# PyTorch: [distributed] Tear down test_init_with_idx explicitly (#200033)

**Published:** 2026-10-09T06:41:08+00:00  
**Source:** PyTorch GitHub Releases  
**Category:** bigtech-foss  
**Canonical URL:** https://fosswire.org/news/pytorch-distributed-tear-down-testinitwithidx-explicitly-200.html  

## Executive Summary
Fixes #200032 Summary distributed/test_c10d_nccl.py::ProcessGroupNCCLGroupTest::test_init_with_idx fails intermittently with the NCCL timeout watchdog observing cudaErrorCudartUnloading ("driver shutting down") during interpreter shutdown, followed by abortProcess() -> SIGABRT (exit -6, expected 0). Error signature: [rank0]: WorkNCCL: CUDA error during end event query: CUDA error: driver shutting down (cudaErrorCudartUnloading) ProcessGroupNCCL: timeout watchdog detected operation error -> abortProcess() -> SIGABRT(6) Root cause: The test never calls dist.destroy_process_group(), so the nccl2 backend is torn down by the destructor during interpreter shutdown while its...

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