[UnifiedTree]: Add nightly hicache ci for dsa model (#25348)

test/registered/radix_cache/test_unified_radix_hicache_kl.py

@@ -5,8 +5,14 @@ offloading under UnifiedRadixTree, verifying multi-turn cache correctness
 via KL divergence.
 """
 
+import os
+import shutil
+import tempfile
 import unittest
+from types import SimpleNamespace
+from urllib.parse import urlparse
 
+import requests
 from test_unified_radix_cache_kl import UnifiedRadixTreeTestMixin
 
 from sglang.srt.utils import kill_process_tree
@@ -33,6 +39,9 @@ DSV4_FLASH_LAUNCH_TIMEOUT = 3600
 DSV32_MODEL = "deepseek-ai/DeepSeek-V3.2"
 DSV32_LAUNCH_TIMEOUT = 3600
 
+GLM5_MODEL = "zai-org/GLM-5.1-FP8"
+GLM5_LAUNCH_TIMEOUT = 3600
+
 register_cuda_ci(est_time=900, suite="nightly-8-gpu-h200", nightly=True)
 
 
@@ -77,6 +86,8 @@ class TestUnifiedMambaHiCache(UnifiedRadixTreeTestMixin, CustomTestCase):
                 "page_first_direct",
                 "--max-total-tokens",
                 "12000",
+                "--max-mamba-cache-size",
+                "500",
                 "--max-running-requests",
                 "4",
             ],
@@ -158,5 +169,126 @@ class TestUnifiedDeepSeekV4FlashHiCache(UnifiedRadixTreeTestMixin, CustomTestCas
         kill_process_tree(cls.process.pid)
 
 
+class GSM8KTwoPassMixin:
+    """Mixin: run GSM8K twice with flush in between, verify accuracy diff.
+
+    Subclass must provide:
+      - self.base_url
+      - self.model (for logging)
+    """
+
+    gsm8k_threshold: float = 0.90
+    num_gsm8k_questions: int = 200
+    max_accuracy_diff: float = 0.02
+    gsm8k_parallel: int = 40
+
+    def _run_gsm8k(self):
+        from sglang.test.few_shot_gsm8k import run_eval as run_few_shot_gsm8k
+
+        url = urlparse(self.base_url)
+        args = SimpleNamespace(
+            num_shots=10,
+            data_path=None,
+            num_questions=self.num_gsm8k_questions,
+            max_new_tokens=16000,
+            parallel=self.gsm8k_parallel,
+            host=f"http://{url.hostname}",
+            port=int(url.port),
+        )
+        metrics = run_few_shot_gsm8k(args)
+        return metrics["accuracy"]
+
+    def _flush_cache(self):
+        response = requests.post(
+            self.base_url + "/flush_cache",
+            params={"timeout": 30},
+            timeout=40,
+        )
+        response.raise_for_status()
+
+    def test_gsm8k_two_passes(self):
+        """Run GSM8K twice with flush in between, verify accuracy diff <= max_accuracy_diff."""
+        # First pass
+        acc1 = self._run_gsm8k()
+        print(f"[{self.__class__.__name__}] GSM8K pass 1 accuracy: {acc1:.3f}")
+        self.assertGreaterEqual(
+            acc1,
+            self.gsm8k_threshold,
+            f"Pass 1 accuracy {acc1:.3f} < threshold {self.gsm8k_threshold}",
+        )
+
+        # Flush cache
+        self._flush_cache()
+
+        # Second pass
+        acc2 = self._run_gsm8k()
+        print(f"[{self.__class__.__name__}] GSM8K pass 2 accuracy: {acc2:.3f}")
+        self.assertGreaterEqual(
+            acc2,
+            self.gsm8k_threshold,
+            f"Pass 2 accuracy {acc2:.3f} < threshold {self.gsm8k_threshold}",
+        )
+
+        # Verify diff
+        if acc1 > acc2:
+            diff = abs(acc1 - acc2)
+            print(
+                f"[{self.__class__.__name__}] Accuracy diff: {diff:.3f} "
+                f"(max allowed: {self.max_accuracy_diff})"
+            )
+            self.assertLessEqual(
+                diff,
+                self.max_accuracy_diff,
+                f"Accuracy diff {diff:.3f} exceeds max {self.max_accuracy_diff} "
+                f"(pass1={acc1:.3f}, pass2={acc2:.3f})",
+            )
+
+
+class TestGLM5HiCacheL3GSM8K(GSM8KTwoPassMixin, CustomTestCase):
+    """GLM-5.1-FP8 + HiCache L3 (file backend), with HiRadixTree."""
+
+    @classmethod
+    def setUpClass(cls):
+        cls.model = GLM5_MODEL
+        cls.base_url = DEFAULT_URL_FOR_TEST
+        cls.hicache_dir = tempfile.mkdtemp(prefix="hicache_l3_")
+        cls.process = popen_launch_server(
+            cls.model,
+            cls.base_url,
+            timeout=GLM5_LAUNCH_TIMEOUT,
+            other_args=[
+                "--trust-remote-code",
+                "--tp-size",
+                "8",
+                "--page-size",
+                "64",
+                "--mem-fraction-static",
+                "0.85",
+                "--model-loader-extra-config",
+                '{"enable_multithread_load": true, "num_threads": 64}',
+                "--enable-hierarchical-cache",
+                "--hicache-ratio",
+                "2",
+                "--hicache-write-policy",
+                "write_through",
+                "--hicache-storage-prefetch-policy",
+                "wait_complete",
+                "--hicache-io-backend",
+                "direct",
+                "--hicache-mem-layout",
+                "page_first_direct",
+                "--hicache-storage-backend",
+                "file",
+            ],
+            env={"SGLANG_HICACHE_FILE_BACKEND_STORAGE_DIR": cls.hicache_dir},
+        )
+
+    @classmethod
+    def tearDownClass(cls):
+        kill_process_tree(cls.process.pid)
+        if os.path.isdir(cls.hicache_dir):
+            shutil.rmtree(cls.hicache_dir, ignore_errors=True)
+
+
 if __name__ == "__main__":
     unittest.main()