[None][fix] fix same pp disagg (#6730)

Signed-off-by: Chuang Zhu <111838961+chuangz0@users.noreply.github.com>

cpp/tensorrt_llm/batch_manager/cacheFormatter.cpp

@@ -846,16 +846,23 @@ void CacheFormatter::unformat(TransferSession& session)
     }
     int selfNumLayers = selfConfig.getModelConfig().mNbKvHeadsPerLayer.size();
     int selfPPSize = selfConfig.getParallelConfig().mPipelineParallelism;
+    int destPPSize = destConfig.getParallelConfig().mPipelineParallelism;
+    int destNumLayers = destConfig.getModelConfig().mNbKvHeadsPerLayer.size();
+
+    if (selfPPSize == destPPSize)
+    {
+        return true;
+    }
     if (selfNumLayers % selfPPSize != 0)
     {
-        TLLM_LOG_WARNING("CacheFormatter::inquireSupport: layers must be divisible by pipeline parallelism");
+        TLLM_LOG_WARNING("CacheFormatter::inquireSupport: layers %d must be divisible by pipeline parallelism :%d",
+            selfNumLayers, selfPPSize);
         return false;
     }
-    int destNumLayers = destConfig.getModelConfig().mNbKvHeadsPerLayer.size();
-    int destPPSize = destConfig.getParallelConfig().mPipelineParallelism;
     if (destNumLayers % destPPSize != 0)
     {
-        TLLM_LOG_WARNING("CacheFormatter::inquireSupport: layers must be divisible by pipeline parallelism");
+        TLLM_LOG_WARNING("CacheFormatter::inquireSupport: layers %d must be divisible by pipeline parallelism :%d ",
+            destNumLayers, destPPSize);
         return false;
     }
     return true;

cpp/tensorrt_llm/batch_manager/mlaCacheFormatter.cpp

@@ -583,6 +583,28 @@ void MLACacheFormatter::unformat(TransferSession& session)
         return false;
     }
 
+    int selfNumLayers = selfConfig.getModelConfig().mNbKvHeadsPerLayer.size();
+    int selfPPSize = selfConfig.getParallelConfig().mPipelineParallelism;
+    int destPPSize = destConfig.getParallelConfig().mPipelineParallelism;
+    int destNumLayers = destConfig.getModelConfig().mNbKvHeadsPerLayer.size();
+
+    if (selfPPSize == destPPSize)
+    {
+        return true;
+    }
+    if (selfNumLayers % selfPPSize != 0)
+    {
+        TLLM_LOG_WARNING("CacheFormatter::inquireSupport: layers %d must be divisible by pipeline parallelism :%d",
+            selfNumLayers, selfPPSize);
+        return false;
+    }
+    if (destNumLayers % destPPSize != 0)
+    {
+        TLLM_LOG_WARNING("CacheFormatter::inquireSupport: layers %d must be divisible by pipeline parallelism :%d ",
+            destNumLayers, destPPSize);
+        return false;
+    }
+
     return true;
 }
 } // namespace tensorrt_llm::batch_manager::kv_cache_manager

tests/integration/defs/disaggregated/test_disaggregated.py

@@ -663,13 +663,14 @@ def test_disaggregated_ctxtp2pp2_gentp2pp2(disaggregated_test_root, llm_venv,
 
 
 @pytest.mark.skip_less_device(8)
-@pytest.mark.parametrize("llama_model_root", ['llama-3.1-8b'], indirect=True)
+@pytest.mark.parametrize("llama_model_root", ['TinyLlama-1.1B-Chat-v1.0'],
+                         indirect=True)
 def test_disaggregated_ctxpp4_genpp4(disaggregated_test_root, llm_venv,
                                      disaggregated_example_root,
                                      llama_model_root):
     src_dst_dict = {
         llama_model_root:
-        f"{llm_venv.get_working_directory()}/llama-3.1-models/Meta-Llama-3.1-8B",
+        f"{llm_venv.get_working_directory()}/TinyLlama/TinyLlama-1.1B-Chat-v1.0",
     }
     for src, dst in src_dst_dict.items():
         if not os.path.islink(dst):

tests/integration/test_lists/qa/llm_function_full.txt

@@ -678,7 +678,7 @@ disaggregated/test_disaggregated_single_gpu.py::test_disaggregated_simple_qwen3[
 disaggregated/test_disaggregated_single_gpu.py::test_disaggregated_simple_qwen3[True-False-Qwen3-8B-FP8]
 disaggregated/test_disaggregated_single_gpu.py::test_disaggregated_simple_qwen3[True-True-Qwen3-8B-FP8]
 disaggregated/test_disaggregated.py::test_disaggregated_ctxtp2pp2_gentp2pp2[TinyLlama-1.1B-Chat-v1.0]
-disaggregated/test_disaggregated.py::test_disaggregated_ctxpp4_genpp4[llama-3.1-8b]
+disaggregated/test_disaggregated.py::test_disaggregated_ctxpp4_genpp4[TinyLlama-1.1B-Chat-v1.0]
 disaggregated/test_workers.py::test_workers_conditional_disaggregation[TinyLlama-1.1B-Chat-v1.0]
 disaggregated/test_workers.py::test_workers_kv_cache_events[TinyLlama-1.1B-Chat-v1.0]
 disaggregated/test_workers.py::test_workers_kv_cache_aware_router[TinyLlama-1.1B-Chat-v1.0]

tests/integration/test_lists/test-db/l0_dgx_h200.yml

@@ -30,7 +30,7 @@ l0_dgx_h200:
   - accuracy/test_disaggregated_serving.py::TestLlama3_1_8BInstruct::test_ctx_pp_gen_tp_asymmetric[MMLU-gen_tp=1-ctx_pp=4]
   - accuracy/test_disaggregated_serving.py::TestLlama3_1_8BInstruct::test_ctx_pp_gen_tp_asymmetric[MMLU-gen_tp=2-ctx_pp=4]
   - disaggregated/test_disaggregated.py::test_disaggregated_ctxtp2pp2_gentp2pp2[TinyLlama-1.1B-Chat-v1.0]
-  - disaggregated/test_disaggregated.py::test_disaggregated_ctxpp4_genpp4[llama-3.1-8b]
+  - disaggregated/test_disaggregated.py::test_disaggregated_ctxpp4_genpp4[TinyLlama-1.1B-Chat-v1.0]
   - unittest/_torch/multi_gpu_modeling/test_llama4.py::test_llama4[pp1-ep1-disable_adp-enable_graph-tp8-trtllm-scout]
   - unittest/_torch/multi_gpu_modeling/test_llama4.py::test_llama4[pp1-ep4-enable_adp-enable_graph-tp8-trtllm-scout]
   - unittest/llmapi/test_llm_pytorch.py::test_nemotron_nas_lora