Fix RuntimeError: CUDA out of memory (PyTorch)
Fix PyTorch CUDA out-of-memory errors with profiling, batch and sequence controls, AMP, checkpointing, allocator tuning, distributed fixes, and GPU diagnostics.
3 articles
Fix PyTorch CUDA out-of-memory errors with profiling, batch and sequence controls, AMP, checkpointing, allocator tuning, distributed fixes, and GPU diagnostics.
The traceback lies because CUDA runs async. Get the real line with CUDA_LAUNCH_BLOCKING=1 or the CPU, then fix the out-of-range index behind it.
The fastest test is torch.version.cuda — if it's None you have a CPU-only wheel. PyTorch bundles its own CUDA runtime, so you only need the NVIDIA driver.