feat: 实现明文版hnsw算法和最优参数

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2025-07-24 18:45:50 +08:00
parent bc92fc704f
commit 2a376b920b
3 changed files with 651 additions and 43 deletions

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test_fhe_hnsw.py Executable file
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#!/usr/bin/env python3
"""
FHE HNSW并行测试脚本 - 多进程版本
测试密文态HNSW实现的稳定性和准确率
支持多进程并行执行充分利用服务器CPU资源
运行100次记录≥90%准确率的成功率和结果长度分布
"""
import subprocess
import json
import time
import os
import multiprocessing as mp
from pathlib import Path
from collections import defaultdict
# 正确答案
CORRECT_ANSWER = [93, 94, 90, 27, 87, 50, 47, 40, 78, 28]
def calculate_accuracy(result, correct):
"""计算准确率:匹配元素数量 / 总元素数量"""
matches = len(set(result) & set(correct))
return matches / len(correct) * 100
def run_single_test(test_id, data_bit_width="12", timeout_minutes=30):
"""运行单次FHE HNSW测试供多进程调用"""
# 为每个进程创建独立的输出文件
output_file = f"./test_fhe_output_{test_id}_{os.getpid()}.jsonl"
cmd = [
"./enc",
"--algorithm",
"hnsw",
"--data-bit-width",
data_bit_width,
"--predictions",
output_file,
]
start_time = time.time()
try:
result = subprocess.run(
cmd, capture_output=True, text=True, timeout=timeout_minutes * 60
)
test_time = time.time() - start_time
if result.returncode != 0:
return {
"test_id": test_id,
"result": None,
"error": f"Command failed: {result.stderr[:200]}",
"time_minutes": test_time / 60,
}
# 读取结果
if not Path(output_file).exists():
return {
"test_id": test_id,
"result": None,
"error": "Output file not found",
"time_minutes": test_time / 60,
}
with open(output_file, "r") as f:
output = json.load(f)
answer = output["answer"]
# 清理临时文件
Path(output_file).unlink(missing_ok=True)
# 计算准确率
accuracy = calculate_accuracy(answer, CORRECT_ANSWER)
return {
"test_id": test_id,
"result": answer,
"length": len(answer),
"accuracy": accuracy,
"success": accuracy >= 90,
"time_minutes": test_time / 60,
"error": None,
}
except subprocess.TimeoutExpired:
# 清理临时文件
Path(output_file).unlink(missing_ok=True)
return {
"test_id": test_id,
"result": None,
"error": "timeout",
"time_minutes": timeout_minutes,
}
except Exception as e:
# 清理临时文件
Path(output_file).unlink(missing_ok=True)
return {
"test_id": test_id,
"result": None,
"error": str(e),
"time_minutes": (time.time() - start_time) / 60,
}
def print_progress(completed, total, start_time):
"""打印进度信息"""
if completed == 0:
return
elapsed = time.time() - start_time
avg_time = elapsed / completed
remaining_time = avg_time * (total - completed)
print(
f"\r🔄 进度: {completed}/{total} ({completed/total*100:.1f}%) "
f"| 已用时: {elapsed/3600:.1f}h | 预计剩余: {remaining_time/3600:.1f}h",
end="",
flush=True,
)
def main():
"""主测试函数"""
print("🚀 FHE HNSW 并行批量测试脚本")
print(f"🎯 正确答案: {CORRECT_ANSWER}")
print("📊 运行100次测试记录准确率和结果长度分布")
print("🔧 支持多进程并行执行")
# 检查enc二进制文件是否存在
if not Path("./enc").exists():
print("\n❌ 找不到 ./enc 二进制文件,请先编译项目:")
print(" cargo build --release --bin enc")
return
# 获取CPU核心数并设置进程数
cpu_cores = mp.cpu_count()
# 考虑到FHE运算的内存密集性使用核心数的一半避免内存不足
num_processes = 8
timeout_minutes = 45 # 增加超时时间到45分钟
print(f"💻 使用 {num_processes} 个并行进程")
print(f"⏰ 单次测试超时时间: {timeout_minutes} 分钟")
print(
f"⏱️ 预计总时间: {100 * 15 / num_processes / 60:.1f}-{100 * 25 / num_processes / 60:.1f} 小时"
)
print()
print("=" * 80)
print("🔬 开始FHE HNSW并行测试 (data-bit-width=12)")
print("=" * 80)
start_time = time.time()
# 创建进程池并执行测试
test_ids = list(range(1, 101)) # 1-100
with mp.Pool(processes=num_processes) as pool:
# 创建异步任务
async_results = []
for test_id in test_ids:
async_result = pool.apply_async(
run_single_test, (test_id, "12", timeout_minutes)
)
async_results.append(async_result)
# 收集结果并显示进度
results = []
completed = 0
print_progress(completed, len(test_ids), start_time)
for async_result in async_results:
try:
result = async_result.get(
timeout=timeout_minutes * 60 + 60
) # 额外1分钟缓冲
results.append(result)
completed += 1
print_progress(completed, len(test_ids), start_time)
except mp.TimeoutError:
# 进程级别超时
results.append(
{
"test_id": len(results) + 1,
"result": None,
"error": "process_timeout",
"time_minutes": timeout_minutes,
}
)
completed += 1
print_progress(completed, len(test_ids), start_time)
print() # 换行
total_elapsed = time.time() - start_time
# 分析结果
print("\n" + "=" * 80)
print("📈 测试结果分析")
print("=" * 80)
# 统计变量
valid_results = [r for r in results if r["result"] is not None]
success_count = sum(1 for r in valid_results if r["success"])
length_distribution = defaultdict(int)
error_distribution = defaultdict(int)
# 统计错误类型
for r in results:
if r["error"]:
error_type = r["error"]
if "timeout" in error_type.lower():
error_distribution["timeout"] += 1
elif "failed" in error_type.lower():
error_distribution["failed"] += 1
else:
error_distribution["other"] += 1
else:
length_distribution[r["length"]] += 1
# 基本统计
total_tests = len(results)
valid_tests = len(valid_results)
if valid_tests == 0:
print("❌ 没有有效的测试结果")
return
success_rate = success_count / valid_tests * 100
avg_accuracy = sum(r["accuracy"] for r in valid_results) / valid_tests
avg_length = sum(r["length"] for r in valid_results) / valid_tests
avg_time_per_test = sum(r["time_minutes"] for r in results) / total_tests
print(f"总测试次数: {total_tests}")
print(f"有效测试次数: {valid_tests}")
print(f"成功次数 (≥90%准确率): {success_count}")
print(f"成功率: {success_rate:.1f}%")
print(f"平均准确率: {avg_accuracy:.1f}%")
print(f"平均结果长度: {avg_length:.1f}")
print(f"平均每次测试时间: {avg_time_per_test:.1f}分钟")
print(f"总测试时间: {total_elapsed/3600:.1f}小时")
print(f"并行加速比: {100 * avg_time_per_test / 60 / (total_elapsed/3600):.1f}x")
# 错误统计
if error_distribution:
print("\n❌ 错误分布:")
for error_type, count in error_distribution.items():
print(f" {error_type}: {count}")
# 结果长度分布
if length_distribution:
print("\n📊 结果长度分布:")
for length in sorted(length_distribution.keys()):
count = length_distribution[length]
percentage = count / valid_tests * 100
bar = "" * (count // 2) if count > 0 else ""
print(f" 长度 {length:2d}: {count:3d}次 ({percentage:5.1f}%) {bar}")
# 结论
print()
if success_rate >= 50:
print("✅ 测试通过! FHE HNSW实现稳定性良好")
print(f" - 成功率: {success_rate:.1f}% (≥50%)")
print(f" - 平均准确率: {avg_accuracy:.1f}%")
if avg_length >= 9.5:
print(f" - 平均结果长度: {avg_length:.1f} (接近10)")
else:
print(f" - 平均结果长度: {avg_length:.1f} (需要改进)")
else:
print("❌ 测试未通过,需要进一步优化")
print(f" - 成功率: {success_rate:.1f}% (<50%)")
print(f" - 平均准确率: {avg_accuracy:.1f}%")
# 保存详细结果
report_file = "fhe_hnsw_parallel_test_report.json"
with open(report_file, "w") as f:
json.dump(
{
"summary": {
"total_tests": total_tests,
"valid_tests": valid_tests,
"success_count": success_count,
"success_rate": success_rate,
"avg_accuracy": avg_accuracy,
"avg_length": avg_length,
"avg_time_minutes": avg_time_per_test,
"total_time_hours": total_elapsed / 3600,
"num_processes": num_processes,
"cpu_cores": cpu_cores,
"speedup": 100 * avg_time_per_test / 60 / (total_elapsed / 3600),
},
"length_distribution": dict(length_distribution),
"error_distribution": dict(error_distribution),
"detailed_results": results,
"correct_answer": CORRECT_ANSWER,
},
f,
indent=2,
)
print(f"\n📁 详细报告已保存到: {report_file}")
# 显示最好和最坏的几个结果
if valid_results:
print("\n🏆 最高准确率的5个结果:")
best_results = sorted(valid_results, key=lambda x: x["accuracy"], reverse=True)[
:5
]
for i, r in enumerate(best_results, 1):
print(
f" {i}. 测试#{r['test_id']:3d}: 准确率{r['accuracy']:5.1f}% 长度{r['length']:2d} ({r['time_minutes']:4.1f}分钟)"
)
print("\n⚠️ 最低准确率的5个结果:")
worst_results = sorted(valid_results, key=lambda x: x["accuracy"])[:5]
for i, r in enumerate(worst_results, 1):
print(
f" {i}. 测试#{r['test_id']:3d}: 准确率{r['accuracy']:5.1f}% 长度{r['length']:2d} ({r['time_minutes']:4.1f}分钟)"
)
if __name__ == "__main__":
try:
# 设置多进程启动方法Linux上默认是fork但spawn更安全
mp.set_start_method("spawn", force=True)
main()
except KeyboardInterrupt:
print("\n\n⏹️ 测试被用户中断")
# 清理可能的临时文件
for f in Path(".").glob("test_fhe_output_*.jsonl"):
f.unlink(missing_ok=True)
except Exception as e:
print(f"\n💥 程序异常: {e}")
# 清理可能的临时文件
for f in Path(".").glob("test_fhe_output_*.jsonl"):
f.unlink(missing_ok=True)