pyStartServer not working

[avlsi]

Hi,

After doing load("python_server.il")
Unable to do pyStartserver

ERROR ", line 21

ERROR def send_to_skill(data: str) -> None:

ERROR ^

ERROR SyntaxError: invalid syntax

Virtuoso 6.1.7-64b is used.

[TM90]

Did you install the package with pip ?
Afterwards you use skillbridge path in the terminal to get the correct path ?

The load("your/path/python_server.il") in the virtuoso CIW
Afterwards run pyStartServer()

Which Python version are you using and please make sure that virtuoso runs the correct python interpreter.

The recommended approach is to setup a python virtual environment and then start Virtuoso in your started environment where the python alias maps to python >=3.6. See issue #59

Alternatively you can set the python interpreter as argument in pyStartServer(), as described in https://unihd-cag.github.io/skillbridge/usage/server.html

; use a custom interpreter path
pyStartServer ?python "python3.6"

[avlsi]

Thanks after updating the custom interpreter path, the command is returning 't' in CIW.
I am able to do pyDumpFunctionDefinitions "" also.
But the example to check skill function is not working when I am running from a linux terminal.

• code in check_skillbridge.py -
  from skillbridge import Workspace
  ws = Workspace.open('foo')
  cell_view = ws.ge.get_edit_cell_view()
  print(dir(cell_view))
  print(cell_view.b_box)

---

I get the following error
bash % python ../work/check_skillbridge.py
Traceback (most recent call last):
File "../work/check_skillbridge.py", line 6, in
ws = Workspace.open('foo')

File "/home/avlsi/local/lib/python3.6/site-packages/skillbridge/client/workspace.py", line 238, in open
raise RuntimeError("No server found. Is it running?") from None
RuntimeError: No server found. Is it running?

[TM90]

Try ws = Workspace.open() The argument is used to connect with an ID when you want to access multiple virtuoso instances on one machine .

To verify if the server is actually running run ps in your terminal. There should be the following processes:

• cdsServIpc
• python

[avlsi]

I think I understand the issue.
I am launching the virtuoso on a server. I need to figure out how to access the terminal where the processes are running.

[TM90]

Yes that sounds that this would be the issue.
I will close this issue.

If there are other problems feel free to open another one.

[Lshnn]

Hi, I'm facing exactly the same issue : raise RuntimeError("No server found. Is it running?") from None
RuntimeError: No server found. Is it running?

I would like to know how did you resolve it. Thanks

[nielsbuwen]

Did you run pyStartServer before connecting with Workspace.open()?

[Lshnn]

Yes I ran the pyStartServer on CIW before.

[nielsbuwen]

Can you share some more information please.

• Python version
• Skilbridge version
• The Cadence Tool you are using
• How you started the server
• The python code that contains the Workspace

[Lshnn]

Python version 3.8.2; skillbridge-1.5.0; and virtuoso 6.1.8
I started the server like described in the documentation : I ran the skillbridge path on a terminal then I loaded the path to "python_server.il" to in the CIW after that I ran the pyStartServer ?python "python3.8".
once I didi that, on a shell terminal I run the python3.8 and run the two python lines :
from skillbridge import Workspace
ws = Workspace.open()

[nielsbuwen]

Can you please verify that a file is created when you run pyStartServer. It is called /tmp/skill-server-default.sock.

[Lshnn]

I checked my /tmp and can't see this file

[nielsbuwen]

Maybe you don't have enough permissions to create and read files in /tmp .

Does the following work for you:

touch /tmp/skillbridge-test
cat /tmp/skillbridge-test
rm /tmp/skillbirdge-test

[Lshnn]

I can edit and save files in /tmp so I'm not sure to be the reason. those commands work fine in my side.

[nielsbuwen]

Unfortunately i'm running out of ideas, here :(

Did virtuoso create log files in the directory where you started it? If yes what is inside, if no i don't know what's the problem. Sorry

[Lshnn]

yes it created skillbridge_server.log file containing this :

02.08.2023 08:21:57 INFO starting server id=default log=INFO notify=False single=False timeout=None
02.08.2023 09:09:32 INFO starting server id=foo log=INFO notify=False single=False timeout=None
02.08.2023 09:32:44 INFO starting server id=default log=INFO notify=False single=False timeout=None
03.08.2023 02:30:41 INFO starting server id=default log=INFO notify=False single=False timeout=None

[jesseyu1984918]

Looks like python 3.11 will have the problem as well and I can't use 3.6 due to other package.

[TM90]

Looks like python 3.11 will have the problem as well and I can't use 3.6 due to other package.

All python versions above 3.8 should work. Can you describe what you tried so we can find the underlying issue here?