CI test for lora

Pull Request resolved: #12724

Add CI test for LoRA: note, not program-data separated yet.
ghstack-source-id: 297808850

Differential Revision: [D78751767](https://our.internmc.facebook.com/intern/diff/D78751767/)

Author: lucylq

.ci/scripts/test_llama_lora.sh

@@ -0,0 +1,95 @@
+#!/bin/bash
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+set -exu
+# shellcheck source=/dev/null
+source "$(dirname "${BASH_SOURCE[0]}")/utils.sh"
+
+cmake_install_executorch_libraries() {
+    echo "Installing libexecutorch.a, libextension_module.so, libportable_ops_lib.a"
+    rm -rf cmake-out
+    retry cmake --preset llm \
+        -DCMAKE_INSTALL_PREFIX=cmake-out \
+        -DCMAKE_BUILD_TYPE=Release
+    cmake --build cmake-out -j9 --target install --config Release
+}
+
+cmake_build_llama_runner() {
+    echo "Building llama runner"
+    pushd extension/llm/tokenizers
+    echo "Updating tokenizers submodule"
+    git submodule update --init
+    popd
+    dir="examples/models/llama"
+    retry cmake \
+        -DBUILD_TESTING=OFF \
+        -DCMAKE_INSTALL_PREFIX=cmake-out \
+        -DCMAKE_BUILD_TYPE=Release \
+        -Bcmake-out/${dir} \
+        ${dir}
+    cmake --build cmake-out/${dir} -j9 --config Release
+}
+
+cleanup_files() {
+  echo "Deleting downloaded and generated files"
+  rm -rf "${DOWNLOADED_PATH}/"
+  rm result.txt
+}
+
+# Download model artifacts from HF Hub.
+# Hosting in personal repo for now.
+HF_MODEL_REPO="lucylq/llama3_1B_lora"
+DOWNLOADED_PATH=$(
+  bash "$(dirname "${BASH_SOURCE[0]}")/download_hf_hub.sh" \
+    --model_id "${HF_MODEL_REPO}" \
+    --files "adapter_config.json" "adapter_model.pt" "consolidated.00.pth" "params.json" "tokenizer.model"
+)
+
+# Export model.
+$PYTHON_EXECUTABLE -m extension.llm.export.export_llm \
+    base.checkpoint="${DOWNLOADED_PATH}/consolidated.00.pth" \
+    base.params="${DOWNLOADED_PATH}/params.json" \
+    base.adapter_checkpoint="${DOWNLOADED_PATH}/adapter_model.pt" \
+    base.adapter_config="${DOWNLOADED_PATH}/adapter_config.json" \
+    base.tokenizer_path="${DOWNLOADED_PATH}/tokenizer.model" \
+    model.use_kv_cache=true \
+    model.use_sdpa_with_kv_cache=true \
+    model.dtype_override="fp32" \
+    backend.xnnpack.enabled=true \
+    backend.xnnpack.extended_ops=true \
+    export.output_name="llama3_2_1B_lora.pte"
+
+# Build llama runner.
+cmake_install_executorch_libraries
+cmake_build_llama_runner
+
+# Run llama runner
+RUNTIME_ARGS="--model_path=${EXPORTED_MODEL_NAME} --tokenizer_path=${DOWNLOADED_PATH}/tokenizer.model --prompt='What happens if you eat watermelon seeds?' --temperature=0 --seq_len=10 --warmup=1"
+
+NOW=$(date +"%H:%M:%S")
+echo "Starting to run llama runner at ${NOW}"
+# shellcheck source=/dev/null
+cmake-out/examples/models/llama/llama_main ${RUNTIME_ARGS} > result.txt
+NOW=$(date +"%H:%M:%S")
+echo "Finished at ${NOW}"
+
+RESULT=$(cat result.txt)
+EXPECTED_PREFIX="What happens if you eat watermelon seeds? Eating watermelon seeds can be a bit tricky,"
+
+if [[ "${RESULT}" == "${EXPECTED_PREFIX}"* ]]; then
+  echo "Expected result prefix: ${EXPECTED_PREFIX}"
+  echo "Actual result: ${RESULT}"
+  echo "Success"
+  cleanup_files
+else
+  echo "Expected result prefix: ${EXPECTED_PREFIX}"
+  echo "Actual result: ${RESULT}"
+  echo "Failure; results not the same"
+
+  cleanup_files
+  exit 1
+fi