Timeout exceeded?

Hi,

I am trying to use ANSYS via Python as follows:

ansys = pyansys.Mapdl(run_location=path,override=True, start_timeout=30, loglevel='INFO')

I am able to launch the GUI and hit “Run” with the specific working directory and ANSYS seems to correctly connect. But I don’t get any response in the Python terminal and it eventually hangs up i.e. it gets stuck on that line of code and never proceeds. Any ideas why? I am using Python 3.6.1 and ANSYS 16.2.

Traceback (most recent call last):
  File "/XXX/.local/lib64/python3.6/site-packages/pyansys/mapdl.py", line 542, in _open_process
    index = self.process.expect(['BEGIN:', 'CONTINUE'], timeout=timeout)
  File "/XXX/apps/python/3.6.1/x86_64/lib64/python3.6/site-packages/pexpect/spawnbase.py", line 321, in expect
    timeout, searchwindowsize, async)
  File "/XXX/apps/python/3.6.1/x86_64/lib64/python3.6/site-packages/pexpect/spawnbase.py", line 345, in expect_list
    return exp.expect_loop(timeout)
  File "/XXX/apps/python/3.6.1/x86_64/lib64/python3.6/site-packages/pexpect/expect.py", line 107, in expect_loop
    return self.timeout(e)
  File "/XXX/apps/python/3.6.1/x86_64/lib64/python3.6/site-packages/pexpect/expect.py", line 70, in timeout
    raise TIMEOUT(msg)
pexpect.exceptions.TIMEOUT: Timeout exceeded.
<pexpect.pty_spawn.spawn object at 0x2b3efa61b2e8>
command: /XXX/apps/ansys/v195/ansys/bin/launcher195
args: [/XXX/apps/ansys/v195/ansys/bin/launcher195', '-j', 'file', '-np', '2']
buffer (last 100 chars): b''
before (last 100 chars): b''
after: <class 'pexpect.exceptions.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: False
pid: 8879
child_fd: 6
closed: False
timeout: 30
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: None
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
    0: re.compile("b'BEGIN:'")
    1: re.compile("b'CONTINUE'")

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "XXX/main.py", line 200, in <module>
    kwag_['objective'] = Optitemp(random_seed=random_seed_)
  File "/XXX/experiments/test_functions/binary_categorical_debugging.py", line 31, in __init__
    self.ansys = pyansys.Mapdl(run_location=path,override=True, start_timeout=30, loglevel='INFO')
  File "/XXX/.local/lib64/python3.6/site-packages/pyansys/mapdl.py", line 480, in __init__
    self._open(additional_switches)
  File "/XXX/.local/lib64/python3.6/site-packages/pyansys/mapdl.py", line 492, in _open
    self._open_process(self.nproc, self.start_timeout, additional_switches)
  File "/XXX/.local/lib64/python3.6/site-packages/pyansys/mapdl.py", line 544, in _open_process
    raise Exception(self.process.before.decode('utf-8'))
Exception

[akaszynski]

If you feel this solved the problem please close the issue. I’m sorry that MATLAB’s not working, but I recommend transitioning over to Python. These days, the number of modules out there for Python is quite astounding, and it transitions much better from academia to industry (if that’s where you’re coming from).

[akaszynski]

Try running with prefer_pexpect=False when creating the instance of Mapdl.