pytorch

2367e71f - Disable ProfilingGraphExecutorImpl for mobile (#30067)

Disable ProfilingGraphExecutorImpl for mobile (#30067) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/30067 ### Summary The mobile build has been broken since last week due to a runtime error caused by a missing operator in JIT: ```shell libc++abi.dylib: terminating with uncaught exception of type torch::jit::script::ErrorReport: Unknown builtin op: aten::_adaptive_avg_pool2d_backward. Could not find any similar ops to aten::_adaptive_avg_pool2d_backward. This op may not exist or may not be currently supported in TorchScript. : at <string>:9:28 grad_self = grad.expand(self.size()) / (self_size[-1] * self_size[-2]) else: grad_self = torch._adaptive_avg_pool2d_backward(grad, self) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <--- HERE return grad_self ``` ### How this happens Since we've disabled the autograd for the opensourced version, the `backward` ops won't get registered by JIT. When `forward` runs, a `GraphExecutor` will be created according to the value of `executor_mode`. In the mobile case , this one was set to true, which gives us the `ProfilingGraphExecutorImpl` object. Seems like this executor will eventually try to emit IR for autograd schemas? which causes the error. ### Fix There are two ways to fix it. 1. Add a macro to disable `profiling_mode` as well as `executor_mode` on mobile. Like what `FBCODE_CAFFE2` does [here](https://github.com/pytorch/pytorch/blob/master/torch/csrc/jit/profiling_graph_executor_impl.cpp#L22). 2. Disable the two modes in runtime, by calling ` torch::jit::getExecutorMode() = false;` before calling forward. (IMO, The second fix is sort of a workaround as it doesn't make sense from a user perspective (Why I need to do this). But the up side is that we don't have to introduce yet another macro ) Feel free to drop comments, if there is a better way to fix it. ### How this was not detected by our mobile CI We're working on adding runtime tests to our mobile build to prevent similar issues like this. ### Test Plan - The error above disappears - Don't break CI cc AshkanAliabadi Test Plan: Imported from OSS Differential Revision: D18605998 Pulled By: xta0 fbshipit-source-id: 11fa85c2b44d54bc28a9c45731af0f5d17d5804c