[BACKEND] KUNLUNXIN xpu update to Commit 9855424(20251203) #349

	name: Metax-Build-And-Test

	on:
	push:
	branches: [ "main" ]
	pull_request:
	branches: [ "main" ]

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	metax-build-and-test:
	runs-on: metax
	if: ${{ github.repository == 'FlagTree/flagtree' \|\| github.repository == 'flagos-ai/flagtree' }}
	steps:
	- name: Checkout code (attempt 1)
	id: checkout1
	uses: actions/checkout@v5
	continue-on-error: true

	- name: Sleep before checkout2
	if: steps.checkout1.outcome == 'failure'
	run: \|
	echo "First checkout attempt failed. Sleeping for 120 seconds before retry..."
	sleep 120

	- name: Checkout code (attempt 2)
	id: checkout2
	if: steps.checkout1.outcome == 'failure'
	uses: actions/checkout@v5
	continue-on-error: true

	- name: Sleep before final checkout
	if: steps.checkout1.outcome == 'failure' && steps.checkout2.outcome == 'failure'
	run: \|
	echo "Second checkout attempt failed. Sleeping for 180 seconds before final retry..."
	sleep 180

	- name: Checkout code (final attempt)
	if: steps.checkout1.outcome == 'failure' && steps.checkout2.outcome == 'failure'
	uses: actions/checkout@v5

	- name: Verify checkout success
	if: success()
	run: echo "Checkout completed successfully"

	- name: FlagTree Build on Metax
	shell: bash
	run: \|
	set -x
	pip uninstall -y triton
	source ~/env.sh
	export FLAGTREE_BACKEND=metax
	cd python
	MAX_JOBS=32 python3.10 -m pip install . --no-build-isolation

	- name: FlagTree Test on Metax
	shell: bash
	run: \|
	set -x
	python3.10 -m pytest -s third_party/metax/python/test/unit

Provide feedback