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refactor: move all llama code to models/llama out of meta reference (#1887)

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# What does this PR do?

Move around bits. This makes the copies from llama-models _much_ easier
to maintain and ensures we don't entangle meta-reference specific
tidbits into llama-models code even by accident.

Also, kills the meta-reference-quantized-gpu distro and rolls
quantization deps into meta-reference-gpu.

## Test Plan

```
LLAMA_MODELS_DEBUG=1 \
  with-proxy llama stack run meta-reference-gpu \
  --env INFERENCE_MODEL=meta-llama/Llama-4-Scout-17B-16E-Instruct \
   --env INFERENCE_CHECKPOINT_DIR=<DIR> \
   --env MODEL_PARALLEL_SIZE=4 \
   --env QUANTIZATION_TYPE=fp8_mixed
```

Start a server with and without quantization. Point integration tests to
it using:

```
pytest -s -v  tests/integration/inference/test_text_inference.py \
   --stack-config http://localhost:8321 --text-model meta-llama/Llama-4-Scout-17B-16E-Instruct
```
This commit is contained in:
Ashwin Bharambe 2025-04-07 15:03:58 -07:00 • committed by GitHub
parent c52ccc4bbd
commit 530d4bdfe1
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85 changed files with 1267 additions and 1683 deletions
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10
llama_stack/models/llama/llama3/chat_format.py
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@ -4,13 +4,6 @@
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# top-level folder for each specific model found within the models/ directory at
# the top-level of this source tree.
import io
import json
import uuid
@ -19,7 +12,7 @@ from typing import Dict, List, Optional, Tuple
from PIL import Image as PIL_Image
from llama_stack.models.llama.datatypes import (
from ..datatypes import (
BuiltinTool,
RawContent,
RawMediaItem,
@ -30,7 +23,6 @@ from llama_stack.models.llama.datatypes import (
ToolCall,
ToolPromptFormat,
)
from .tokenizer import Tokenizer
from .tool_utils import ToolUtils