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it runs at least 🤷
This commit is contained in:
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@ -10,7 +10,6 @@
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import copy
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import math
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import random
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import warnings
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from abc import ABC, abstractmethod
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from collections.abc import Iterable, Mapping, Sequence
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from dataclasses import dataclass
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@ -24,6 +23,7 @@ import torch.nn as nn
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import torchvision.transforms as T
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from PIL import Image
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from transformers import BatchFeature, PretrainedConfig, TensorType
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from typing_extensions import assert_never
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from vllm.config import VllmConfig
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from vllm.config.multimodal import BaseDummyOptions, VideoDummyOptions
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@ -62,7 +62,6 @@ from vllm.multimodal.inputs import (
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from vllm.multimodal.parse import (
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ImageEmbeddingItems,
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ImageProcessorItems,
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ImageSize,
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MultiModalDataItems,
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MultiModalDataParser,
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)
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@ -91,6 +90,7 @@ Image.MAX_IMAGE_PIXELS = None # Disable the limit entirely
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# TODO(nhaber): get 2048 from config
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# TODO(nhaber): does use_thumbnail=True work?
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# TODO(nhaber): mixing images and videos will mess up the "text_prompt_length" calculation.
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IMG_START = "<img>"
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@ -102,6 +102,46 @@ IMG_CONTEXT = "<image>"
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DEFAULT_NUM_TILES = 12
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@dataclass(kw_only=True, frozen=True)
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class Dims:
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height: int
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width: int
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CONV_MERGING = False # This is assumed to be False for now
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PIXEL_SHUFFLE = True # This is assumed to be True for now
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REDUCTION_FACTOR = 2 ** (PIXEL_SHUFFLE + CONV_MERGING)
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def width_and_height_for_max_num_tokens_available(
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*,
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target_num_tokens_post_shuffle: int,
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patch_size: int,
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) -> Dims:
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"""
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TODO(nhaber): optimize this so it squeezes closer to target number of tokens.
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Calculate image dimensions that produce approximately `target` tokens after
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pixel_shuffle.
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With pixel_shuffle enabled, each 2x2 patch grid becomes 1 token, so we
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need 4*B patches to get B tokens.
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Examples:
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>>> dims = width_and_height_for_max_num_tokens_available(B=8192, patch_size=16)
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>>> assert dims.width, dims.height == (2880, 2880)
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>>> assert ((dims.width // 16) * (dims.height // 16) // 4) == 8100 # tokens after shuffle
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"""
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side_pixels = math.isqrt(target_num_tokens_post_shuffle) * REDUCTION_FACTOR * patch_size
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assert isinstance(side_pixels, int) and side_pixels % patch_size == 0
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return Dims(width=side_pixels, height=side_pixels)
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@dataclass
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class DynamicResolutionParams:
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media: Image.Image
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num_tiles: int
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num_embeddings: int
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patch_size: tuple[int, int]
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class NanoNemotronVLImagePixelInputs(TensorSchema):
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"""
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Dimensions:
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@ -313,10 +353,10 @@ class BaseNanoNemotronVLProcessor(ABC):
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self.norm_mean = torch.tensor(config.norm_mean).reshape(1, 3, 1, 1)
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self.norm_std = torch.tensor(config.norm_std).reshape(1, 3, 1, 1)
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def num_image_token(self, *, image_width: int, image_height: int) -> int:
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image_size = math.sqrt(image_width * image_height)
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def num_image_token_per_tile(self, *, tile_width: int, tile_height: int) -> int:
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tile_size = math.sqrt(tile_width * tile_height)
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num_tokens = int(
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(image_size // self.patch_size) ** 2 * (self.downsample_ratio**2)
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(tile_size // self.patch_size) ** 2 * (self.downsample_ratio**2)
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)
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return num_tokens
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@ -342,7 +382,7 @@ class BaseNanoNemotronVLProcessor(ABC):
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) -> int:
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target_ratios = get_internvl_target_ratios(1, max_num_tiles)
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num_patches, _, _ = calculate_internvl_targets(
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num_tiles, _, _ = calculate_internvl_targets(
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orig_width=image_width,
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orig_height=image_height,
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target_ratios=target_ratios,
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@ -350,16 +390,16 @@ class BaseNanoNemotronVLProcessor(ABC):
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use_thumbnail=self.use_thumbnail,
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)
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return num_patches * self.num_image_token(
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image_width=image_width, image_height=image_height
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return num_tiles * self.num_image_token_per_tile(
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tile_width=image_width, tile_height=image_height
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)
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def _images_to_pixel_values_lst(
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self,
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text: list[str],
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text_prompt_length: int,
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images: list[Image.Image],
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max_num_tiles: int,
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) -> list[torch.Tensor]:
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) -> tuple[list[torch.Tensor], list[int]]:
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return [
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image_to_pixel_values(
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image,
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@ -380,8 +420,19 @@ class BaseNanoNemotronVLProcessor(ABC):
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if len(images) == 0:
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image_inputs = {}
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else:
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pixel_values_lst = self._images_to_pixel_values_lst(
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text=text, images=images, max_num_tiles=max_num_tiles
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assert len(text) == 1, (
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"hf_processor is called on the output of get_dummy_text, "
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"which should be a single string"
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)
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text_prompt_length = len(
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self.tokenizer(
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text[0].replace("<image>", ""), add_special_tokens=False
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)["input_ids"]
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)
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pixel_values_lst, token_counts = self._images_to_pixel_values_lst(
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text_prompt_length=text_prompt_length,
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images=images,
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max_num_tiles=max_num_tiles,
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)
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image_inputs = {
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"pixel_values_flat": input_conditioner(
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@ -402,12 +453,10 @@ class BaseNanoNemotronVLProcessor(ABC):
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"same as the number of images"
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)
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for i, pixel_values in enumerate(pixel_values_lst):
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for i, (pixel_values, feature_size) in enumerate(
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zip(pixel_values_lst, token_counts, strict=True)
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):
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num_patches = pixel_values.shape[0]
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feature_size = num_patches * self.num_image_token(
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image_width=pixel_values.shape[1],
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image_height=pixel_values.shape[2],
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)
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image_repl = self.get_image_repl(feature_size, num_patches)
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parts[i] = parts[i].replace("<image>", image_repl.full)
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text = ["".join(parts)]
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@ -431,14 +480,6 @@ class BaseNanoNemotronVLProcessor(ABC):
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raise NotImplementedError
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@dataclass
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class DynamicResolutionParams:
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media: Image.Image
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num_tiles: int
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num_embeddings: int
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patch_size: tuple[int, int]
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class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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CLIP_PIXEL_MEAN = [0.48145466, 0.4578275, 0.40821073]
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CLIP_PIXEL_STD = [0.26862954, 0.26130258, 0.27577711]
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@ -448,6 +489,7 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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config: PretrainedConfig,
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tokenizer: TokenizerLike,
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*args,
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max_model_len: int,
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max_num_tiles: int | None = None,
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min_num_patches: int = 4,
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factor_max: float = 1.0,
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@ -463,6 +505,8 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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super().__init__(
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config=config, tokenizer=tokenizer, max_num_tiles=max_num_tiles, **kwargs
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)
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self.max_model_len = max_model_len
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self._min_num_patches = min_num_patches
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self._factor_max = factor_max
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self._pixel_shuffle = pixel_shuffle
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@ -483,6 +527,10 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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self.norm_std = torch.tensor(self.CLIP_PIXEL_STD).reshape(1, 3, 1, 1)
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self.downsample_ratio = 2 if pixel_shuffle else 1
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feature_size_cache: dict[
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Image.Image, int
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] = {} # TODO(nhaber): Find a less silly way of doing this... Why can't this be a class variable?
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def apply_params(self, params: DynamicResolutionParams) -> torch.Tensor:
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resized_img = params.media.resize(
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(
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@ -515,7 +563,7 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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num_tokens_available: int,
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data_augment: bool = False,
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tiling_augment_prob: float = 0.4,
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) -> DynamicResolutionParams:
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) -> tuple[DynamicResolutionParams, int]:
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"""Process a single media item and return its parameters.
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Args:
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media: The media item to process
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@ -531,8 +579,10 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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)
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orig_width, orig_height = media.width, media.height
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closest_patch_height = round(orig_height / self.patch_size + 0.5)
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closest_patch_width = round(orig_width / self.patch_size + 0.5)
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closest_patch_height = math.ceil(
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orig_height / self.patch_size
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) # TODO(nhaber): Ask Tyler - the previous round + 0.5 code is dangerous [banker's rounding], no? If we flip this back to the round, the max_wh_fill_budget needs to do -1 for each of w;h to be safe
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closest_patch_width = math.ceil(orig_width / self.patch_size)
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patches = closest_patch_height * closest_patch_width
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factor = min(
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@ -660,8 +710,8 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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)
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# Calculate embeddings for the main dynamic resolution image
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num_embeddings = self.num_image_token(
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image_width=target_patch_width, image_height=target_patch_height
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num_embeddings_per_tile = self.num_image_token_per_tile(
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tile_width=target_patch_width, tile_height=target_patch_height
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)
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token_count = target_patch_width * target_patch_height
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@ -681,8 +731,8 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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if area_ratio < self._thumbnail_area_threshold:
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num_tiles += 1 # Add 1 for thumbnail
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# Add embeddings for thumbnail (thumbnail_size x thumbnail_size)
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num_embeddings += self.num_image_token(
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image_width=self._thumbnail_size, image_height=self._thumbnail_size
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num_embeddings += self.num_image_token_per_tile(
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tile_width=self._thumbnail_size, tile_height=self._thumbnail_size
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)
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token_count += (
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self._thumbnail_size
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@ -694,7 +744,7 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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return DynamicResolutionParams(
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media=media,
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num_tiles=num_tiles,
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num_embeddings=num_embeddings,
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num_embeddings=num_embeddings_per_tile,
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patch_size=(target_patch_width, target_patch_height),
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), token_count
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@ -748,7 +798,7 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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media_list: list[Image.Image],
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num_tokens_available: int | None = None,
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data_augment: bool = False,
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) -> list[DynamicResolutionParams]:
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) -> tuple[list[DynamicResolutionParams], list[int]]:
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"""Compute parameters for all media with iterative token budgeting.
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Args:
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@ -782,8 +832,8 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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# changes, I want to make sure we don't get stuck in an infinite loop.
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for _ in range(10):
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# Step 1: Process each media with current token budget
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params = []
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token_counts = []
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params: list[DynamicResolutionParams] = []
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token_counts: list[int] = []
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for media, tokens_for_media in zip(
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media_list, num_tokens_available_per_media
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@ -799,7 +849,12 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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if total_tokens <= num_tokens_available:
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# We're within budget, return the params
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return params
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# Convert from patch count to actual token count after downsampling
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divisor = (4 if self._pixel_shuffle else 1) * (4 if self._conv_merging else 1)
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adjusted_token_counts = [tc // divisor for tc in token_counts]
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for param, feature_size in zip(params, adjusted_token_counts, strict=True):
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self.feature_size_cache[id(param.media)] = feature_size
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return params, adjusted_token_counts
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# Step 3: We're over budget, need to scale down
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# Calculate scaling factor to get under budget
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@ -828,7 +883,7 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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num_tokens_available_per_media = (
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scaled_down_num_tokens_available_per_media
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)
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return params
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assert_never(num_tokens_available_per_media)
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def stack(
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self, images: list[torch.Tensor]
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@ -879,15 +934,18 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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None,
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)
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def max_num_tokens_available(self, text_prompt_length: int) -> int:
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return self.max_model_len - text_prompt_length - 4
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def _images_to_pixel_values_lst(
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self,
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text: list[str],
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text_prompt_length: int,
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images: list[Image.Image],
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max_num_tiles: int,
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) -> list[torch.Tensor]:
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num_tokens_available = 2048 - len(text) - 4
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params_per_image = self.compute_params(
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images, num_tokens_available=num_tokens_available
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) -> tuple[list[torch.Tensor], list[int]]:
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num_tokens_available = self.max_num_tokens_available(text_prompt_length)
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params_per_image, feature_sizes = self.compute_params(
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images, num_tokens_available
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)
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images = []
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for param in params_per_image:
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@ -895,17 +953,12 @@ class DynamicResolutionImageTiler(BaseNanoNemotronVLProcessor):
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if t.ndim == 3:
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t = t.unsqueeze(0)
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images.append(t)
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return images
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return images, feature_sizes
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def __str__(self):
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return f"DynamicResolutionImageTransform(\
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min_num_patches={self._min_num_patches}, \
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patch_size={self.patch_size}, \
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pixel_shuffle={self._pixel_shuffle}, \
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conv_merging={self._conv_merging}, \
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use_thumbnail={self._use_thumbnail}, \
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thumbnail_size={self._thumbnail_size}, \
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thumbnail_area_threshold={self._thumbnail_area_threshold})"
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def get_cached_feature_size(self, image: Image.Image) -> int:
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feature_size = self.feature_size_cache[id(image)]
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del self.feature_size_cache[id(image)]
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return feature_size
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class NanoNemotronVLProcessor(DynamicResolutionImageTiler):
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@ -920,6 +973,7 @@ class NanoNemotronVLProcessor(DynamicResolutionImageTiler):
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config: PretrainedConfig,
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tokenizer: TokenizerLike,
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*,
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max_model_len: int,
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max_num_tiles: int | None = None,
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min_dynamic_patch: int | None = None,
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max_dynamic_patch: int | None = None,
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@ -930,6 +984,7 @@ class NanoNemotronVLProcessor(DynamicResolutionImageTiler):
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super().__init__(
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config=config,
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tokenizer=tokenizer,
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max_model_len=max_model_len,
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max_num_tiles=max_num_tiles,
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min_dynamic_patch=min_dynamic_patch,
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max_dynamic_patch=max_dynamic_patch,
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@ -1205,7 +1260,7 @@ class BaseNanoNemotronVLProcessingInfo(BaseProcessingInfo):
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def get_hf_processor(
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self,
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**kwargs: object,
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) -> BaseNanoNemotronVLProcessor:
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) -> DynamicResolutionImageTiler:
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raise NotImplementedError
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def get_supported_mm_limits(self) -> Mapping[str, int | None]:
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@ -1228,31 +1283,6 @@ class BaseNanoNemotronVLProcessingInfo(BaseProcessingInfo):
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max_num_tiles=max_num_tiles,
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)
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def get_image_size_with_most_features(self, max_num_tiles: int) -> ImageSize:
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processor = self.get_hf_processor()
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base_size = processor.image_size
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target_ratios = get_internvl_target_ratios(1, max_num_tiles)
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largest_feature_size, largest_feature_pinpoint = 0, None
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for wr, hr in target_ratios:
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width, height = base_size * wr, base_size * hr
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feat_size = self.get_num_image_tokens(
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image_width=width,
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image_height=height,
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max_num_tiles=max_num_tiles,
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processor=processor,
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)
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if feat_size > largest_feature_size:
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largest_feature_size = feat_size
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largest_feature_pinpoint = ImageSize(width=width, height=height)
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if largest_feature_size == 0 or largest_feature_pinpoint is None:
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raise ValueError("Cannot have a largest feature size of 0!")
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return largest_feature_pinpoint
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def get_max_image_tokens(self) -> int:
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processor = self.get_hf_processor()
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# Use default max_num_tiles for max tokens calculation
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@ -1277,7 +1307,7 @@ class NanoNemotronVLProcessingInfo(BaseNanoNemotronVLProcessingInfo):
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@property
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def supports_video(self):
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return self.get_hf_processor().supports_video
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return False # TODO(nhaber): add video support
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def get_supported_mm_limits(self):
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video_limit = {"video": None} if self.supports_video else {}
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@ -1300,8 +1330,10 @@ class NanoNemotronVLProcessingInfo(BaseNanoNemotronVLProcessingInfo):
|
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processor = self.get_hf_processor() # we get the CustomProcessor here
|
||||
|
||||
max_image_tokens = self.get_max_image_tokens() * max_images
|
||||
max_total_frames = (seq_len - max_image_tokens) // processor.num_image_token(
|
||||
image_width=256, image_height=256
|
||||
max_total_frames = (
|
||||
seq_len - max_image_tokens
|
||||
) // processor.num_image_token_per_tile(
|
||||
tile_width=256, tile_height=256
|
||||
) # TODO(nhaber): get 256 dynamically
|
||||
max_frames_per_video = max_total_frames // max(max_videos, 1)
|
||||
return max(max_frames_per_video, 1)
|
||||
@ -1313,6 +1345,7 @@ class NanoNemotronVLProcessingInfo(BaseNanoNemotronVLProcessingInfo):
|
||||
tokenizer=self.get_tokenizer(),
|
||||
video_token=self.get_video_token(),
|
||||
video_pruning_rate=self.get_video_pruning_rate(),
|
||||
max_model_len=self.ctx.model_config.max_model_len,
|
||||
**kwargs,
|
||||
)
|
||||
|
||||
@ -1362,17 +1395,8 @@ class NanoNemotronBaseVLMultiModalProcessor(BaseMultiModalProcessor[_I]):
|
||||
if isinstance(images, ImageEmbeddingItems):
|
||||
feature_size = images.get_feature_size(item_idx)
|
||||
else:
|
||||
image_size = images.get_image_size(item_idx)
|
||||
# Extract max_num_tiles from kwargs, default to 12
|
||||
max_num_tiles = hf_processor_mm_kwargs.get(
|
||||
"max_num_tiles", hf_processor.max_num_tiles
|
||||
)
|
||||
feature_size = self.info.get_num_image_tokens(
|
||||
image_width=image_size.width,
|
||||
image_height=image_size.height,
|
||||
max_num_tiles=max_num_tiles,
|
||||
processor=hf_processor,
|
||||
)
|
||||
image = images.get(item_idx)
|
||||
feature_size = hf_processor.get_cached_feature_size(image)
|
||||
|
||||
num_patches = None
|
||||
local_image_num_patches = image_num_patches
|
||||
@ -1447,8 +1471,8 @@ class NanoNemotronVLMultiModalProcessor(
|
||||
video_num_patches = []
|
||||
|
||||
def get_video_replacement_internvl(item_idx: int):
|
||||
feature_size = hf_processor.num_image_token(
|
||||
image_width=256, image_height=256
|
||||
feature_size = hf_processor.num_image_token_per_tile(
|
||||
tile_width=256, tile_height=256
|
||||
) # TODO(nhaber): get 256 dynamically
|
||||
video, metadata = mm_items["video"][item_idx]
|
||||
num_patches = video_num_patches[item_idx]
|
||||
@ -1510,19 +1534,20 @@ class NanoNemotronVLDummyInputsBuilder(BaseDummyInputsBuilder[_I]):
|
||||
mm_counts: Mapping[str, int],
|
||||
mm_options: Mapping[str, BaseDummyOptions] | None = None,
|
||||
) -> MultiModalDataDict:
|
||||
# Use default max_num_tiles for dummy data generation
|
||||
max_num_tiles = 12
|
||||
target_width, target_height = self.info.get_image_size_with_most_features(
|
||||
max_num_tiles
|
||||
)
|
||||
num_images = mm_counts.get("image", 0)
|
||||
processor = self.info.get_hf_processor()
|
||||
B = processor.max_num_tokens_available(text_prompt_length=num_images)
|
||||
target_dims = width_and_height_for_max_num_tokens_available(
|
||||
target_num_tokens_post_shuffle=B,
|
||||
patch_size=processor.patch_size,
|
||||
)
|
||||
|
||||
image_overrides = mm_options.get("image") if mm_options else None
|
||||
|
||||
return {
|
||||
"image": self._get_dummy_images(
|
||||
width=target_width,
|
||||
height=target_height,
|
||||
width=target_dims.width,
|
||||
height=target_dims.height,
|
||||
num_images=num_images,
|
||||
overrides=image_overrides,
|
||||
)
|
||||
@ -1672,33 +1697,36 @@ class NemotronH_Nano_VL_V2(
|
||||
IMG_CONTEXT, add_special_tokens=False
|
||||
)
|
||||
|
||||
def pixel_shuffle(self, x, scale_factor=0.5):
|
||||
n, w, h, c = x.size()
|
||||
# N, W, H, C --> N, W, H * scale, C // scale
|
||||
x = x.view(
|
||||
n,
|
||||
w,
|
||||
int(h * scale_factor),
|
||||
int(c / scale_factor),
|
||||
)
|
||||
# N, W, H * scale, C // scale --> N, H * scale, W, C // scale
|
||||
x = x.permute(0, 2, 1, 3).contiguous()
|
||||
# N, H * scale, W, C // scale -->
|
||||
# N, H * scale, W * scale, C // (scale ** 2)
|
||||
x = x.view(
|
||||
n,
|
||||
int(h * scale_factor),
|
||||
int(w * scale_factor),
|
||||
int(c / (scale_factor * scale_factor)),
|
||||
)
|
||||
if self.ps_version == "v1":
|
||||
warnings.warn(
|
||||
"In ps_version 'v1', the height and width have not "
|
||||
"been swapped back, which results in a transposed image.",
|
||||
stacklevel=2,
|
||||
def pixel_shuffle_dynamic_res(self, x, *, imgs_sizes):
|
||||
scale_factor = self.downsample_ratio
|
||||
patch_dim = self.patch_size
|
||||
seq_lens = torch.prod(imgs_sizes // patch_dim, dim=-1)
|
||||
splits = torch.split(x, seq_lens.tolist(), dim=-2)
|
||||
out = []
|
||||
for i, sv in enumerate(splits):
|
||||
h = imgs_sizes[i][0] // patch_dim
|
||||
w = imgs_sizes[i][1] // patch_dim
|
||||
sv = sv.reshape(sv.shape[0], h, w, -1)
|
||||
|
||||
n, h, w, c = sv.size()
|
||||
|
||||
sv = sv.view(n, h, int(w * scale_factor), int(c / scale_factor))
|
||||
sv = sv.permute(0, 2, 1, 3).contiguous()
|
||||
sv = sv.view(
|
||||
n,
|
||||
int(w * scale_factor),
|
||||
int(h * scale_factor),
|
||||
int(c / (scale_factor * scale_factor)),
|
||||
)
|
||||
else:
|
||||
x = x.permute(0, 2, 1, 3).contiguous()
|
||||
|
||||
if self.ps_version == "v2":
|
||||
sv = sv.permute(0, 2, 1, 3).contiguous()
|
||||
|
||||
sv = sv.reshape(sv.shape[0], -1, sv.shape[-1])
|
||||
out.append(sv)
|
||||
|
||||
x = torch.cat(out, dim=-2)
|
||||
|
||||
return x
|
||||
|
||||
def extract_feature(self, pixel_values):
|
||||
@ -1710,16 +1738,22 @@ class NemotronH_Nano_VL_V2(
|
||||
n = pixel_values.shape[0]
|
||||
vit_embeds_list = []
|
||||
for i in range(0, n, micro_batch_size):
|
||||
vit_embeds = self.vision_model(pixel_values[i : i + micro_batch_size])
|
||||
current = pixel_values[i : i + micro_batch_size]
|
||||
vit_embeds = self.vision_model(current)
|
||||
vit_embeds = vit_embeds.to(dtype=torch.bfloat16)
|
||||
h = w = int(vit_embeds.shape[1] ** 0.5)
|
||||
vit_embeds = vit_embeds.reshape(vit_embeds.shape[0], h, w, -1)
|
||||
vit_embeds = self.pixel_shuffle(
|
||||
vit_embeds, scale_factor=self.downsample_ratio
|
||||
)
|
||||
vit_embeds = vit_embeds.reshape(
|
||||
vit_embeds.shape[0], -1, vit_embeds.shape[-1]
|
||||
)
|
||||
|
||||
# pixel_shuffle_dynamic_res expects patches concatenated along dim=-2,
|
||||
# but vision model outputs (batch, patches, hidden). Process each image
|
||||
# individually to handle this correctly.
|
||||
_, _, h, w = current.shape
|
||||
shuffled_embeds = []
|
||||
for j in range(vit_embeds.shape[0]):
|
||||
single_embed = vit_embeds[j : j + 1] # (1, patches, hidden)
|
||||
single_shuffled = self.pixel_shuffle_dynamic_res(
|
||||
single_embed, imgs_sizes=torch.tensor([(h, w)])
|
||||
)
|
||||
shuffled_embeds.append(single_shuffled)
|
||||
vit_embeds = torch.cat(shuffled_embeds, dim=0)
|
||||
vit_embeds = self.mlp1(vit_embeds)
|
||||
vit_embeds_list.append(vit_embeds)
|
||||
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user