[Ascend]Support of piecewise graph compilation for prefill on NPU (#12287)

Co-authored-by: ronnie_zheng <zl19940307@163.com>

test/srt/ascend/test_ascend_piecewise_graph_prefill.py

@@ -0,0 +1,89 @@
+import unittest
+from urllib.parse import urlparse
+
+from sglang.srt.utils import kill_process_tree
+from sglang.test.few_shot_gsm8k import run_eval as run_eval_few_shot_gsm8k
+from sglang.test.test_utils import (
+    DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
+    DEFAULT_URL_FOR_TEST,
+    CustomTestCase,
+    SimpleNamespace,
+    popen_launch_server,
+    run_bench_one_batch,
+)
+
+MODEL = "Qwen/Qwen2.5-7B-Instruct"
+GSM8K_EXP_ACCURACY = 0.84
+EXP_PREFILL_LATENCY = 0.045
+TOKENS_TO_CAPTURE = [i for i in range(128, 4096, 128)]
+
+
+class TestPiecewiseGraphPrefillCorrectness(CustomTestCase):
+    @classmethod
+    def setUpClass(cls):
+        cls.model = MODEL
+        cls.base_url = DEFAULT_URL_FOR_TEST
+        cls.url = urlparse(DEFAULT_URL_FOR_TEST)
+        cls.process = popen_launch_server(
+            cls.model,
+            cls.base_url,
+            timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
+            other_args=[
+                "--trust-remote-code",
+                "--mem-fraction-static",
+                0.8,
+                "--attention-backend",
+                "ascend",
+                "--cuda-graph-bs",
+                128,
+                "--enable-piecewise-cuda-graph",
+                "--piecewise-cuda-graph-tokens",
+                TOKENS_TO_CAPTURE,
+            ],
+        )
+
+    @classmethod
+    def tearDownClass(cls):
+        kill_process_tree(cls.process.pid)
+
+    def test_gsm8k(self):
+        print(f"##=== Testing accuracy: {self.model} ===##")
+        args = SimpleNamespace(
+            num_shots=5,
+            data_path=None,
+            num_questions=1319,
+            max_new_tokens=512,
+            parallel=128,
+            host=f"http://{self.url.hostname}",
+            port=int(self.url.port),
+        )
+
+        metrics = run_eval_few_shot_gsm8k(args)
+        self.assertGreaterEqual(
+            metrics["accuracy"],
+            GSM8K_EXP_ACCURACY,
+        )
+
+
+class TestPiecewiseGraphPrefillBenchmark(CustomTestCase):
+
+    def test_latency(self):
+        print(f"##=== Testing prefill latency: {MODEL} ===##")
+        prefill_latency, _, _ = run_bench_one_batch(
+            MODEL,
+            other_args=[
+                "--trust-remote-code",
+                "--mem-fraction-static",
+                0.8,
+                "--attention-backend",
+                "ascend",
+                "--enable-piecewise-cuda-graph",
+                "--piecewise-cuda-graph-tokens",
+                TOKENS_TO_CAPTURE,
+            ],
+        )
+        self.assertLess(prefill_latency, EXP_PREFILL_LATENCY)
+
+
+if __name__ == "__main__":
+    unittest.main()

test/srt/run_suite.py

@@ -361,6 +361,7 @@ suite_xpu = {
 suite_ascend = {
     "per-commit-1-npu-a2": [
         TestFile("ascend/test_ascend_graph_tp1_bf16.py", 400),
+        TestFile("ascend/test_ascend_piecewise_graph_prefill.py", 400),
         TestFile("ascend/test_ascend_hicache_mha.py", 400),
         TestFile("ascend/test_ascend_sampling_backend.py", 400),
         TestFile("ascend/test_ascend_tp1_bf16.py", 400),