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---
name: semantic-search-setup-1-cpu-vs-gpu
description: 'Sub-skill of semantic-search-setup: 1. CPU vs GPU (+3).'
version: 1.1.0
category: data
type: reference
scripts_exempt: true
---
# 1. CPU vs GPU (+3)
## 1. CPU vs GPU
```python
# Force CPU (more stable, sufficient for most cases)
os.environ['CUDA_VISIBLE_DEVICES'] = ''
# Use GPU if available
# Remove the above line and ensure CUDA is installed
```
## 2. Batch Processing
```python
# Larger batches = faster but more memory
batch_size = 100 # Default
batch_size = 500 # If you have 16GB+ RAM
batch_size = 50 # If memory constrained
```
## 3. Progress Tracking
```python
from tqdm import tqdm
for i in tqdm(range(0, total, batch_size)):
# Process batch
pass
```
## 4. Incremental Updates
```python
# Only embed new chunks
cursor.execute('''
SELECT c.id, c.chunk_text
FROM chunks c
LEFT JOIN embeddings e ON c.id = e.chunk_id
WHERE e.id IS NULL
''')
```
