Thanks to visit codestin.com
Credit goes to github.com

Skip to content

f2py throws error on VM #12136

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom
Closed
briantoby opened this issue Oct 10, 2018 · 1 comment
Closed

f2py throws error on VM #12136

briantoby opened this issue Oct 10, 2018 · 1 comment
Assignees
@HaoZeke
Labels
component: numpy.distutils component: numpy.f2py

Comments

@briantoby
Copy link

briantoby commented Oct 10, 2018 •
edited
Loading

f2py fails on VM that is not configured for multiple CPUs

File "...\numpy\distutils\misc_util.py" (line 99, function get_num_build_jobs) assumes that multiprocessing multiprocessing.cpu_count will always return a number. At least on the VM I use to do windows builds, I get an exception, as below.

Solution is a patch to put the call in a try/except block and recover:

    try:
        cpu_count = len(os.sched_getaffinity(0))
    except AttributeError:
       cpu_count = multiprocessing.cpu_count()

to

    try:
        cpu_count = len(os.sched_getaffinity(0))
    except AttributeError:
        try:
            cpu_count = multiprocessing.cpu_count()
        except NotImplementedError:
            cpu_count = 1

Error message:

Traceback (most recent call last):
  File "C:\Users\toby\miniconda2-64\Scripts\f2py.py", line 28, in <module>
    main()
  File "C:\Users\toby\miniconda2-64\lib\site-packages\numpy\f2py\f2py2e.py", line 648, in main
    run_compile()
  File "C:\Users\toby\miniconda2-64\lib\site-packages\numpy\f2py\f2py2e.py", line 633, in run_compile
    setup(ext_modules=[ext])
  File "C:\Users\toby\miniconda2-64\lib\site-packages\numpy\distutils\core.py", line 169, in setup
    return old_setup(**new_attr)
  File "C:\Users\toby\miniconda2-64\lib\distutils\core.py", line 151, in setup
    dist.run_commands()
  File "C:\Users\toby\miniconda2-64\lib\distutils\dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "C:\Users\toby\miniconda2-64\lib\distutils\dist.py", line 972, in run_command
    cmd_obj.run()
  File "C:\Users\toby\miniconda2-64\lib\site-packages\numpy\distutils\command\build.py", line 47, in run
    old_build.run(self)
  File "C:\Users\toby\miniconda2-64\lib\distutils\command\build.py", line 127, in run
    self.run_command(cmd_name)
  File "C:\Users\toby\miniconda2-64\lib\distutils\cmd.py", line 326, in run_command
    self.distribution.run_command(command)
  File "C:\Users\toby\miniconda2-64\lib\distutils\dist.py", line 972, in run_command
    cmd_obj.run()
  File "C:\Users\toby\miniconda2-64\lib\site-packages\numpy\distutils\command\build_ext.py", line 262, in run
    self.build_extensions()
  File "C:\Users\toby\miniconda2-64\lib\distutils\command\build_ext.py", line 449, in build_extensions
    self.build_extension(ext)
  File "C:\Users\toby\miniconda2-64\lib\site-packages\numpy\distutils\command\build_ext.py", line 380, in build_extension
    **kws)
  File "C:\Users\toby\miniconda2-64\lib\site-packages\numpy\distutils\ccompiler.py", line 246, in CCompiler_compile
    jobs = get_num_build_jobs()
  File "C:\Users\toby\miniconda2-64\lib\site-packages\numpy\distutils\misc_util.py", line 99, in get_num_build_jobs
    cpu_count = multiprocessing.cpu_count()
  File "C:\Users\toby\miniconda2-64\lib\multiprocessing\__init__.py", line 136, in cpu_count
    raise NotImplementedError('cannot determine number of cpus')
NotImplementedError: cannot determine number of cpus

Numpy/Python version information:

'2.7.15 |Anaconda, Inc.| (default, May 1 2018, 18:37:09) [MSC v.1500 64 bit (AMD64)]'
numpy-1.15.2 (via anaconda)
@HaoZeke HaoZeke self-assigned this Aug 25, 2021
@HaoZeke HaoZeke mentioned this issue Aug 25, 2021
Closed
@HaoZeke
Copy link
Member

HaoZeke commented Sep 5, 2023

No longer reproducible / valid after #24532.

@HaoZeke HaoZeke closed this as completed Sep 5, 2023
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@HaoZeke HaoZeke

Labels
component: numpy.distutils component: numpy.f2py
Projects
f2py usage
Status: Done
Milestone
No milestone
Development

No branches or pull requests
3 participants
@pearu @HaoZeke @briantoby