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100644 --- a/sam2/automatic_mask_generator.py +++ b/sam2/automatic_mask_generator.py @@ -6,7 +6,7 @@ # Adapted from https://github.com/facebookresearch/segment-anything/blob/main/segment_anything/automatic_mask_generator.py from typing import Any, Dict, List, Optional, Tuple - +from sam2.utils.Track import get_gpu_mem import numpy as np import torch from torchvision.ops.boxes import batched_nms, box_area # type: ignore @@ -222,6 +222,7 @@ def generate(self, image: np.ndarray) -> List[Dict[str, Any]]: return curr_anns def _generate_masks(self, image: np.ndarray) -> MaskData: + logs = [] orig_size = image.shape[:2] crop_boxes, layer_idxs = generate_crop_boxes( orig_size, self.crop_n_layers, self.crop_overlap_ratio @@ -230,9 +231,12 @@ def _generate_masks(self, image: np.ndarray) -> MaskData: # Iterate over image crops data = MaskData() for crop_box, layer_idx in zip(crop_boxes, layer_idxs): + before = get_gpu_mem() crop_data = self._process_crop(image, crop_box, layer_idx, orig_size) + after = get_gpu_mem() data.cat(crop_data) - + logs.append((crop_box, layer_idx, before, after)) + print(logs) # Remove duplicate masks between crops if len(crop_boxes) > 1: # Prefer masks from smaller crops @@ -259,8 +263,18 @@ def _process_crop( x0, y0, x1, y1 = crop_box cropped_im = image[y0:y1, x0:x1, :] cropped_im_size = cropped_im.shape[:2] + mem_before_embed = get_gpu_mem() + print( + f"[layer {crop_layer_idx} | crop {crop_box}] " + f"before embed: {mem_before_embed:.1f} MB" + ) self.predictor.set_image(cropped_im) - + mem_after_embed = get_gpu_mem() + print( + f"[layer {crop_layer_idx} | crop {crop_box}] " + f"after embed: {mem_after_embed:.1f} MB " + f"(+{mem_after_embed - mem_before_embed:.1f} MB)" + ) # Get points for this crop points_scale = np.array(cropped_im_size)[None, ::-1] points_for_image = self.point_grids[crop_layer_idx] * points_scale @@ -311,13 +325,19 @@ def _process_batch( in_labels = torch.ones( in_points.shape[0], dtype=torch.int, device=in_points.device ) + mem_before_fwd = get_gpu_mem() masks, iou_preds, low_res_masks = self.predictor._predict( in_points[:, None, :], in_labels[:, None], multimask_output=self.multimask_output, return_logits=True, ) - + mem_after_fwd = get_gpu_mem() + print( + f"[batch forward] before={mem_before_fwd:.1f} MB | " + f"after={mem_after_fwd:.1f} MB | " + f"diff={mem_after_fwd - mem_before_fwd:.1f} MB" + ) # Serialize predictions and store in MaskData data = MaskData( masks=masks.flatten(0, 1), diff --git a/sam2/utils/Track.py b/sam2/utils/Track.py new file mode 100644 index 000000000..b9e86e141 --- /dev/null +++ b/sam2/utils/Track.py @@ -0,0 +1,19 @@ +import torch +#Track VRAM +def get_gpu_mem(device=None): + """ + Returns current GPU memory usage (allocated) in MB. + Accurate and efficient. + """ + if not torch.cuda.is_available(): + return 0.0 + + if device is None: + device = torch.cuda.current_device() + + torch.cuda.synchronize(device) # ensures accurate timing + + stats = torch.cuda.memory_stats(device) + allocated = stats["allocated_bytes.all.current"] / 1024**2 + + return allocated diff --git a/sam2/utils/amg.py b/sam2/utils/amg.py index 986842960..7e94014b1 100644 --- a/sam2/utils/amg.py +++ b/sam2/utils/amg.py @@ -203,39 +203,36 @@ def generate_crop_boxes( im_size: Tuple[int, ...], n_layers: int, overlap_ratio: float ) -> Tuple[List[List[int]], List[int]]: """ - Generates a list of crop boxes of different sizes. Each layer - has (2**i)**2 boxes for the ith layer. + Generates crop boxes only for the finest (smallest) layer. + The finest layer is the last one: i_layer = n_layers - 1, + which has (2**i_layer)**2 boxes. """ crop_boxes, layer_idxs = [], [] im_h, im_w = im_size short_side = min(im_h, im_w) - - # Original image - crop_boxes.append([0, 0, im_w, im_h]) - layer_idxs.append(0) - + def crop_len(orig_len, n_crops, overlap): return int(math.ceil((overlap * (n_crops - 1) + orig_len) / n_crops)) - for i_layer in range(n_layers): - n_crops_per_side = 2 ** (i_layer + 1) - overlap = int(overlap_ratio * short_side * (2 / n_crops_per_side)) + # Only finest layer (last one) + i_layer = n_layers - 1 + n_crops_per_side = 2 ** (i_layer + 1) + overlap = int(overlap_ratio * short_side * (2 / n_crops_per_side)) - crop_w = crop_len(im_w, n_crops_per_side, overlap) - crop_h = crop_len(im_h, n_crops_per_side, overlap) + crop_w = crop_len(im_w, n_crops_per_side, overlap) + crop_h = crop_len(im_h, n_crops_per_side, overlap) - crop_box_x0 = [int((crop_w - overlap) * i) for i in range(n_crops_per_side)] - crop_box_y0 = [int((crop_h - overlap) * i) for i in range(n_crops_per_side)] + crop_box_x0 = [int((crop_w - overlap) * i) for i in range(n_crops_per_side)] + crop_box_y0 = [int((crop_h - overlap) * i) for i in range(n_crops_per_side)] - # Crops in XYWH format - for x0, y0 in product(crop_box_x0, crop_box_y0): - box = [x0, y0, min(x0 + crop_w, im_w), min(y0 + crop_h, im_h)] - crop_boxes.append(box) - layer_idxs.append(i_layer + 1) + # Crops in XYWH format (only finest layer) + for x0, y0 in product(crop_box_x0, crop_box_y0): + box = [x0, y0, min(x0 + crop_w, im_w), min(y0 + crop_h, im_h)] + crop_boxes.append(box) + layer_idxs.append(i_layer) return crop_boxes, layer_idxs - def uncrop_boxes_xyxy(boxes: torch.Tensor, crop_box: List[int]) -> torch.Tensor: x0, y0, _, _ = crop_box offset = torch.tensor([[x0, y0, x0, y0]], device=boxes.device)