Jax: Commitment Issues
17 hours ago
- #Performance
- #JAX
- #GPU
- JAX arrays created in a default_device context are not committed, leading to unexpected GPU usage and slow retrieval times.
- Using jax.device_put to commit an array to a specific device significantly reduces lookup times, from over 1.2 seconds to less than 0.0002 seconds.
- Without commitment, each retrieval from a CPU array triggers GPU spikes and high latency, impacting performance in scenarios like LLM training loops.