Arm Backend: Add support for ELU.default operator

.ci/docker/ci_commit_pins/optimum-executorch.txt

@@ -1 +1 @@
-eea657ddbdeb1118943a92fb73c289985c3ee1ba
+36e3dd54effb3f6d13d792029609292fdd5502bb

.ci/docker/ci_commit_pins/pytorch.txt

@@ -1 +1 @@
-6fc0ad22f0a07b6f38d138861c56a765d5a9bb02
+e7152ff8a6a929a0db7f3f4a72a5b6d471769cd3

.ci/scripts/build-mediatek-sdk.sh

@@ -14,9 +14,9 @@ build_neuron_backend() {
   export NEURON_BUFFER_ALLOCATOR_LIB=${MEDIATEK_SDK_ROOT}/libneuron_buffer_allocator.so
   export EXECUTORCH_ROOT="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/../.." && pwd)"
 
-
   cd ${EXECUTORCH_ROOT}
   ./backends/mediatek/scripts/mtk_build.sh
+  ./examples/mediatek/mtk_build_examples.sh
 }
 
 build_neuron_backend

.ci/scripts/setup-conda.sh

@@ -9,7 +9,7 @@ set -ex
 
 install_conda() {
   pushd .ci/docker || return
-  ${CONDA_INSTALL} -y --file conda-env-ci.txt
+  ${CONDA_INSTALL} -c conda-forge -y --file conda-env-ci.txt
   popd || return
 }
 

.ci/scripts/setup-linux.sh

@@ -11,6 +11,7 @@ set -exu
 source "$(dirname "${BASH_SOURCE[0]}")/utils.sh"
 
 read -r BUILD_TOOL BUILD_MODE EDITABLE < <(parse_args "$@")
+echo "Build tool: $BUILD_TOOL, Mode: $BUILD_MODE"
 
 # As Linux job is running inside a Docker container, all of its dependencies
 # have already been installed, so we use PyTorch build from source here instead

.ci/scripts/setup-vulkan-linux-deps.sh

@@ -23,6 +23,7 @@ install_swiftshader() {
 
   export VK_ICD_FILENAMES="${_swiftshader_dir}/swiftshader/build/Linux/vk_swiftshader_icd.json"
   export LD_LIBRARY_PATH="${_swiftshader_dir}/swiftshader/build/Linux/"
+  export ETVK_USING_SWIFTSHADER=1
 }
 
 install_vulkan_sdk() {

.ci/scripts/test_backend_linux.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env 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 -eux
+
+SUITE=$1
+FLOW=$2
+ARTIFACT_DIR=$3
+
+REPORT_FILE="$ARTIFACT_DIR/test-report-$FLOW-$SUITE.csv"
+
+echo "Running backend test job for suite $SUITE, flow $FLOW."
+echo "Saving job artifacts to $ARTIFACT_DIR."
+
+# The generic Linux job chooses to use base env, not the one setup by the image
+eval "$(conda shell.bash hook)"
+CONDA_ENV=$(conda env list --json | jq -r ".envs | .[-1]")
+conda activate "${CONDA_ENV}"
+
+export PYTHON_EXECUTABLE=python
+
+# CMake options to use, in addition to the defaults.
+EXTRA_BUILD_ARGS=""
+
+if [[ "$FLOW" == *qnn* ]]; then
+    # Setup QNN sdk and deps - note that this is a bit hacky due to the nature of the
+    # Qualcomm build. TODO (gjcomer) Clean this up once the QNN pybinding integration is
+    # cleaned up.
+    PYTHON_EXECUTABLE=python bash .ci/scripts/setup-linux.sh --build-tool cmake
+    PYTHON_EXECUTABLE=python bash .ci/scripts/setup-qnn-deps.sh
+    PYTHON_EXECUTABLE=python bash .ci/scripts/build-qnn-sdk.sh
+    QNN_X86_LIB_DIR=`realpath build-x86/lib/`
+    QNN_SDK_ROOT="/tmp/qnn/2.28.0.241029"
+    export LD_LIBRARY_PATH"=$QNN_X86_LIB_DIR:$QNN_SDK_ROOT/lib/x86_64-linux-clang/:${LD_LIBRARY_PATH:-}"
+
+    # TODO Get SDK root from install scripts
+    EXTRA_BUILD_ARGS+=" -DEXECUTORCH_BUILD_QNN=ON -DQNN_SDK_ROOT=$QNN_SDK_ROOT"
+fi
+
+if [[ "$FLOW" == *vulkan* ]]; then
+    # Setup swiftshader and Vulkan SDK which are required to build the Vulkan delegate
+    source .ci/scripts/setup-vulkan-linux-deps.sh
+
+    EXTRA_BUILD_ARGS+=" -DEXECUTORCH_BUILD_VULKAN=ON"
+fi
+
+# We need the runner to test the built library.
+PYTHON_EXECUTABLE=python CMAKE_ARGS="$EXTRA_BUILD_ARGS" .ci/scripts/setup-linux.sh --build-tool cmake --build-mode Release --editable true
+
+EXIT_CODE=0
+python -m executorch.backends.test.suite.runner $SUITE --flow $FLOW --report "$REPORT_FILE" || EXIT_CODE=$?
+
+# Generate markdown summary.
+python -m executorch.backends.test.suite.generate_markdown_summary "$REPORT_FILE" > ${GITHUB_STEP_SUMMARY:-"step_summary.md"} --exit-code $EXIT_CODE

.ci/scripts/test_backend_macos.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env 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 -eux
+
+SUITE=$1
+FLOW=$2
+ARTIFACT_DIR=$3
+
+REPORT_FILE="$ARTIFACT_DIR/test-report-$FLOW-$SUITE.csv"
+
+echo "Running backend test job for suite $SUITE, flow $FLOW."
+echo "Saving job artifacts to $ARTIFACT_DIR."
+
+${CONDA_RUN} --no-capture-output pip install awscli==1.37.21
+
+bash .ci/scripts/setup-conda.sh
+eval "$(conda shell.bash hook)"
+
+PYTHON_EXECUTABLE=python
+${CONDA_RUN} --no-capture-output .ci/scripts/setup-macos.sh --build-tool cmake --build-mode Release
+
+EXIT_CODE=0
+${CONDA_RUN} --no-capture-output python -m executorch.backends.test.suite.runner $SUITE --flow $FLOW --report "$REPORT_FILE" || EXIT_CODE=$?
+
+# Generate markdown summary.
+${CONDA_RUN} --no-capture-output python -m executorch.backends.test.suite.generate_markdown_summary "$REPORT_FILE" > ${GITHUB_STEP_SUMMARY:-"step_summary.md"} --exit-code $EXIT_CODE