OwnerSunshine530
2268fa6cf3
profile显示embedding查表现为头号瓶颈(32%)。torch.unique去重后只查唯一sign 再按逆索引展开,数学逐位等价(AUC不变),省最贵的大表随机gather。bench --dedup-emb。 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
344 lines
14 KiB
Python
344 lines
14 KiB
Python
"""本地测量闭环：设置 infer.CONFIG，跑推理，同步计时，打印 AUC/PCOC/延迟/总分。
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不进提交包。**以子进程方式运行**（AI Studio 内核禁止 import torch）：
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%cd /home/aistudio/code
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!python bench.py --diag # 诊断：序列长度分布 + sign-id 超界比例
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!python bench.py --smoke 50 # 冒烟：只跑前 50 batch
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!python bench.py # 默认基线
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!python bench.py --fp32 # FP32 天花板
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!python bench.py --rebuild # 强制重建过滤缓存
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只保留“测试用户”的数据：不同用户被因果 mask 完全隔离，非测试用户的前向输出
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不参与打分；过滤掉它们对测试样本的 AUC/PCOC 没有任何影响，却能把数据量从
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924 万条降到一小部分。
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缓存用**文本 CSV**而非 pickle：容器 cgroup 内存有限，pickle.dump 大对象的 memo
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会瞬间撑爆内存被静默 OOM-kill；逐行写 CSV 内存几乎不涨，再用 load_sample_files
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读回，稳。
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"""
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import os
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import sys
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import time
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from collections import defaultdict
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from pathlib import Path
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# baseline 把依赖装在 --target 目录（非默认 site-packages），import 前先加 sys.path
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for _p in ("/home/aistudio/external-libraries", "/home/aistudio/libraries",
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os.path.abspath("../libraries"), os.path.abspath("./libraries")):
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if os.path.isdir(_p) and _p not in sys.path:
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sys.path.insert(0, _p)
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import numpy as np
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import torch
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from torch.utils.data import DataLoader
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import infer # 同目录
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def _test_user_ids(test_csv):
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"""从 test.csv 读出所有测试用户 id（第 2 列 userid）。"""
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users = set()
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with open(test_csv) as f:
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for line in f:
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line = line.strip()
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if not line:
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continue
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parts = line.split(",")
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if len(parts) >= 2:
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users.add(int(parts[1]))
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return users
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def _stream_build(ref, cache_csv_path=None):
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"""流式过滤：构建 item_dict/user_seq；若给 cache_csv_path，同时把保留的历史行
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原样逐行写入（低内存文本缓存，test.csv 直接复用、不进缓存）。
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"""
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test_csv = ref / "test.csv"
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history = ref / "history"
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test_users = _test_user_ids(test_csv)
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files = (sorted(history.glob("*.csv")) if history.exists() else []) + [test_csv]
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print(f"[BENCH] 流式过滤加载 {len(files)} 个文件（仅保留 {len(test_users)} 个测试用户）...")
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item_dict = {}
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user_logs = defaultdict(list)
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cf = open(cache_csv_path, "w") if cache_csv_path else None
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try:
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for fp in files:
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has_clk = infer._detect_has_clk(fp)
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min_parts = 5 if has_clk else 4
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is_test = (Path(fp).name == test_csv.name)
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kept = 0
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with open(fp) as f:
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for raw in f:
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line = raw.strip()
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if not line:
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continue
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parts = line.split(",")
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if len(parts) < min_parts:
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continue
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userid = int(parts[1])
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if userid not in test_users:
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continue
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if cf is not None and not is_test: # 只缓存历史行
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cf.write(raw if raw.endswith("\n") else raw + "\n")
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logid = int(parts[0])
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adid = int(parts[2])
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if has_clk:
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clk = int(parts[3])
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timestamp = int(parts[4])
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fs = 5
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else:
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clk = 0
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timestamp = int(parts[3])
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fs = 4
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signs, slots = [], []
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for pair in parts[fs:]:
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if ":" in pair:
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s, sl = pair.split(":", 1)
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signs.append(int(s))
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slots.append(int(sl))
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item_dict[logid] = {
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"logid": logid, "userid": userid, "adid": adid,
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"clk": clk, "timestamp": timestamp,
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"signs": np.array(signs, dtype=np.int64),
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"slots": np.array(slots, dtype=np.int64),
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}
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user_logs[userid].append((timestamp, logid))
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kept += 1
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print(f" {Path(fp).name}: has_clk={has_clk}, kept={kept}")
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finally:
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if cf is not None:
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cf.flush()
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os.fsync(cf.fileno())
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cf.close()
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user_seq = {}
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for u, logs in user_logs.items():
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logs.sort(key=lambda x: x[0])
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user_seq[u] = [lid for _, lid in logs]
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print(f"[BENCH] 过滤后：{len(item_dict)} 条记录，{len(user_seq)} 个用户")
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if cache_csv_path:
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print(f"[BENCH] 已缓存历史行 -> {cache_csv_path}（下次快速读取）")
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return item_dict, user_seq
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def _get_data(cur, ref, rebuild=False):
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"""取过滤后的 (item_dict, user_seq)，优先读 CSV 缓存。"""
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cache_csv = cur / "cache_filtered_history.csv"
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test_csv = ref / "test.csv"
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if cache_csv.exists() and not rebuild:
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print(f"[BENCH] 读取过滤缓存(CSV)：{cache_csv}")
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try:
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return infer.load_sample_files([str(cache_csv), str(test_csv)])
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except Exception as e:
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print(f"[BENCH][WARN] 缓存读取失败（{e}），重新构建")
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return _stream_build(ref, cache_csv_path=str(cache_csv))
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def run_diag(rebuild=False):
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"""诊断：测试用户序列长度分布 + sign-id 是否超界（判断上下文与 modulo 的价值）。"""
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cur = Path(__file__).parent
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ref = cur / "dataset"
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item_dict, user_seq = _get_data(cur, ref, rebuild=rebuild)
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lens = np.array([len(v) for v in user_seq.values()]) if user_seq else np.array([0])
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print(f"[DIAG] 测试用户数={len(user_seq)} 总记录数={len(item_dict)}")
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print(f"[DIAG] 每用户序列长度 min/median/mean/max = "
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f"{int(lens.min())}/{int(np.median(lens))}/{lens.mean():.1f}/{int(lens.max())}")
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print(f"[DIAG] 序列长度>1 的用户占比 = {(lens > 1).mean():.1%}")
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VOCAB = 5_000_000
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mx, over, tot = 0, 0, 0
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for rec in item_dict.values():
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s = rec["signs"]
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if s.size:
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m = int(s.max())
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if m > mx:
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mx = m
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over += int((s >= VOCAB).sum())
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tot += int(s.size)
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print(f"[DIAG] max_sign_id={mx} vocab={VOCAB} "
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f"超界sign占比={over}/{tot}={(over / max(tot, 1)):.2%}")
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def run_profile(config_override=None, n=20, batch_size=50, rebuild=False):
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"""用 torch.profiler 剖析前 n 个 batch，打印按 CUDA 耗时排序的算子表，定位真正瓶颈。"""
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if config_override is None:
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config_override = {}
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infer.CONFIG.update(config_override)
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cur = Path(__file__).parent
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ref = cur / "dataset"
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item_dict, user_seq = _get_data(cur, ref, rebuild=rebuild)
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test_logids = infer.load_logids_from_file(ref / "test.csv")
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ds = infer.CTRTestSeqDataset(
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test_logids_ordered=list(test_logids), item_dict=item_dict,
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user_seq=user_seq, max_feasign_per_slot={1: 2}, max_ctx_len=None)
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loader = DataLoader(ds, batch_size=batch_size, shuffle=False, num_workers=0,
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collate_fn=infer.make_collate_fn(ds.max_slot_id))
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batches = []
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for b in loader:
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batches.append(infer.move_batch_to_device(b, torch.device("cpu")))
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if len(batches) >= n:
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break
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del item_dict, user_seq, ds, loader
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import gc
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gc.collect()
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model, dev = infer.load_model(ckpt_path=None)
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cuda = (dev.type == "cuda")
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from torch.profiler import profile, ProfilerActivity
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acts = [ProfilerActivity.CPU] + ([ProfilerActivity.CUDA] if cuda else [])
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with torch.inference_mode():
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warm = infer.move_batch_to_device(batches[0], dev) # 预热（触发任何首次编译）
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model(warm)
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if cuda:
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torch.cuda.synchronize()
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with profile(activities=acts) as prof:
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for b in batches:
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b = infer.move_batch_to_device(b, dev)
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model(b)
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if cuda:
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torch.cuda.synchronize()
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sort_key = "cuda_time_total" if cuda else "cpu_time_total"
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print(prof.key_averages().table(sort_by=sort_key, row_limit=25))
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def run_once(config_override=None, batch_size=50, max_batches=None,
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max_feasign_per_slot=None, rebuild=False):
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"""跑一次本地推理并打分。返回 infer._cal_score 的结果 dict。"""
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if config_override is None:
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config_override = {}
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if max_feasign_per_slot is None:
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max_feasign_per_slot = {1: 2}
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infer.CONFIG.update(config_override)
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infer.CONFIG["sync_timing"] = True
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cur = Path(__file__).parent
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ref = cur / "dataset"
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test_csv = ref / "test.csv"
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label_file = ref / "label_data.txt"
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item_dict, user_seq = _get_data(cur, ref, rebuild=rebuild)
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test_logids = infer.load_logids_from_file(test_csv)
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ds = infer.CTRTestSeqDataset(
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test_logids_ordered=list(test_logids), item_dict=item_dict,
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user_seq=user_seq, max_feasign_per_slot=max_feasign_per_slot, max_ctx_len=None,
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)
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loader = DataLoader(
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ds, batch_size=batch_size, shuffle=False, num_workers=0,
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collate_fn=infer.make_collate_fn(ds.max_slot_id),
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)
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batches = []
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for b in loader:
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batches.append(infer.move_batch_to_device(b, torch.device("cpu")))
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if max_batches is not None and len(batches) >= max_batches:
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break
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del item_dict, user_seq, ds, loader
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import gc
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gc.collect()
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model, dev = infer.load_model(ckpt_path=None)
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logid2p = {}
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t_sum = 0.0
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cuda = (dev.type == "cuda")
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with torch.inference_mode():
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for b in batches:
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b = infer.move_batch_to_device(b, dev)
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pm = b["pred_mask"].bool()
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if cuda:
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torch.cuda.synchronize()
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t0 = time.time()
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logits, _ = model(b)
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probs = torch.sigmoid(logits.squeeze(-1))
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if cuda:
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torch.cuda.synchronize()
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t_sum += time.time() - t0
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for lid, p in zip(b["logid"][pm].cpu().tolist(), probs[pm].cpu().tolist()):
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logid2p[lid] = p
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order = [int(l.split(",")[0]) for l in open(test_csv) if l.strip()]
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missing = [lid for lid in order if lid not in logid2p]
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if missing:
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print(f"[BENCH][WARN] {len(missing)} 个测试 logid 没预测到（前几个 {missing[:5]}）")
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pred_path = cur / "predict.txt"
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with open(pred_path, "w") as f:
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for lid in order:
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f.write(f"{logid2p.get(lid, 0.0)}\n")
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res = infer._cal_score(pred_path, label_file, default_latency=t_sum)
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print(
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f"[BENCH] cfg={config_override} bs={batch_size}"
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f"{'' if max_batches is None else f' (first {max_batches} batches)'}"
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f" -> AUC={res['auc']:.5f} PCOC={res['pcoc']:.4f}"
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f" lat={res['latency']:.2f}s score={res['score_all']:.2f}"
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)
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return res
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def _parse_args():
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import argparse
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ap = argparse.ArgumentParser(description="CTI 推理测量闭环（子进程跑：!python bench.py ...）")
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ap.add_argument("--diag", action="store_true", help="只跑诊断，不推理")
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ap.add_argument("--smoke", type=int, default=None, help="只跑前 N 个 batch（冒烟）")
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ap.add_argument("--bs", type=int, default=50, help="batch_size（本地参考）")
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ap.add_argument("--fp32", action="store_true", help="FP32 天花板 = 关 fp16 + 关 expert 合并")
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ap.add_argument("--no-fp16", action="store_true", help="关闭半精度")
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ap.add_argument("--no-merge", action="store_true", help="关闭 expert 合并")
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ap.add_argument("--signid", choices=["clamp", "modulo"], default=None, help="sign-id 处理方式")
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ap.add_argument("--merge-th", type=float, default=None, help="expert 合并余弦阈值")
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ap.add_argument("--keep", type=str, default=None,
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help="逗号分隔的 keep_fp32_modules，如 linear,rep_encoder.input_norm")
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ap.add_argument("--feasign-none", action="store_true",
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help="不截断特征（max_feasign_per_slot=None）")
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ap.add_argument("--attn", choices=["sdpa", "chunked", "flex", "varlen"], default=None,
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help="注意力：sdpa=稠密, chunked=按用户分块SDPA, flex/varlen=对照")
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ap.add_argument("--chunk-users", type=int, default=None, help="chunked 模式每块用户数")
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ap.add_argument("--moe", choices=["dense", "loop"], default=None,
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help="MoE实现：dense=向量化(新), loop=逐expert循环(原)")
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ap.add_argument("--compile", action="store_true", help="开启 torch.compile")
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ap.add_argument("--emb-fp16", action="store_true", help="Embedding表转FP16(查表带宽减半,测AUC)")
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ap.add_argument("--dedup-emb", action="store_true", help="查表前对sign去重(减少大表随机访存)")
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ap.add_argument("--profile", type=int, default=None, metavar="N",
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help="剖析前 N 个 batch，打印按 CUDA 耗时排序的算子表（定位瓶颈）")
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ap.add_argument("--rebuild", action="store_true", help="强制重建过滤缓存")
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return ap.parse_args()
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if __name__ == "__main__":
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a = _parse_args()
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if a.diag:
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run_diag(rebuild=a.rebuild)
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sys.exit(0)
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cfg = {}
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if a.fp32:
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cfg["fp16"] = False
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cfg["expert_merge"] = False
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if a.no_fp16:
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cfg["fp16"] = False
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if a.no_merge:
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cfg["expert_merge"] = False
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if a.signid:
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cfg["signid_mode"] = a.signid
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if a.merge_th is not None:
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cfg["merge_threshold"] = a.merge_th
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if a.keep is not None:
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cfg["keep_fp32_modules"] = tuple(x for x in a.keep.split(",") if x)
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if a.attn is not None:
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cfg["attn"] = a.attn
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if a.chunk_users is not None:
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cfg["chunk_users"] = a.chunk_users
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if a.moe is not None:
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cfg["vectorize_moe"] = (a.moe == "dense")
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if a.emb_fp16:
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cfg["emb_fp16"] = True
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if a.dedup_emb:
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cfg["dedup_embedding"] = True
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if a.compile:
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cfg["compile"] = True
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if a.profile is not None:
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run_profile(cfg, n=a.profile, batch_size=a.bs, rebuild=a.rebuild)
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sys.exit(0)
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mf = None if a.feasign_none else {1: 2}
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run_once(cfg, batch_size=a.bs, max_batches=a.smoke, max_feasign_per_slot=mf, rebuild=a.rebuild)
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