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RLlib Table of Contents

Training APIs


Models, Preprocessors, and Action Distributions


Offline Datasets

Concepts and Custom Algorithms



Package Reference


If you encounter errors like blas_thread_init: pthread_create: Resource temporarily unavailable when using many workers, try setting OMP_NUM_THREADS=1. Similarly, check configured system limits with ulimit -a for other resource limit errors.

If you encounter out-of-memory errors, consider setting redis_max_memory and object_store_memory in ray.init() to reduce memory usage.

For debugging unexpected hangs or performance problems, you can run ray stack to dump the stack traces of all Ray workers on the current node, and ray timeline to dump a timeline visualization of tasks to a file.

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