issue/900 - adjust doc text and test script

Author: wooway777

test/infinicore/nn/HOW_TO_USE_GRAPH_RECORDING_TEST.md

@@ -5,7 +5,7 @@
 ### 运行测试
 
 ```bash
-cd /home/zhuyue/codes/InfiniCore
+cd <path_to>/InfiniCore
 python test/infinicore/nn/test_embedding_graph_recording.py
 ```
 
@@ -259,7 +259,7 @@ python test/infinicore/nn/test_embedding_graph_recording.py
 #!/bin/bash
 # quick_check.sh
 
-cd /home/zhuyue/codes/InfiniCore
+cd <path_to>/InfiniCore
 
 echo "=== 1. 代码检查 ==="
 if grep -q "to(cpu_device)" src/infinicore/nn/embedding.cc; then

test/infinicore/nn/test_embedding_graph_recording.py

@@ -15,7 +15,6 @@
 
 import infinicore
 import torch
-import ctypes
 
 
 def test_embedding_graph_recording():
@@ -73,7 +72,7 @@ def test_embedding_graph_recording():
             warmup_input = input_ids_device
 
             # Warmup（图录制前需要先执行一次，包括内存分配）
-            warmup_output = embedding.forward(warmup_input)
+            embedding.forward(warmup_input)
             infinicore.sync_stream()  # 同步确保 warmup 完成
 
             # 预先分配输出张量（CUDA Graph 不支持动态内存分配）