Split test_intel_amx_attention_backend.py to pass CI of timeout (#11370)

Co-authored-by: Ma Mingfei <mingfei.ma@intel.com>

test/srt/cpu/test_intel_amx_attention_backend_b.py

@@ -0,0 +1,35 @@
+"""
+For intel_amx attention backend FP8 tests
+Usage:
+python3 -m unittest test_intel_amx_attention_backend_1.TestIntelAMXAttnBackendQuant.test_latency_fp8_qwen
+"""
+
+import unittest
+
+from sglang.test.test_utils import (
+    DEFAULT_MODEL_NAME_FOR_TEST_FP8_WITH_MOE,
+    DEFAULT_MODEL_NAME_FOR_TEST_QWEN_FP8,
+    CustomTestCase,
+    intel_amx_benchmark,
+)
+
+
+class TestIntelAMXAttnBackendQuant(CustomTestCase):
+
+    @intel_amx_benchmark(
+        extra_args=["--batch-size", "4", "--mem-fraction-static", "0.1"],
+        min_throughput=150,
+    )
+    def test_latency_fp8_qwen(self):
+        return DEFAULT_MODEL_NAME_FOR_TEST_QWEN_FP8
+
+    @intel_amx_benchmark(
+        extra_args=["--batch-size", "4", "--mem-fraction-static", "0.1"],
+        min_throughput=50,
+    )
+    def test_latency_fp8_moe_model(self):
+        return DEFAULT_MODEL_NAME_FOR_TEST_FP8_WITH_MOE
+
+
+if __name__ == "__main__":
+    unittest.main()