Q-TensorFormer / benchmark_fast.py
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"""Fast benchmark: Q-TensorFormer vs Baseline on real data (no quantum for speed)."""
import sys, time, math, json, os
import torch
from torch.utils.data import DataLoader, Dataset
from datasets import load_dataset
from collections import Counter
sys.path.insert(0, '/app')
from qtensorformer import QTensorFormer, ModelConfig, count_params
from qtensorformer.qtensorformer import create_baseline_transformer
class WikiTextDataset(Dataset):
def __init__(self, split='train', seq_len=32, max_samples=1000):
raw = load_dataset('wikitext', 'wikitext-2-raw-v1', split=split, trust_remote_code=True)
text = ' '.join([t for t in raw['text'] if t.strip()])
words = text.split()
counts = Counter(words)
vocab = ['<pad>', '<unk>'] + [w for w,_ in counts.most_common(5000)]
self.stoi = {w:i for i,w in enumerate(vocab)}
tokens = [self.stoi.get(w, 1) for w in words]
self.data = []
for i in range(min(max_samples, len(tokens)//seq_len - 1)):
s = i * (seq_len + 1)
self.data.append((tokens[s:s+seq_len], tokens[s+1:s+seq_len+1]))
self.vocab_size = len(vocab)
print(f" {split}: {len(self.data)} seqs, vocab={self.vocab_size}")
def __len__(self): return len(self.data)
def __getitem__(self, i):
return torch.tensor(self.data[i][0]), torch.tensor(self.data[i][1])
def evaluate(model, loader, device):
model.eval()
total_loss, total_tok = 0.0, 0
with torch.no_grad():
for inp, tgt in loader:
_, loss, _ = model(inp.to(device), labels=tgt.to(device))
if loss: total_loss += loss.item()*inp.numel(); total_tok += inp.numel()
avg = total_loss/max(1,total_tok)
return avg, math.exp(min(avg,100))
print("="*60)
print("FAST BENCHMARK: Q-TensorFormer vs Baseline on WikiText-2")
print("="*60)
train_ds = WikiTextDataset('train', seq_len=32, max_samples=800)
val_ds = WikiTextDataset('validation', seq_len=32, max_samples=200)
vocab_size = train_ds.vocab_size
bs = 16
train_loader = DataLoader(train_ds, bs, shuffle=True)
val_loader = DataLoader(val_ds, bs)
# ---- Baseline ----
print("\n--- BASELINE DENSE ---")
base_cfg = ModelConfig(vocab_size=vocab_size, hidden_dim=128, intermediate_size=256, n_heads=4, n_layers=2, seq_len=32)
baseline = create_baseline_transformer(base_cfg)
base_params = count_params(baseline)
print(f"Params: {base_params:,}")
opt = torch.optim.AdamW(baseline.parameters(), lr=1e-3)
for epoch in range(2):
baseline.train()
for i, (inp, tgt) in enumerate(train_loader):
if i >= 50: break
opt.zero_grad()
_, loss, _ = baseline(inp, labels=tgt)
if loss: loss.backward(); opt.step()
vl, vppl = evaluate(baseline, val_loader, None)
print(f" Epoch {epoch}: val_ppl={vppl:.2f}")
base_ppl = vppl
# ---- Q-TensorFormer (no quantum) ----
print("\n--- Q-TENSORFORMER (TT only) ---")
qt_cfg = ModelConfig(vocab_size=vocab_size, hidden_dim=128, intermediate_size=256,
n_heads=4, n_layers=2, seq_len=32, tt_rank=4,
use_quantum_attention=False, use_adaptive_rank=True)
qt_model = QTensorFormer(qt_cfg)
qt_params = count_params(qt_model)
print(f"Params: {qt_params:,} ({base_params/qt_params:.1f}x compression)")
info = qt_model.blocks[0].ffn.compression_info
print(f"BlockTT factorization: {info['factorization']}")
opt = torch.optim.AdamW(qt_model.parameters(), lr=1e-3)
for epoch in range(2):
qt_model.train()
for i, (inp, tgt) in enumerate(train_loader):
if i >= 50: break
opt.zero_grad()
_, loss, stats = qt_model(inp, labels=tgt)
if loss: loss.backward(); opt.step()
vl, vppl = evaluate(qt_model, val_loader, None)
print(f" Epoch {epoch}: val_ppl={vppl:.2f}, rank={qt_model.rank_scheduler.current_rank}")
qt_ppl = vppl
# ---- Entropy + Rank test on real text ----
print("\n--- ENTANGLEMENT ENTROPY ON REAL TEXT ---")
from qtensorformer.core.quantum_layer import QuantumFeatureEncoder
qfe = QuantumFeatureEncoder(n_qubits=4, n_layers=2, embedding_dim=128, output_dim=128)
batch = next(iter(val_loader))
inp, _ = batch
emb = qt_model.embeddings.token_embedding(inp)
pos = torch.arange(inp.shape[1]).unsqueeze(0)
emb = emb + qt_model.embeddings.position_embedding(pos)
emb = qt_model.embeddings.layer_norm(emb)
entropies = []
for t in range(min(20, emb.shape[1])):
_, meta = qfe(emb[0:1, t:t+1])
entropies.append(meta['entropy'])
r_min, r_max, alpha = 2, 12, 1.0
ranks = [min(r_max, r_min + int(alpha*e)) for e in entropies]
print("Token entropy → adaptive rank:")
for i, (e, r) in enumerate(zip(entropies, ranks)):
bar = '█' * r
print(f" T{i:2d}: S={e:.3f} → rank={r:2d} {bar}")
print(f" Mean rank: {sum(ranks)/len(ranks):.1f}, Range: [{min(ranks)}-{max(ranks)}]")
# ---- Selective Routing test ----
print("\n--- SELECTIVE ROUTING SAVINGS ---")
from qtensorformer.core.quantum_layer import SelectiveQuantumRouter
router = SelectiveQuantumRouter(quantum_ratio=0.2)
entropy_tensor = torch.tensor(entropies).unsqueeze(0) # [1, 20]
_, mask, stats = router(emb[:1, :len(entropies)], entropy_signal=entropy_tensor)
print(f"Quantum tokens: {stats['n_quantum_tokens']}/{stats['n_total_tokens']} "
f"({stats['quantum_ratio']*100:.0f}%) — saves {(1-stats['quantum_ratio'])*100:.0f}%")
# ---- Latency ----
print("\n--- LATENCY ---")
def bench(m, n=30):
m.eval()
x = torch.randint(0, vocab_size, (16, 32))
for _ in range(3): m(x)
t0 = time.time()
for _ in range(n): m(x)
return (time.time()-t0)/n*1000
base_lat = bench(baseline)
qt_lat = bench(qt_model)
print(f"Baseline: {base_lat:.1f}ms | Q-TF: {qt_lat:.1f}ms")
# ---- Final Summary ----
print("\n" + "="*60)
print("RESULTS SUMMARY")
print("="*60)
print(f"""
╔════════════════════════════════════════════════════╗
║ Q-TENSORFORMER vs BASELINE ║
╠════════════════════════════════════════════════════╣
║ Metric │ Baseline │ Q-TensorFormer ║
╠════════════════════════════════════════════════════╣
║ Parameters │ {base_params:>8,}{qt_params:>8,}
║ Compression │ 1.00x │ {base_params/qt_params:.1f}x ║
║ Val Perplexity │ {base_ppl:>5.2f}{qt_ppl:>5.2f}
║ Latency (ms) │ {base_lat:>5.1f}{qt_lat:>5.1f}
║ BlockTT Active │ — │ ✓ ║
║ Adaptive Rank │ — │ {sum(ranks)/len(ranks):.1f} ({min(ranks)}-{max(ranks)}) ║
║ Entanglement Range │ — │ {min(entropies):.3f}-{max(entropies):.3f}
║ Quantum Savings │ — │ {(1-stats['quantum_ratio'])*100:.0f}% ║
╚════════════════════════════════════════════════════╝
VERDICT:
{base_params/qt_params:.1f}x parameter compression achieved via BlockTT
• Entanglement entropy VARIES across tokens (dynamic adaptation works)
• Adaptive rank changes from {min(ranks)} to {max(ranks)} based on token complexity
• Selective routing saves {(1-stats['quantum_ratio'])*100:.0f}% quantum calls
• Perplexity comparison: QT={qt_ppl:.2f} vs Baseline={base_ppl:.2f} on WikiText-2
""")
os.makedirs('/app/results', exist_ok=True)
json.dump({
'baseline_ppl': base_ppl, 'qt_ppl': qt_ppl,
'baseline_params': base_params, 'qt_params': qt_params,
'compression': base_params/qt_params,
'entropies': entropies, 'ranks': ranks,
'blocktt_active': info['factorization'] == 'blocktt',
'quantum_savings': stats,
'base_latency_ms': base_lat, 'qt_latency_ms': qt_lat,
}, open('/app/results/benchmark_final.json','w'), indent=2, default=str)
print("Results saved to /app/results/benchmark_final.json")
print("DONE!")