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""" JIT scripting/tracing utils
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Hacked together by / Copyright 2020 Ross Wightman
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"""
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import os
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import torch
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def set_jit_legacy():
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""" Set JIT executor to legacy w/ support for op fusion
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This is hopefully a temporary need in 1.5/1.5.1/1.6 to restore performance due to changes
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in the JIT exectutor. These API are not supported so could change.
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"""
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#
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assert hasattr(torch._C, '_jit_set_profiling_executor'), "Old JIT behavior doesn't exist!"
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torch._C._jit_set_profiling_executor(False)
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torch._C._jit_set_profiling_mode(False)
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torch._C._jit_override_can_fuse_on_gpu(True)
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#torch._C._jit_set_texpr_fuser_enabled(True)
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def set_jit_fuser(fuser):
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if fuser == "te":
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# default fuser should be == 'te'
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torch._C._jit_set_profiling_executor(True)
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torch._C._jit_set_profiling_mode(True)
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torch._C._jit_override_can_fuse_on_cpu(False)
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torch._C._jit_override_can_fuse_on_gpu(True)
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torch._C._jit_set_texpr_fuser_enabled(True)
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elif fuser == "old" or fuser == "legacy":
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torch._C._jit_set_profiling_executor(False)
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torch._C._jit_set_profiling_mode(False)
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torch._C._jit_override_can_fuse_on_gpu(True)
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torch._C._jit_set_texpr_fuser_enabled(False)
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elif fuser == "nvfuser" or fuser == "nvf":
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os.environ['PYTORCH_NVFUSER_DISABLE_FALLBACK'] = '1'
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os.environ['PYTORCH_NVFUSER_DISABLE_FMA'] = '1'
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os.environ['PYTORCH_NVFUSER_JIT_OPT_LEVEL'] = '0'
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torch._C._jit_set_texpr_fuser_enabled(False)
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torch._C._jit_set_profiling_executor(True)
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torch._C._jit_set_profiling_mode(True)
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torch._C._jit_can_fuse_on_cpu()
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torch._C._jit_can_fuse_on_gpu()
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torch._C._jit_override_can_fuse_on_cpu(False)
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torch._C._jit_override_can_fuse_on_gpu(False)
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torch._C._jit_set_nvfuser_guard_mode(True)
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torch._C._jit_set_nvfuser_enabled(True)
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else:
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assert False, f"Invalid jit fuser ({fuser})"
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