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# Motivation Fix https://github.com/pytorch/pytorch/issues/143543 # Solution We should raise python exception instead of aborting... # Additional Context without this PR: ```python >>> import torch >>> torch.accelerator.current_stream(torch.accelerator.device_count()) terminate called after throwing an instance of 'c10::Error' what(): device is out of range, device is 2, total number of device is 2. Exception raised from check_device_index at /home/dvrogozh/git/pytorch/pytorch/c10/xpu/XPUFunctions.h:36 (most recent call first): frame #0: c10::Error::Error(c10::SourceLocation, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >) + 0xac (0x7f30707eb95c in /home/dvrogozh/git/pytorch/pytorch/torch/lib/libc10.so) frame #1: c10::detail::torchCheckFail(char const*, char const*, unsigned int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) + 0xf3 (0x7f307078fc57 in /home/dvrogozh/git/pytorch/pytorch/torch/lib/libc10.so) frame #2: <unknown function> + 0x19a3e (0x7f3070c2ba3e in /home/dvrogozh/git/pytorch/pytorch/torch/lib/libc10_xpu.so) frame #3: c10::xpu::getCurrentXPUStream(signed char) + 0x2f (0x7f3070c2c83f in /home/dvrogozh/git/pytorch/pytorch/torch/lib/libc10_xpu.so) frame #4: <unknown function> + 0x1ca35 (0x7f3070c2ea35 in /home/dvrogozh/git/pytorch/pytorch/torch/lib/libc10_xpu.so) frame #5: <unknown function> + 0x653f15 (0x7f3083391f15 in /home/dvrogozh/git/pytorch/pytorch/torch/lib/libtorch_python.so) frame #6: <unknown function> + 0x39e5f2 (0x7f30830dc5f2 in /home/dvrogozh/git/pytorch/pytorch/torch/lib/libtorch_python.so) <omitting python frames> frame #20: <unknown function> + 0x29d90 (0x7f308b19bd90 in /lib/x86_64-linux-gnu/libc.so.6) frame #21: __libc_start_main + 0x80 (0x7f308b19be40 in /lib/x86_64-linux-gnu/libc.so.6) Aborted (core dumped) ``` with this PR: ```python >>> import torch >>> torch.accelerator.current_stream(torch.accelerator.device_count()) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/pt-gpu/4T-4652/guangyey/stock-pytorch/torch/accelerator/__init__.py", line 123, in current_stream return torch._C._accelerator_getStream(device_index) RuntimeError: The device index is out of range. It must be in [0, 2), but got 2. ``` Pull Request resolved: https://github.com/pytorch/pytorch/pull/143550 Approved by: https://github.com/EikanWang, https://github.com/dvrogozh, https://github.com/albanD