format(image.shape))
image = self.normalize(image)
image, target_index = self.resize(image, target_index)
images[i] = image
if targets is not None and target_index is not None:
targets[i] = target_index
image_sizes = [img.shape[-2:] for img in images]
images = torch.stack(images)
image_sizes_list: List[Tuple[int, int]] = []
for image_size in image_sizes:
assert len(image_size) == 2
image_sizes_list.append((image_size[0], image_size[1]))
image_list = ImageList(images, image_sizes_list)
return image_list, targets
def normalize(self, image: Tensor) -> Tensor:
if not image.is_floating_point():
raise TypeError(
f"Expected input images to be of floating type (in range [0, 1]), "
f"but found type {image.dtype} instead"
)
dtype, device = image.dtype, image.device
mean = torch.as_tensor(self.image_mean, dtype=dtype, device=device)
std = torch.as_tensor(self.image_std, dtype=dtype, device=device)
return (image - mean[:, None, None]) / std[:, None, None]
def torch_choice(self, k: List[int]) -> int:
"""
Implements `random.choice` via torch ops so it can be compiled with
TorchScript. Remove if https://github.com/pytorch/pytorch/issues/25803
is fixed.
"""
index = int(torch.empty(1).uniform_(0., float(len(k))).item())
return k[index]
def resize(self,
image: Tensor,
target: Optional[Dict[str, Tensor]] = None,
) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
h, w = image.shape[-2:]
image, target = _resize_image_and_masks(image, target, self.image_size)
if target is None:
return image, target
bbox = target["boxes"]
bbox = resize_boxes(bbox, (h, w), image.shape[-2:])
target["boxes"] = bbox
return image, target
def postprocess(self,
result: List[Dict[str, Tensor]],
image_shapes: List[Tuple[int, int]],
original_image_sizes: List[Tuple[int, int]]
) -> List[Dict[str, Tensor]]:
if self.training:
return result
for i, (pred, im_s, o_im_s) in enumerate(zip(result, image_shapes, original_image_sizes)):
boxes = pred["boxes"]
boxes = resize_boxes(boxes, im_s, o_im_s)
result[i]["boxes"] = boxes
return result
def __repr__(self) -> str:
format_string = self.__class__.__name__ + '('
_indent = '\n '
format_string += "{0}Normalize(mean={1}, std={2})".format(_indent, self.image_mean, self.image_std)
format_string += "{0}Resize(height={1}, width={2}, mode='bilinear')".format(_indent, self.image_size[0],
self.image_size[1])
format_string += '\n)'
return format_string
def resize_boxes(boxes: Tensor, original_size: List[int], new_size: List[int]) -> Tensor:
ratios = [
torch.tensor(s, dtype=torch.float32, device=boxes.device) /
torch.tensor(s_orig, dtype=torch.float32, device=boxes.device)
for s, s_orig in zip(new_size, original_size)
]
ratio_height, ratio_width = ratios
xmin, ymin, xmax, ymax = boxes.unbind(1)
xmin = xmin * ratio_width
xmax = xmax * ratio_width
ymin = ymin * ratio_height
ymax = ymax * ratio_height
res = torch.stack((xmin, ymin, xmax, ymax), dim=1)
return res

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# Copied from https://github.com/mlcommons/training/blob/637c82f9e699cd6caf108f92efb2c1d446b630e0/single_stage_detector/ssd/model/utils.py
import torch
class Matcher(object):
"""
This class assigns to each predicted "element" (e.g., a box) a ground-truth
element. Each predicted element will have exactly zero or one matches; each
ground-truth element may be assigned to zero or more predicted elements.
Matching is based on the MxN match_quality_matrix, that characterizes how well
each (ground-truth, predicted)-pair match. For example, if the elements are
boxes, the matrix may contain box IoU overlap values.
The matcher returns a tensor of size N containing the index of the ground-truth
element m that matches to prediction n. If there is no match, a negative value
is returned.
"""
BELOW_LOW_THRESHOLD = -1
BETWEEN_THRESHOLDS = -2
__annotations__ = {
'BELOW_LOW_THRESHOLD': int,
'BETWEEN_THRESHOLDS': int,
}
def __init__(self, high_threshold, low_threshold, allow_low_quality_matches=False):
# type: (float, float, bool) -> None
"""
Args:
high_threshold (float): quality values greater than or equal to
this value are candidate matches.
low_threshold (float): a lower quality threshold used to stratify
matches into three levels:
1) matches >= high_threshold
2) BETWEEN_THRESHOLDS matches in [low_threshold, high_threshold)
3) BELOW_LOW_THRESHOLD matches in [0, low_threshold)
allow_low_quality_matches (bool): if True, produce additional matches
for predictions that have only low-quality match candidates. See
set_low_quality_matches_ for more details.
"""
self.BELOW_LOW_THRESHOLD = -1
self.BETWEEN_THRESHOLDS = -2
assert low_threshold <= high_threshold
self.high_threshold = high_threshold
self.low_threshold = low_threshold
self.allow_low_quality_matches = allow_low_quality_matches
def __call__(self, match_quality_matrix):
"""
Args:
match_quality_matrix (Tensor[float]): an MxN tensor, containing the
pairwise quality between M ground-truth elements and N predicted elements.
Returns:
matches (Tensor[int64]): an N tensor where N[i] is a matched gt in
[0, M - 1] or a negative value indicating that prediction i could not
be matched.
"""
if match_quality_matrix.numel() == 0:
# empty targets or proposals not supported during training
if match_quality_matrix.shape[0] == 0:
raise ValueError(
"No ground-truth boxes available for one of the images "
"during training")
raise ValueError(
"No proposal boxes available for one of the images "
"during training")
# match_quality_matrix is M (gt) x N (predicted)
# Max over gt elements (dim 0) to find best gt candidate for each prediction
matched_vals, matches = match_quality_matrix.max(dim=0)
if self.allow_low_quality_matches:
all_matches = matches.clone()
else:
all_matches = None
# Assign candidate matches with low quality to negative (unassigned) values
below_low_threshold = matched_vals < self.low_threshold
between_thresholds = (matched_vals >= self.low_threshold) & (
matched_vals < self.high_threshold
)
matches[below_low_threshold] = self.BELOW_LOW_THRESHOLD
matches[between_thresholds] = self.BETWEEN_THRESHOLDS
if self.allow_low_quality_matches:
assert all_matches is not None
self.set_low_quality_matches_(matches, all_matches, match_quality_matrix)
return matches
def set_low_quality_matches_(self, matches, all_matches, match_quality_matrix):
"""
Produce additional matches for predictions that have only low-quality matches.
Specifically, for each ground-truth find the set of predictions that have
maximum overlap with it (including ties); for each prediction in that set, if
it is unmatched, then match it to the ground-truth with which it has the highest
quality value.
"""
# For each gt, find the prediction with which it has highest quality
highest_quality_foreach_gt, _ = match_quality_matrix.max(dim=1)
# Find highest quality match available, even if it is low, including ties
gt_pred_pairs_of_highest_quality = torch.where(
match_quality_matrix == highest_quality_foreach_gt[:, None]
)
# Example gt_pred_pairs_of_highest_quality:
# tensor([[ 0, 39796],
# [ 1, 32055],
# [ 1, 32070],
# [ 2, 39190],
# [ 2, 40255],
# [ 3, 40390],
# [ 3, 41455],
# [ 4, 45470],
# [ 5, 45325],
# [ 5, 46390]])
# Each row is a (gt index, prediction index)
# Note how gt items 1, 2, 3, and 5 each have two ties
pred_inds_to_update = gt_pred_pairs_of_highest_quality[1]
matches[pred_inds_to_update] = all_matches[pred_inds_to_update]