gmeeker opened a new issue, #15771:
URL: https://github.com/apache/tvm/issues/15771
tvmc tune appears to have broken between 0.12.0 and 0.13.0.
### Expected behavior
Produce an autotuner json file (which worked in 0.12.0).
### Actual behavior
```
[Task 1/25] Current/Best: 0.00/ 0.00 GFLOPS | Progress: (0/40) | 0.00
sException in thread Thread-1:
Traceback (most recent call last):
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/threading.py",
line 932, in _bootstrap_inner
self.run()
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/threading.py",
line 870, in run
self._target(*self._args, **self._kwargs)
File "/Users/gmeeker/src/tvm_0.13.0/python/tvm/rpc/server.py", line 272,
in _listen_loop
_serving(conn, addr, opts, load_library)
File "/Users/gmeeker/src/tvm_0.13.0/python/tvm/rpc/server.py", line 143,
in _serving
server_proc.start()
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/process.py",
line 121, in start
self._popen = self._Popen(self)
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/context.py",
line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/context.py",
line 284, in _Popen
return Popen(process_obj)
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/popen_spawn_posix.py",
line 32, in __init__
super().__init__(process_obj)
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/popen_fork.py",
line 19, in __init__
self._launch(process_obj)
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/popen_spawn_posix.py",
line 47, in _launch
reduction.dump(process_obj, fp)
File
"/usr/local/Cellar/[email protected]/3.8.18/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/reduction.py",
line 60, in dump
ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object '_serving.<locals>._serve_loop'
```
This looks similar to #8363 and #8347 although those are older than 0.12.0
which is working on macOS.
### Environment
macOS 13.5.2
Python 3.8.18
TVM 0.13.0 or current head of main branch
### Steps to reproduce
Compiled using brew per install from source instructions:
https://tvm.apache.org/docs/install/from_source.html
Run `tvmc tune --target "llvm" --output resnet50-v2-7-autotuner_records.json
resnet50-v2-7.onnx` as described here:
https://tvm.apache.org/docs/tutorial/tvmc_command_line_driver.html
### Triage
* needs-triage
* tune:autotvm
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