feat: add pretrain evaluation scripts

eval_llm.py

@@ -1,41 +1,51 @@
 import time
 import argparse
+import os
 import random
 import warnings
 import torch
 from transformers import AutoTokenizer, AutoModelForCausalLM, TextStreamer
-from model.model_minimind import MiniMindConfig, MiniMindForCausalLM
+from model.model_minimind import MiniMindForCausalLM
-from model.model_minimind_mla import MiniMindMLAConfig, MiniMindMLAForCausalLM
+from model.model_minimind_mla import MiniMindMLAForCausalLM
 from model.model_lora import *
-from trainer.trainer_utils import setup_seed, get_model_params
+from trainer.trainer_utils import (
+    add_model_profile_args,
+    apply_model_profile,
+    build_lm_config,
+    get_model_params,
+    get_model_suffix,
+    resolve_attention_type,
+    setup_seed,
+)
 warnings.filterwarnings('ignore')
 
 def init_model(args):
     tokenizer = AutoTokenizer.from_pretrained(args.load_from)
     if 'model' in args.load_from:
-        if args.use_mla:
+        attention_type = resolve_attention_type(args)
-            config = MiniMindMLAConfig(
+        config = build_lm_config(
             hidden_size=args.hidden_size,
             num_hidden_layers=args.num_hidden_layers,
             use_moe=bool(args.use_moe),
+            attention_type=attention_type,
+            num_attention_heads=args.num_attention_heads,
+            num_key_value_heads=args.num_key_value_heads,
+            intermediate_size=args.intermediate_size,
+            kv_lora_rank=args.kv_lora_rank,
+            q_lora_rank=args.q_lora_rank,
+            rope_dim=args.rope_dim,
             inference_rope_scaling=args.inference_rope_scaling,
-                kv_lora_rank=args.kv_lora_rank
         )
+        if attention_type == "mla":
             model = MiniMindMLAForCausalLM(config)
         else:
-            model = MiniMindForCausalLM(MiniMindConfig(
+            model = MiniMindForCausalLM(config)
-                hidden_size=args.hidden_size,
+        model_suffix = get_model_suffix(config)
-                num_hidden_layers=args.num_hidden_layers,
+        ckp = os.path.join(args.save_dir, f'{args.weight}_{args.hidden_size}{model_suffix}.pth')
-                use_moe=bool(args.use_moe),
-                inference_rope_scaling=args.inference_rope_scaling
-            ))
-        model_suffix = '_moe' if args.use_moe else ''
-        if args.use_mla: model_suffix += '_mla'
-        ckp = f'./{args.save_dir}/{args.weight}_{args.hidden_size}{model_suffix}.pth'
         model.load_state_dict(torch.load(ckp, map_location=args.device), strict=True)
         if args.lora_weight != 'None':
             apply_lora(model)
-            load_lora(model, f'./{args.save_dir}/{args.lora_weight}_{args.hidden_size}.pth')
+            load_lora(model, os.path.join(args.save_dir, f'{args.lora_weight}_{args.hidden_size}.pth'))
     else:
         model = AutoModelForCausalLM.from_pretrained(args.load_from, trust_remote_code=True)
     get_model_params(model, model.config)
@@ -49,9 +59,15 @@ def main():
     parser.add_argument('--lora_weight', default='None', type=str, help="LoRA权重名称（None表示不使用，可选：lora_identity, lora_medical）")
     parser.add_argument('--hidden_size', default=768, type=int, help="隐藏层维度")
     parser.add_argument('--num_hidden_layers', default=8, type=int, help="隐藏层数量")
+    parser.add_argument('--num_attention_heads', default=8, type=int, help="注意力头数量")
+    parser.add_argument('--num_key_value_heads', default=4, type=int, help="KV头数量")
+    parser.add_argument('--intermediate_size', default=None, type=int, help="FFN中间层维度")
     parser.add_argument('--use_moe', default=0, type=int, choices=[0, 1], help="是否使用MoE架构（0=否，1=是）")
+    parser.add_argument('--attention_type', default='gqa', type=str, choices=['gqa', 'mha', 'mqa', 'mla'], help="注意力结构")
     parser.add_argument('--use_mla', default=0, type=int, choices=[0, 1], help="是否使用MLA注意力架构（0=否，1=是）")
     parser.add_argument('--kv_lora_rank', default=128, type=int, help="MLA的KV压缩秩（仅use_mla=1时生效）")
+    parser.add_argument('--q_lora_rank', default=256, type=int, help="MLA的Q压缩秩（仅use_mla=1时生效）")
+    parser.add_argument('--rope_dim', default=None, type=int, help="MLA解耦RoPE维度")
     parser.add_argument('--inference_rope_scaling', default=False, action='store_true', help="启用RoPE位置编码外推（4倍，仅解决位置编码问题）")
     parser.add_argument('--max_new_tokens', default=8192, type=int, help="最大生成长度（注意：并非模型实际长文本能力）")
     parser.add_argument('--temperature', default=0.85, type=float, help="生成温度，控制随机性（0-1，越大越随机）")
@@ -60,7 +76,9 @@ def main():
     parser.add_argument('--historys', default=0, type=int, help="携带历史对话轮数（需为偶数，0表示不携带历史）")
     parser.add_argument('--show_speed', default=1, type=int, help="显示decode速度（tokens/s）")
     parser.add_argument('--device', default='cuda' if torch.cuda.is_available() else 'cpu', type=str, help="运行设备")
+    add_model_profile_args(parser)
     args = parser.parse_args()
+    apply_model_profile(args)
     
     prompts = [
         '你有什么特长？',

scripts/eval_pretrain_ppl.py

@@ -0,0 +1,177 @@
+import argparse
+import json
+import math
+import os
+import sys
+import time
+
+import torch
+from torch.utils.data import DataLoader, Dataset
+from transformers import AutoTokenizer
+
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
+
+from trainer.trainer_utils import (  # noqa: E402
+    add_model_profile_args,
+    apply_model_profile,
+    build_lm_config,
+    init_model,
+    resolve_attention_type,
+)
+
+
+class JsonlPretrainEvalDataset(Dataset):
+    def __init__(self, data_path, tokenizer, max_length=1024, max_samples=2000, start_index=0):
+        self.samples = []
+        self.tokenizer = tokenizer
+        self.max_length = max_length
+        max_samples = int(max_samples)
+        start_index = int(start_index)
+
+        with open(data_path, "r", encoding="utf-8") as f:
+            for line_idx, line in enumerate(f):
+                if line_idx < start_index:
+                    continue
+                if max_samples > 0 and len(self.samples) >= max_samples:
+                    break
+                line = line.strip()
+                if not line:
+                    continue
+                item = json.loads(line)
+                text = str(item.get("text", ""))
+                if text:
+                    self.samples.append(text)
+
+        if not self.samples:
+            raise ValueError(f"No eval samples loaded from {data_path}")
+
+    def __len__(self):
+        return len(self.samples)
+
+    def __getitem__(self, index):
+        tokens = self.tokenizer(
+            self.samples[index],
+            add_special_tokens=False,
+            max_length=self.max_length - 2,
+            truncation=True,
+        ).input_ids
+        tokens = [self.tokenizer.bos_token_id] + tokens + [self.tokenizer.eos_token_id]
+        input_ids = tokens + [self.tokenizer.pad_token_id] * (self.max_length - len(tokens))
+        input_ids = torch.tensor(input_ids, dtype=torch.long)
+        labels = input_ids.clone()
+        labels[input_ids == self.tokenizer.pad_token_id] = -100
+        return input_ids, labels
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(description="Evaluate pretrain checkpoint loss/PPL on JSONL text samples")
+    parser.add_argument("--data_path", required=True, help="JSONL file with a text field")
+    parser.add_argument("--save_dir", default="out", help="Directory containing native .pth weights")
+    parser.add_argument("--weight", required=True, help="Weight prefix, e.g. pretrain_searchlm_300m_v1")
+    parser.add_argument("--tokenizer_path", default="model")
+    parser.add_argument("--output", default="", help="Optional JSON output path")
+    parser.add_argument("--max_samples", type=int, default=2000, help="Number of eval samples; <=0 means all after start_index")
+    parser.add_argument("--start_index", type=int, default=0, help="Skip this many JSONL rows before evaluation")
+    parser.add_argument("--batch_size", type=int, default=4)
+    parser.add_argument("--max_seq_len", type=int, default=1024)
+    parser.add_argument("--dtype", default="float16", choices=["float16", "bfloat16", "float32"])
+    parser.add_argument("--device", default="cuda" if torch.cuda.is_available() else "cpu")
+    parser.add_argument("--log_interval", type=int, default=20)
+    parser.add_argument("--hidden_size", default=768, type=int)
+    parser.add_argument("--num_hidden_layers", default=8, type=int)
+    parser.add_argument("--num_attention_heads", default=8, type=int)
+    parser.add_argument("--num_key_value_heads", default=4, type=int)
+    parser.add_argument("--intermediate_size", default=None, type=int)
+    parser.add_argument("--use_moe", default=0, type=int, choices=[0, 1])
+    parser.add_argument("--attention_type", default="gqa", choices=["gqa", "mha", "mqa", "mla"])
+    parser.add_argument("--use_mla", default=0, type=int, choices=[0, 1])
+    parser.add_argument("--kv_lora_rank", default=128, type=int)
+    parser.add_argument("--q_lora_rank", default=256, type=int)
+    parser.add_argument("--rope_dim", default=None, type=int)
+    add_model_profile_args(parser)
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+    apply_model_profile(args)
+    attention_type = resolve_attention_type(args)
+    lm_config = build_lm_config(
+        hidden_size=args.hidden_size,
+        num_hidden_layers=args.num_hidden_layers,
+        use_moe=bool(args.use_moe),
+        attention_type=attention_type,
+        num_attention_heads=args.num_attention_heads,
+        num_key_value_heads=args.num_key_value_heads,
+        intermediate_size=args.intermediate_size,
+        kv_lora_rank=args.kv_lora_rank,
+        q_lora_rank=args.q_lora_rank,
+        rope_dim=args.rope_dim,
+    )
+
+    model, tokenizer = init_model(
+        lm_config,
+        from_weight=args.weight,
+        tokenizer_path=args.tokenizer_path,
+        save_dir=args.save_dir,
+        device=args.device,
+    )
+    if args.device.startswith("cuda") and args.dtype != "float32":
+        dtype = torch.float16 if args.dtype == "float16" else torch.bfloat16
+        model = model.to(dtype=dtype)
+    model.eval()
+
+    dataset = JsonlPretrainEvalDataset(
+        args.data_path,
+        tokenizer,
+        max_length=args.max_seq_len,
+        max_samples=args.max_samples,
+        start_index=args.start_index,
+    )
+    loader = DataLoader(dataset, batch_size=args.batch_size, shuffle=False)
+
+    total_nll = 0.0
+    total_tokens = 0
+    start_time = time.time()
+    with torch.inference_mode():
+        for step, (input_ids, labels) in enumerate(loader, start=1):
+            input_ids = input_ids.to(args.device, non_blocking=True)
+            labels = labels.to(args.device, non_blocking=True)
+            outputs = model(input_ids, labels=labels)
+            valid_tokens = (labels[..., 1:] != -100).sum().item()
+            total_nll += float(outputs.loss.item()) * valid_tokens
+            total_tokens += valid_tokens
+
+            if step % args.log_interval == 0 or step == len(loader):
+                loss = total_nll / max(total_tokens, 1)
+                ppl = math.exp(loss) if loss < 100 else float("inf")
+                print(
+                    f"Eval step [{step}/{len(loader)}], "
+                    f"loss: {loss:.4f}, ppl: {ppl:.2f}, tokens: {total_tokens}"
+                )
+
+    loss = total_nll / max(total_tokens, 1)
+    ppl = math.exp(loss) if loss < 100 else float("inf")
+    result = {
+        "weight": args.weight,
+        "model_profile": args.model_profile,
+        "data_path": args.data_path,
+        "start_index": args.start_index,
+        "num_samples": len(dataset),
+        "max_seq_len": args.max_seq_len,
+        "batch_size": args.batch_size,
+        "loss": loss,
+        "ppl": ppl,
+        "tokens": total_tokens,
+        "elapsed_sec": time.time() - start_time,
+    }
+    print(json.dumps(result, ensure_ascii=False, indent=2))
+
+    if args.output:
+        os.makedirs(os.path.dirname(os.path.abspath(args.output)), exist_ok=True)
+        with open(args.output, "w", encoding="utf-8") as f:
+            json.dump(result, f, ensure_ascii=False, indent=2)
+
+
+if __name__ == "__main__":
+    main()

trainer/trainer_utils.py

@@ -214,6 +214,7 @@ def _candidate_deepspeed_tags(lm_config, weight, save_dir="../checkpoints"):
         for name in os.listdir(save_dir):
             path = os.path.join(save_dir, name)
             if name.startswith(prefix) and os.path.isdir(path):
+                #获取文件夹最后修改时间的函数
                 step_tags.append((os.path.getmtime(path), name))
         candidates.extend(name for _, name in sorted(step_tags, reverse=True))
     dedup = []
@@ -308,6 +309,7 @@ def load_deepspeed_checkpoint(model_engine, lm_config, weight, save_dir="../chec
     loaded_tag = None
     for tag in _candidate_deepspeed_tags(lm_config, weight, save_dir):
         try:
+            #deepspeed会从save_dir中找tag对应的checkpoint
             load_path, client_state = model_engine.load_checkpoint(save_dir, tag=tag)
         except Exception as exc:
             errors.append(f"{tag}: {exc}")
@@ -317,6 +319,7 @@ def load_deepspeed_checkpoint(model_engine, lm_config, weight, save_dir="../chec
             continue
         loaded_tag = tag
         break
+    #这个的else的for else 意思是如果for循环没有被break打断就走else分支
     else:
         if is_main_process():
             Logger("DeepSpeed checkpoint not loaded" + (f": {'; '.join(errors)}" if errors else ""))