Agent Conversation: gemini-3.1-pro-preview
Model: gemini-3.1-pro-preview
Total steps: 7
Messages: 18
UserStep 0
Task: llm-pretrain-embedding
LLM Pretraining: Embedding Strategy Optimization
Research Question
Design an improved embedding strategy for GPT-2 language model pretraining. Your modifications should reduce validation loss compared to standard token + position embeddings with weight tying.
What You Can Modify
The TokenEmbedding class (lines 116-140) in custom_pretrain.py:
- Token embedding representation (default: learned token + position embeddings)
- Weight tying strategy (default: input embedding = output lm_head weight)
- Additional embedding sources (e.g., n-gram embeddings, hash-based embeddings)
- Value embeddings that inject into transformer layers via
get_value_embed(layer_idx)
Interface: Your TokenEmbedding class must implement:
forward(idx) -> x: Takes token indices(B, T), returns embeddings(B, T, n_embd)get_lm_head_weight() -> weight: Returns the weight tensor for the output projectionget_num_pos_params() -> int: Returns count of position parameters (excluded from reported param count)get_value_embed(layer_idx) -> Optional[Tensor]: (Optional) Returns per-layer value embedding residual(B, T, n_embd)orNone
Evaluation
- Metric: Validation loss (cross-entropy, lower is better)
- Model sizes: GPT-2 124M (12L/12H/768D) and GPT-2 1.5B (48L/25H/1600D, 4-GPU DDP)
- Dataset: FineWeb 10B (GPT-2 tokenizer)
- Training: 5000 iterations, batch_size=12, block_size=1024, grad_accum=5
nanoGPT/custom_pretrain.py [EDITABLE — lines 115–140, lines 265–267 only]
1: """Custom GPT-2 Pretraining Script
2: Based on Andrej Karpathy's nanoGPT, evaluated on FineWeb dataset.
3: """
4:
5: import math
6: import inspect
7: import os
8: import time
9: from contextlib import nullcontext
10: from dataclasses import dataclass
11:
12: import numpy as np
13: import torch
14: import torch.nn as nn
15: from torch.nn import functional as F
16:
17: # ============================================================================
18: # Model Components
19: # ============================================================================
20:
21: # ── Normalization ──────────────────────────────────────────────────────────
22: class LayerNorm(nn.Module):
23: """LayerNorm but with an optional bias."""
24: def __init__(self, ndim, bias):
25: super().__init__()
26: self.weight = nn.Parameter(torch.ones(ndim))
27: self.bias = nn.Parameter(torch.zeros(ndim)) if bias else None
28:
29: def forward(self, input):
30: return F.layer_norm(input, self.weight.shape, self.weight, self.bias, 1e-5)
31:
32: # ── Self-Attention ─────────────────────────────────────────────────────────
33: class CausalSelfAttention(nn.Module):
34: def __init__(self, config):
35: super().__init__()
36: assert conAssistantStep 1edit
Tool Input
1{
2 "start_line": 115,
3 "content": "class TokenEmbedding(nn.Module):\n \"\"\"Token + position embedding with Multi-Scale N-gram Value Injection.\"\"\"\n def __init__(self, config):\n super().__init__()\n self.wte = nn.Embedding(config.vocab_size, config.n_embd)\n self.wpe = nn.Embedding(config.block_size, config.n_embd)\n self.drop = nn.Dropout(config.dropout)\n self.block_size = config.block_size\n self.n_embd = config.n_embd\n self.vocab_size = config.vocab_size\n self.n_layer = config.n_layer\n \n self.vte = nn.Embedding(config.vocab_size, config.n_embd)\n nn.init.normal_(self.vte.weight, mean=0.0, std=0.02)\n self.ln_vte = LayerNorm(config.n_embd, bias=config.bias)\n \n self.bigram_vocab = config.vocab_size * 2\n self.bigram = nn.Embedding(self.bigram_vocab, config.n_embd)\n nn.init.normal_(self.bigram.weight, mean=0.0, std=0.02)\n self.ln_bigram = LayerNorm(config.n_embd, bias=config.bias)\n \n self.trigram_vocab = config.vocab_size * 2\n self.trigram = nn.Embedding(self.trigram_vocab, config.n_embd)\n nn.init.normal_(self.trigram.weight, mean=0.0, std=0.02)\n self.ln_trigram = LayerNorm(config.n_embd, bias=config.bias)\n \n self.ve_gates = nn.Parameter(torch.zeros(config.n_layer, 3, config.n_embd))\n nn.init.normal_(self.ve_gates, mean=0.0, std=0.01)\n \n self._cached_vte = None\n self._cached_bigram = None\n self._cached_trigram = None\n\n def _hashes(self, idx):\n x = idx.to(torch.int32)\n b, t = x.size()\n r1, r2, r3 = 36313, 27191, 15473\n \n bigram_idx = torch.zeros_like(x)\n bigram_idx[:, 0] = self.bigram_vocab - 1\n if t > 1:\n bigram_idx[:, 1:] = torch.abs((x[:, 1:] * r1) ^ (x[:, :-1] * r2)) % self.bigram_vocab\n \n trigram_idx = torch.zeros_like(x)\n trigram_idx[:, 0] = self.trigram_vocab - 1\n if t > 1:\n trigram_idx[:, 1] = self.trigram_vocab - 1\n if t > 2:\n trigram_idx[:, 2:] = torch.abs((x[:, 2:] * r1) ^ (x[:, 1:-1] * r2) ^ (x[:, :-2] * r3)) % self.trigram_vocab\n \n return bigram_idx, trigram_idx\n\n def forward(self, idx):\n b, t = idx.size()\n tok_emb = self.wte(idx)\n pos = torch.arange(0, t, dtype=torch.long, device=idx.device)\n pos_emb = self.wpe(pos)\n \n self._cached_vte = self.ln_vte(self.vte(idx))\n b_idx, t_idx = self._hashes(idx)\n self._cached_bigram = self.ln_bigram(self.bigram(b_idx))\n self._cached_trigram = self.ln_trigram(self.trigram(t_idx))\n \n return self.drop(tok_emb + pos_emb)\n\n def get_lm_head_weight(self):\n \"\"\"Return weight for the language model head (tied by default).\"\"\"\n return self.wte.weight\n\n def get_num_pos_params(self):\n \"\"\"Return number of position embedding parameters (excluded from param count).\"\"\"\n return self.wpe.weight.numel()",
4 "filename": "custom_pretrain.py",
5 "op": "replace",
6 "end_line": 140
7}Tool ResultStep 1
ERROR: Package 'custom_pretrain.py' is not in allowed packages
AssistantStep 2edit
Tool Input
1{
2 "filename": "nanoGPT/custom_pretrain.py",
3 "content": "class TokenEmbedding(nn.Module):\n \"\"\"Token + position embedding with Multi-Scale N-gram Value Injection.\"\"\"\n def __init__(self, config):\n super().__init__()\n self.wte = nn.Embedding(config.vocab_size, config.n_embd)\n self.wpe = nn.Embedding(config.block_size, config.n_embd)\n self.drop = nn.Dropout(config.dropout)\n self.block_size = config.block_size\n self.n_embd = config.n_embd\n self.vocab_size = config.vocab_size\n self.n_layer = config.n_layer\n \n self.vte = nn.Embedding(config.vocab_size, config.n_embd)\n nn.init.normal_(self.vte.weight, mean=0.0, std=0.02)\n self.ln_vte = LayerNorm(config.n_embd, bias=config.bias)\n \n self.bigram_vocab = config.vocab_size * 2\n self.bigram = nn.Embedding(self.bigram_vocab, config.n_embd)\n nn.init.normal_(self.bigram.weight, mean=0.0, std=0.02)\n self.ln_bigram = LayerNorm(config.n_embd, bias=config.bias)\n \n self.trigram_vocab = config.vocab_size * 2\n self.trigram = nn.Embedding(self.trigram_vocab, config.n_embd)\n nn.init.normal_(self.trigram.weight, mean=0.0, std=0.02)\n self.ln_trigram = LayerNorm(config.n_embd, bias=config.bias)\n \n self.ve_gates = nn.Parameter(torch.zeros(config.n_layer, 3, config.n_embd))\n nn.init.normal_(self.ve_gates, mean=0.0, std=0.01)\n \n self._cached_vte = None\n self._cached_bigram = None\n self._cached_trigram = None\n\n def _hashes(self, idx):\n x = idx.to(torch.int32)\n b, t = x.size()\n r1, r2, r3 = 36313, 27191, 15473\n \n bigram_idx = torch.zeros_like(x)\n bigram_idx[:, 0] = self.bigram_vocab - 1\n if t > 1:\n bigram_idx[:, 1:] = torch.abs((x[:, 1:] * r1) ^ (x[:, :-1] * r2)) % self.bigram_vocab\n \n trigram_idx = torch.zeros_like(x)\n trigram_idx[:, 0] = self.trigram_vocab - 1\n if t > 1:\n trigram_idx[:, 1] = self.trigram_vocab - 1\n if t > 2:\n trigram_idx[:, 2:] = torch.abs((x[:, 2:] * r1) ^ (x[:, 1:-1] * r2) ^ (x[:, :-2] * r3)) % self.trigram_vocab\n \n return bigram_idx, trigram_idx\n\n def forward(self, idx):\n b, t = idx.size()\n tok_emb = self.wte(idx)\n pos = torch.arange(0, t, dtype=torch.long, device=idx.device)\n pos_emb = self.wpe(pos)\n \n self._cached_vte = self.ln_vte(self.vte(idx))\n b_idx, t_idx = self._hashes(idx)\n self._cached_bigram = self.ln_bigram(self.bigram(b_idx))\n self._cached_trigram = self.ln_trigram(self.trigram(t_idx))\n \n return self.drop(tok_emb + pos_emb)\n\n def get_lm_head_weight(self):\n \"\"\"Return weight for the language model head (tied by default).\"\"\"\n return self.wte.weight\n\n def get_num_pos_params(self):\n \"\"\"Return number of position embedding parameters (excluded from param count).\"\"\"\n return self.wpe.weight.numel()\n\n def get_value_embed(self, layer_idx):\n if self._cached_vte is None:\n return None\n g_v = self.ve_gates[layer_idx, 0]\n g_b = self.ve_gates[layer_idx, 1]\n g_t = self.ve_gates[layer_idx, 2]\n return (self._cached_vte * g_v) + (self._cached_bigram * g_b) + (self._cached_trigram * g_t)",
4 "start_line": 115,
5 "end_line": 140,
6 "op": "replace"
7}Tool ResultStep 2
OK: Replaced lines 115..140 with 80 line(s) in nanoGPT/custom_pretrain.py. Editable range: 115–194, 319–321. [Current file: nanoGPT/custom_pretrain.py | editable: 115–194 | total: 527 lines] 112| bias: bool = False 113| 114| # ── Embedding Strategy ──────────────────────────────────────────────────── 115 class TokenEmbedding(nn.Module): 116 """Token + position embedding with Multi-Scale N-gram Value Injection.""" 117 def __init__(self, config): 118 super().__init__() 119 self.wte = nn.Embedding(config.vocab_size, config.n_embd) 120 self.wpe = nn.Embedding(config.block_size, config.n_embd) 121 self.drop = nn.Dropout(config.dropout) 122 self.block_size = config.block_size 123 self.n_embd = config.n_embd 124 self.vocab_size = config.vocab_size 125 self.n_layer = config.n_layer 126 127 self.vte = nn.Embedding(config.vocab_size, config.n
AssistantStep 3test
Tool ResultStep 3
[Test #1] (2 tests remaining; call submit(n=1) to submit this result)
### gpt-345m (scripts/gpt_345m.sh)
Training metrics (last steps):
TRAIN_METRICS: step=8000, train_loss=2.5881, val_loss=2.3239
TRAIN_METRICS: step=9000, train_loss=2.5474, val_loss=2.3050
TRAIN_METRICS: step=10000, train_loss=2.5260, val_loss=2.2809
TRAIN_METRICS: step=11000, train_loss=2.5159, val_loss=2.2672
TRAIN_METRICS: step=12000, train_loss=2.5150, val_loss=2.2590
Final metrics (gpt-345m): val_loss_gpt-345m=2.2549, wikitext2_ppl_gpt-345m=43.1300, lambada_ppl_gpt-345m=66.0200
### lm-eval-345m (scripts/lm_eval_345m.sh)
Final metrics (lm-eval-345m): arc_easy_lm-eval-345m=56.6900, hellaswag_lm-eval-345m=34.0700, piqa_lm-eval-345m=64.1500, winogrande_lm-eval-345m=50.9900
[Leaderboard] Results saved: {'val_loss_gpt-345m': 2.2549, 'wikitext2_ppl_gpt-345m': 43.13, 'lambada_ppl_gpt-345m': 66.02, 'elapsed_gpt-345m': 21919, 'arc_easy_lm-eval-345m': 56.69, 'hellaswag_lm-eval-345m': 34.07, 'piqa_lm-eval-345m': 64.15, 'w
AssistantStep 4edit
Tool Input
1{
2 "op": "replace",
3 "filename": "nanoGPT/custom_pretrain.py",
4 "end_line": 194,
5 "content": "class TokenEmbedding(nn.Module):\n \"\"\"Token + position embedding with Multi-Scale N-gram & Positional Value Injection.\"\"\"\n def __init__(self, config):\n super().__init__()\n self.wte = nn.Embedding(config.vocab_size, config.n_embd)\n self.wpe = nn.Embedding(config.block_size, config.n_embd)\n self.drop = nn.Dropout(config.dropout)\n self.block_size = config.block_size\n self.n_embd = config.n_embd\n self.vocab_size = config.vocab_size\n self.n_layer = config.n_layer\n \n self.vte = nn.Embedding(config.vocab_size, config.n_embd)\n nn.init.normal_(self.vte.weight, mean=0.0, std=0.02)\n self.ln_vte = LayerNorm(config.n_embd, bias=config.bias)\n \n self.bigram_vocab = config.vocab_size * 2\n self.bigram = nn.Embedding(self.bigram_vocab, config.n_embd)\n nn.init.normal_(self.bigram.weight, mean=0.0, std=0.02)\n self.ln_bigram = LayerNorm(config.n_embd, bias=config.bias)\n \n self.trigram_vocab = config.vocab_size * 2\n self.trigram = nn.Embedding(self.trigram_vocab, config.n_embd)\n nn.init.normal_(self.trigram.weight, mean=0.0, std=0.02)\n self.ln_trigram = LayerNorm(config.n_embd, bias=config.bias)\n \n # Gates for 4 components: vte, bigram, trigram, pos_emb\n self.ve_gates = nn.Parameter(torch.zeros(config.n_layer, 4, config.n_embd))\n nn.init.normal_(self.ve_gates, mean=0.02, std=0.02)\n \n self._cached_vte = None\n self._cached_bigram = None\n self._cached_trigram = None\n self._cached_pos_emb = None\n\n def _hashes(self, idx):\n x = idx.to(torch.int32)\n b, t = x.size()\n r1, r2, r3 = 36313, 27191, 15473\n \n bigram_idx = torch.zeros_like(x)\n bigram_idx[:, 0] = self.bigram_vocab - 1\n if t > 1:\n bigram_idx[:, 1:] = torch.abs((x[:, 1:] * r1) ^ (x[:, :-1] * r2)) % self.bigram_vocab\n \n trigram_idx = torch.zeros_like(x)\n trigram_idx[:, 0] = self.trigram_vocab - 1\n if t > 1:\n trigram_idx[:, 1] = self.trigram_vocab - 1\n if t > 2:\n trigram_idx[:, 2:] = torch.abs((x[:, 2:] * r1) ^ (x[:, 1:-1] * r2) ^ (x[:, :-2] * r3)) % self.trigram_vocab\n \n return bigram_idx, trigram_idx\n\n def forward(self, idx):\n b, t = idx.size()\n tok_emb = self.wte(idx)\n pos = torch.arange(0, t, dtype=torch.long, device=idx.device)\n self._cached_pos_emb = self.wpe(pos)\n pos_emb = self._cached_pos_emb\n \n self._cached_vte = self.ln_vte(self.vte(idx))\n b_idx, t_idx = self._hashes(idx)\n self._cached_bigram = self.ln_bigram(self.bigram(b_idx))\n self._cached_trigram = self.ln_trigram(self.trigram(t_idx))\n \n return self.drop(tok_emb + pos_emb)\n\n def get_lm_head_weight(self):\n \"\"\"Return weight for the language model head (tied by default).\"\"\"\n return self.wte.weight\n\n def get_num_pos_params(self):\n \"\"\"Return number of position embedding parameters (excluded from param count).\"\"\"\n return self.wpe.weight.numel()\n\n def get_value_embed(self, layer_idx):\n if self._cached_vte is None:\n return None\n g_v = self.ve_gates[layer_idx, 0]\n g_b = self.ve_gates[layer_idx, 1]\n g_t = self.ve_gates[layer_idx, 2]\n g_p = self.ve_gates[layer_idx, 3]\n \n inj = (self._cached_vte * g_v) + (self._cached_bigram * g_b) + \\\n (self._cached_trigram * g_t) + (self._cached_pos_emb * g_p)\n return inj",
6 "start_line": 115
7}Tool ResultStep 4
OK: Replaced lines 115..194 with 87 line(s) in nanoGPT/custom_pretrain.py. Editable range: 115–201, 326–328. [Current file: nanoGPT/custom_pretrain.py | editable: 115–201 | total: 534 lines] 112| bias: bool = False 113| 114| # ── Embedding Strategy ──────────────────────────────────────────────────── 115 class TokenEmbedding(nn.Module): 116 """Token + position embedding with Multi-Scale N-gram & Positional Value Injection.""" 117 def __init__(self, config): 118 super().__init__() 119 self.wte = nn.Embedding(config.vocab_size, config.n_embd) 120 self.wpe = nn.Embedding(config.block_size, config.n_embd) 121 self.drop = nn.Dropout(config.dropout) 122 self.block_size = config.block_size 123 self.n_embd = config.n_embd 124 self.vocab_size = config.vocab_size 125 self.n_layer = config.n_layer 126 127 self.vte = nn.Embedding(config.vocab_s
AssistantStep 5test
AssistantStep 5test
AssistantStep 5test
Tool ResultStep 5
[Test #2] (1 test remaining; call submit(n=N) to choose which test result to submit as final)
### gpt-345m (scripts/gpt_345m.sh)
Training metrics (last steps):
TRAIN_METRICS: step=8000, train_loss=2.5890, val_loss=2.3305
TRAIN_METRICS: step=9000, train_loss=2.5602, val_loss=2.3004
TRAIN_METRICS: step=10000, train_loss=2.5348, val_loss=2.2872
TRAIN_METRICS: step=11000, train_loss=2.5144, val_loss=2.2699
TRAIN_METRICS: step=12000, train_loss=2.5131, val_loss=2.2604
Final metrics (gpt-345m): val_loss_gpt-345m=2.2649, wikitext2_ppl_gpt-345m=43.5400, lambada_ppl_gpt-345m=70.1300
### lm-eval-345m (scripts/lm_eval_345m.sh)
ERROR: Checkpoint not found: /scratch/gpfs/CHIJ/bohan/MLS-Bench/.saves/llm-pretrain-embedding/gemini-3.1-pro-preview_20260408_123016/seed_42/ckpt_gpt-345m.pt
[Leaderboard] Results saved: {'val_loss_gpt-345m': 2.2649, 'wikitext2_ppl_gpt-345m': 43.54, 'lambada_ppl_gpt-345m': 70.13, 'elapsed_gpt-345m': 21912, 'elapsed_lm-eval-345m': 1}AssistantStep 6edit
Tool Input
1{
2 "filename": "nanoGPT/custom_pretrain.py",
3 "op": "replace",
4 "content": "class TokenEmbedding(nn.Module):\n \"\"\"Token + position embedding with Multi-Scale N-gram Value Injection.\"\"\"\n def __init__(self, config):\n super().__init__()\n self.wte = nn.Embedding(config.vocab_size, config.n_embd)\n self.wpe = nn.Embedding(config.block_size, config.n_embd)\n self.drop = nn.Dropout(config.dropout)\n self.block_size = config.block_size\n self.n_embd = config.n_embd\n self.vocab_size = config.vocab_size\n self.n_layer = config.n_layer\n \n self.vte = nn.Embedding(config.vocab_size, config.n_embd)\n nn.init.normal_(self.vte.weight, mean=0.0, std=0.02)\n self.ln_vte = LayerNorm(config.n_embd, bias=config.bias)\n \n self.bigram_vocab = config.vocab_size * 2\n self.bigram = nn.Embedding(self.bigram_vocab, config.n_embd)\n nn.init.normal_(self.bigram.weight, mean=0.0, std=0.02)\n self.ln_bigram = LayerNorm(config.n_embd, bias=config.bias)\n \n self.trigram_vocab = config.vocab_size * 2\n self.trigram = nn.Embedding(self.trigram_vocab, config.n_embd)\n nn.init.normal_(self.trigram.weight, mean=0.0, std=0.02)\n self.ln_trigram = LayerNorm(config.n_embd, bias=config.bias)\n \n self.ve_gates = nn.Parameter(torch.zeros(config.n_layer, 3, config.n_embd))\n nn.init.normal_(self.ve_gates, mean=0.0, std=0.01)\n \n self._cached_vte = None\n self._cached_bigram = None\n self._cached_trigram = None\n\n def _hashes(self, idx):\n x = idx.to(torch.int32)\n b, t = x.size()\n r1, r2, r3 = 36313, 27191, 15473\n \n bigram_idx = torch.zeros_like(x)\n bigram_idx[:, 0] = self.bigram_vocab - 1\n if t > 1:\n bigram_idx[:, 1:] = torch.abs((x[:, 1:] * r1) ^ (x[:, :-1] * r2)) % self.bigram_vocab\n \n trigram_idx = torch.zeros_like(x)\n trigram_idx[:, 0] = self.trigram_vocab - 1\n if t > 1:\n trigram_idx[:, 1] = self.trigram_vocab - 1\n if t > 2:\n trigram_idx[:, 2:] = torch.abs((x[:, 2:] * r1) ^ (x[:, 1:-1] * r2) ^ (x[:, :-2] * r3)) % self.trigram_vocab\n \n return bigram_idx, trigram_idx\n\n def forward(self, idx):\n b, t = idx.size()\n tok_emb = self.wte(idx)\n pos = torch.arange(0, t, dtype=torch.long, device=idx.device)\n pos_emb = self.wpe(pos)\n \n self._cached_vte = self.ln_vte(self.vte(idx))\n b_idx, t_idx = self._hashes(idx)\n self._cached_bigram = self.ln_bigram(self.bigram(b_idx))\n self._cached_trigram = self.ln_trigram(self.trigram(t_idx))\n \n return self.drop(tok_emb + pos_emb)\n\n def get_lm_head_weight(self):\n \"\"\"Return weight for the language model head (tied by default).\"\"\"\n return self.wte.weight\n\n def get_num_pos_params(self):\n \"\"\"Return number of position embedding parameters (excluded from param count).\"\"\"\n return self.wpe.weight.numel()\n\n def get_value_embed(self, layer_idx):\n if self._cached_vte is None:\n return None\n g_v = self.ve_gates[layer_idx, 0]\n g_b = self.ve_gates[layer_idx, 1]\n g_t = self.ve_gates[layer_idx, 2]\n return (self._cached_vte * g_v) + (self._cached_bigram * g_b) + (self._cached_trigram * g_t)",
5 "start_line": 115,
6 "end_line": 201
7}Tool ResultStep 6
OK: Replaced lines 115..201 with 80 line(s) in nanoGPT/custom_pretrain.py. Editable range: 115–194. [Current file: nanoGPT/custom_pretrain.py | editable: 115–194 | total: 527 lines] 112| bias: bool = False 113| 114| # ── Embedding Strategy ──────────────────────────────────────────────────── 115 class TokenEmbedding(nn.Module): 116 """Token + position embedding with Multi-Scale N-gram Value Injection.""" 117 def __init__(self, config): 118 super().__init__() 119 self.wte = nn.Embedding(config.vocab_size, config.n_embd) 120 self.wpe = nn.Embedding(config.block_size, config.n_embd) 121 self.drop = nn.Dropout(config.dropout) 122 self.block_size = config.block_size 123 self.n_embd = config.n_embd 124 self.vocab_size = config.vocab_size 125 self.n_layer = config.n_layer 126 127 self.vte = nn.Embedding(config.vocab_size, config.n_embd)
AssistantStep 7submit
Tool Input
1{
2 "n": 1
3}Tool ResultStep 7
[submit] Submitting result from test #1 as final.
### gpt-345m (scripts/gpt_345m.sh)
Training metrics (last steps):
TRAIN_METRICS: step=8000, train_loss=2.5881, val_loss=2.3239
TRAIN_METRICS: step=9000, train_loss=2.5474, val_loss=2.3050
TRAIN_METRICS: step=10000, train_loss=2.5260, val_loss=2.2809
TRAIN_METRICS: step=11000, train_loss=2.5159, val_loss=2.2672
TRAIN_METRICS: step=12000, train_loss=2.5150, val_loss=2.2590
Final metrics (gpt-345m): val_loss_gpt-345m=2.2549, wikitext2_ppl_gpt-345m=43.1300, lambada_ppl_gpt-345m=66.0200
### lm-eval-345m (scripts/lm_eval_345m.sh)
Final metrics (lm-eval-345m): arc_easy_lm-eval-345m=56.6900, hellaswag_lm-eval-345m=34.0700, piqa_lm-eval-345m=64.1500, winogrande_lm-eval-345m=50.9900
[submit] Finalized test #1 as final.
[Leaderboard] Results saved: {'val_loss_gpt-345m': 2.2549, 'wikitext2_ppl_gpt-345m': 43.13, 'lambada_ppl_gpt-345m': 66.02, 'elapsed_gpt-345m': 21919, 'arc_easy_lm-eval-345m': 56.69, 'hellaswag_lm-eval-345m': 34.07, 'piqa_lm-eva