Option "Set as Default Scheduler" of "tractorscheduler" node was not set "tractorscheduler" , so I set the "Default Top Scheduler" in the "topgeometry" node directly to "tractorscheduler".

After setting the option, the error message "unknown pdg scheduler type:tractorscheduler" is displayed.

I added the tractor site package path to my PYTHONPATH environment.

Does anyone know about this issue?

This likely means that the Tractor Python library isn't loaded properly. You can verify that by opening a Python Shell in your Houdini session, and attempting to import one of the components of the Python module. For example, verify that import tractor.api.author succeeds.

Note that if you're using a Python 3 build of Houdini, you'll also need to use the Python 3 version of the Tractor Python API or it won't be possible for Houdini to import it.

tpetrick
This likely means that the Tractor Python library isn't loaded properly. You can verify that by opening a Python Shell in your Houdini session, and attempting to import one of the components of the Python module. For example, verify that import tractor.api.author succeeds.

Note that if you're using a Python 3 build of Houdini, you'll also need to use the Python 3 version of the Tractor Python API or it won't be possible for Houdini to import it.

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Thank you. I set the path with tractor python3 aip, now Set as Default Scheduler Option works well.

However, another problem arose.

Any idea why this error is occurring?

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/opt/hfs19.5/python/bin/python /core/tmp/houdini/test_render/31890/pdgtemp/scripts/pdgmq.py --xmlport 9012 --relayport 9013 --connectionfile /core/tmp/houdini/test_render/31890/pdgtemp/pdgmq_server.txt --start
PDG_MQ rf025 9012 9013
18:44:27: Message Queue Server Running
18:44:37: 0.0 mps, avg=0.0ms, max=0.0ms




Traceback (most recent call last):
File "/core/tmp/houdini/test_render/31890/pdgtemp/scripts/pdgmq.py", line 795, in <module>
Caught Signal 2, signalling child 19175
File "/core/tmp/houdini/test_render/31890/pdgtemp/scripts/pdgmq.py", line 784, in main
exit_code = _start_server(args.host, args.xmlport, args.relayport,
File "/core/tmp/houdini/test_render/31890/pdgtemp/scripts/pdgmq.py", line 731, in _start_server
relay_server_instance.handle_request()
File "/opt/hfs19.5/python/lib/python3.9/socketserver.py", line 294, in handle_request
ready = selector.select(timeout)
File "/opt/hfs19.5/python/lib/python3.9/selectors.py", line 416, in select
fd_event_list = self._selector.poll(timeout)
KeyboardInterrupt

try

PDGMQ_USE_IP=1

This was our firewall and port issue.
After setting the port in the firewall it works well.

Thanks for your answer.