init commit

scripts/compare_reranker.py

@@ -0,0 +1,138 @@
+import os
+import time
+import argparse
+import logging
+import torch
+import psutil
+import tracemalloc
+import numpy as np
+from utils.config_loader import get_config
+from models.bge_reranker import BGERerankerModel
+from data.dataset import BGERerankerDataset
+from transformers import AutoTokenizer
+from evaluation.metrics import compute_reranker_metrics
+from torch.utils.data import DataLoader
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger("compare_reranker")
+
+def parse_args():
+    """Parse command-line arguments for reranker comparison."""
+    parser = argparse.ArgumentParser(description="Compare fine-tuned and baseline reranker models.")
+    parser.add_argument('--finetuned_model_path', type=str, required=True, help='Path to fine-tuned reranker model')
+    parser.add_argument('--baseline_model_path', type=str, required=True, help='Path to baseline reranker model')
+    parser.add_argument('--data_path', type=str, required=True, help='Path to evaluation data (JSONL)')
+    parser.add_argument('--batch_size', type=int, default=16, help='Batch size for inference')
+    parser.add_argument('--max_samples', type=int, default=1000, help='Max samples to benchmark (for speed)')
+    parser.add_argument('--device', type=str, default='cuda', help='Device to use (cuda, cpu, npu)')
+    parser.add_argument('--output', type=str, default='compare_reranker_results.txt', help='File to save comparison results')
+    parser.add_argument('--k_values', type=int, nargs='+', default=[1, 5, 10], help='K values for metrics@k')
+    return parser.parse_args()
+
+def measure_memory():
+    """Measure the current memory usage of the process."""
+    process = psutil.Process(os.getpid())
+    return process.memory_info().rss / (1024 * 1024)  # MB
+
+def run_reranker(model_path, data_path, batch_size, max_samples, device):
+    """
+    Run inference on a reranker model and measure throughput, latency, and memory.
+    Args:
+        model_path (str): Path to the reranker model.
+        data_path (str): Path to the evaluation data.
+        batch_size (int): Batch size for inference.
+        max_samples (int): Maximum number of samples to process.
+        device (str): Device to use (cuda, cpu, npu).
+    Returns:
+        tuple: (throughput, latency, mem_mb, all_scores, all_labels)
+    """
+    model = BGERerankerModel(model_name_or_path=model_path, device=device)
+    tokenizer = model.tokenizer if hasattr(model, 'tokenizer') and model.tokenizer else AutoTokenizer.from_pretrained(model_path)
+    dataset = BGERerankerDataset(data_path, tokenizer, is_train=False)
+    dataloader = DataLoader(dataset, batch_size=batch_size)
+    model.eval()
+    model.to(device)
+    n_samples = 0
+    times = []
+    all_scores = []
+    all_labels = []
+    tracemalloc.start()
+    with torch.no_grad():
+        for batch in dataloader:
+            if n_samples >= max_samples:
+                break
+            start = time.time()
+            outputs = model.model(
+                input_ids=batch['input_ids'].to(device),
+                attention_mask=batch['attention_mask'].to(device)
+            )
+            torch.cuda.synchronize() if device.startswith('cuda') else None
+            end = time.time()
+            times.append(end - start)
+            n = batch['input_ids'].shape[0]
+            n_samples += n
+            # For metrics: collect scores and labels
+            scores = outputs.logits if hasattr(outputs, 'logits') else outputs[0]
+            all_scores.append(scores.cpu().numpy())
+            all_labels.append(batch['labels'].cpu().numpy())
+    current, peak = tracemalloc.get_traced_memory()
+    tracemalloc.stop()
+    throughput = n_samples / sum(times)
+    latency = np.mean(times) / batch_size
+    mem_mb = peak / (1024 * 1024)
+    # Prepare for metrics
+    all_scores = np.concatenate(all_scores, axis=0)
+    all_labels = np.concatenate(all_labels, axis=0)
+    return throughput, latency, mem_mb, all_scores, all_labels
+
+def main():
+    """Run reranker comparison with robust error handling and config-driven defaults."""
+    parser = argparse.ArgumentParser(description="Compare reranker models.")
+    parser.add_argument('--device', type=str, default=None, help='Device to use (cuda, npu, cpu)')
+    parser.add_argument('--finetuned_model_path', type=str, required=True, help='Path to fine-tuned reranker model')
+    parser.add_argument('--baseline_model_path', type=str, required=True, help='Path to baseline reranker model')
+    parser.add_argument('--data_path', type=str, required=True, help='Path to evaluation data (JSONL)')
+    parser.add_argument('--batch_size', type=int, default=16, help='Batch size for inference')
+    parser.add_argument('--max_samples', type=int, default=1000, help='Max samples to benchmark (for speed)')
+    parser.add_argument('--output', type=str, default='compare_reranker_results.txt', help='File to save comparison results')
+    parser.add_argument('--k_values', type=int, nargs='+', default=[1, 5, 10], help='K values for metrics@k')
+    args = parser.parse_args()
+    # Load config and set defaults
+    config = get_config()
+    device = args.device or config.get('hardware', {}).get('device', 'cuda')  # type: ignore[attr-defined]
+    try:
+        # Fine-tuned model
+        logger.info("Running fine-tuned reranker...")
+        ft_throughput, ft_latency, ft_mem, ft_scores, ft_labels = run_reranker(
+            args.finetuned_model_path, args.data_path, args.batch_size, args.max_samples, device)
+        ft_metrics = compute_reranker_metrics(ft_scores, ft_labels, k_values=args.k_values)
+        # Baseline model
+        logger.info("Running baseline reranker...")
+        bl_throughput, bl_latency, bl_mem, bl_scores, bl_labels = run_reranker(
+            args.baseline_model_path, args.data_path, args.batch_size, args.max_samples, device)
+        bl_metrics = compute_reranker_metrics(bl_scores, bl_labels, k_values=args.k_values)
+        # Output comparison
+        with open(args.output, 'w') as f:
+            f.write(f"Metric\tBaseline\tFine-tuned\tDelta\n")
+            for k in args.k_values:
+                for metric in [f'accuracy@{k}', f'map@{k}', f'mrr@{k}', f'ndcg@{k}']:
+                    bl = bl_metrics.get(metric, 0)
+                    ft = ft_metrics.get(metric, 0)
+                    delta = ft - bl
+                    f.write(f"{metric}\t{bl:.4f}\t{ft:.4f}\t{delta:+.4f}\n")
+            for metric in ['map', 'mrr']:
+                bl = bl_metrics.get(metric, 0)
+                ft = ft_metrics.get(metric, 0)
+                delta = ft - bl
+                f.write(f"{metric}\t{bl:.4f}\t{ft:.4f}\t{delta:+.4f}\n")
+            f.write(f"Throughput (samples/sec)\t{bl_throughput:.2f}\t{ft_throughput:.2f}\t{ft_throughput-bl_throughput:+.2f}\n")
+            f.write(f"Latency (ms/sample)\t{bl_latency*1000:.2f}\t{ft_latency*1000:.2f}\t{(ft_latency-bl_latency)*1000:+.2f}\n")
+            f.write(f"Peak memory (MB)\t{bl_mem:.2f}\t{ft_mem:.2f}\t{ft_mem-bl_mem:+.2f}\n")
+        logger.info(f"Comparison results saved to {args.output}")
+        print(f"\nComparison complete. See {args.output} for details.")
+    except Exception as e:
+        logging.error(f"Reranker comparison failed: {e}")
+        raise
+
+if __name__ == '__main__':
+    main()