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[Relay][VM] Add autotvm context when compile #4062

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Merged
zhiics merged 1 commit into from
Oct 5, 2019
Merged

[Relay][VM] Add autotvm context when compile #4062

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12 changes: 11 additions & 1 deletion python/tvm/relay/backend/vm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
import numpy as np

import tvm
from tvm import autotvm
from tvm._ffi.runtime_ctypes import TVMByteArray
from . import _vm
from . import vmobj as _obj
Expand Down Expand Up @@ -186,7 +187,16 @@ def compile(self, mod, target=None, target_host=None):
if not target_host:
target_host = "llvm" if tvm.module.enabled("llvm") else "stackvm"
target_host = tvm.target.create(target_host)
self._compile(mod, target, target_host)

# If current dispatch context is fallback context (the default root context),
# then load pre-tuned parameters from TopHub
if isinstance(autotvm.DispatchContext.current, autotvm.FallbackContext):
tophub_context = autotvm.tophub.context(list(target.values()))
else:
tophub_context = autotvm.util.EmptyContext()

with tophub_context:
self._compile(mod, target, target_host)
return VirtualMachine(self._get_vm())


Expand Down