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Spindle breaks Python subprocess #218
Description
The h5bench and lbann failures in the E4S testsuite are caused by Python's subprocess.run failing to find executables under Spindle:
spindleuser@spindlenode:~$ cat subproc.py
import subprocess
result = subprocess.run(["/bin/true"], check=True)
print(f"returned {result.returncode}")
spindleuser@spindlenode:~$ python3 subproc.py
returned 0
spindleuser@spindlenode:~$ spindle python3 subproc.py
Traceback (most recent call last):
File "/home/spindleuser/subproc.py", line 3, in <module>
result = subprocess.run(["/bin/true"], check=True)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/subprocess.py", line 548, in run
with Popen(*popenargs, **kwargs) as process:
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/subprocess.py", line 1026, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "/usr/lib/python3.12/subprocess.py", line 1955, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/bin/true'
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