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Save ishan1608/87cb762f31b7af70a867 to your computer and use it in GitHub Desktop.
| """Heater | |
| A program that spawns as much number of processes as there are CPUs on the computer. | |
| This keeps the core temprature high. | |
| I made this so that my fingers feel more comfortable while working on my laptop during winter. | |
| Caution : An eye should be kept on the CPU temprature so that when it is getting too hot, | |
| the prgoram needs to be killed; else it can damage the CPU. | |
| Author : Ishan | |
| Email : ishanatmuzaffarpur@gmail.com | |
| """ | |
| import multiprocessing | |
| import sys | |
| def round_robin_count(): | |
| while(True): | |
| number = 0 | |
| if(number >= sys.maxsize): | |
| number = 0 | |
| else: | |
| number = number + 1 | |
| if __name__ == "__main__": | |
| if len(sys.argv) == 2 and sys.argv[1] == '--about': | |
| print(__doc__) | |
| elif len(sys.argv) == 2 and sys.argv[1] == '--help': | |
| print('Heater', 'USAGE: python3 ' + sys.argv[0] + ' [option]', sep='\n') | |
| print('To read about.', 'python3 ' + sys.argv[0] + ' --about' ,sep=' ') | |
| print('To see this help message.', 'python3 ' + sys.argv[0] + ' --help', sep=' ') | |
| else: | |
| process_count = 1 | |
| print('Heating up the CPU') | |
| while(process_count <= multiprocessing.cpu_count()): | |
| process_to_be_not_seen_again = multiprocessing.Process(target=round_robin_count) | |
| process_to_be_not_seen_again.start() | |
| process_count += 1 |
Doesn't run on macOS 11.3.1 with Python 3.9.1:
Heating up the CPU
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 116, in spawn_main
exitcode = _main(fd, parent_sentinel)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 125, in _main
prepare(preparation_data)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 236, in prepare
_fixup_main_from_path(data['init_main_from_path'])
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 287, in _fixup_main_from_path
main_content = runpy.run_path(main_path,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 268, in run_path
return _run_module_code(code, init_globals, run_name,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 97, in _run_module_code
_run_code(code, mod_globals, init_globals,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "/Users/hacker1024/Downloads/heater.py", line 37, in <module>
process_to_be_not_seen_again.start()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/process.py", line 121, in start
self._popen = self._Popen(self)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/context.py", line 284, in _Popen
return Popen(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_spawn_posix.py", line 32, in __init__
super().__init__(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_fork.py", line 19, in __init__
self._launch(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_spawn_posix.py", line 42, in _launch
prep_data = spawn.get_preparation_data(process_obj._name)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 154, in get_preparation_data
_check_not_importing_main()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 134, in _check_not_importing_main
raise RuntimeError('''
RuntimeError:
An attempt has been made to start a new process before the
current process has finished its bootstrapping phase.
This probably means that you are not using fork to start your
child processes and you have forgotten to use the proper idiom
in the main module:
if __name__ == '__main__':
freeze_support()
...
The "freeze_support()" line can be omitted if the program
is not going to be frozen to produce an executable.
@hacker1024 I never owned a macbook, so couldn't test it on mac os.
If you find a solution let me know, I'll update the gist. And if I find a solution that works. I'll update the gist here.
Update: As it turns out just wrapping the main code in if __name__ == '__main__': solves the problem.
For more context you can look at this comment https://stackoverflow.com/questions/61931669/python-multiprocessing-runtimeerror-an-attempt-has-been-made-to-start-a-new-pro#comment109560442_61931669
How do you use it or like turn it on or control it or whatever
@TreWade1469 I execute the python script and when I feel my fingers are warm enough, I kill the process using ctrl + c.
How do you download it, and turn it on?
@TreWade1469 Running a python script is a pretty basic step. (Not that I am assuming anything here).
But, if you don't know how to do that. May I please ask you not to run this script and rather first learn the basics of python first.
There are tons of tutorials/courses available on the internet.
Please go through them first as running this script could be dangerous and kill your device.
I don't want you to mistakenly harm your device.
Ok thanks
@ishan1608
Instead of
process_to_be_not_seen_again = multiprocessing.Process(target=round_robin_count)
process_to_be_not_seen_again.start()
Use:
if __name__ == "__main__":
process_to_be_not_seen_again = multiprocessing.Process(target=round_robin_count)
process_to_be_not_seen_again.start()
@Speed3k-python That piece of code is already inside the if __name__ == "__main__": block.
What would adding another redundant condition do?
epic this helps