Version Problem
Answered
I had Installed Gurobi 8.0.1 on my Mac (academic). My license expired last moth, so I requested today another license. I downloaded and installed version 8.1.1, after that I ran the grb and I ran an example on Anaconda to check if the license were validated, it worked, but when I run the command Gurobi.sh on a terminal I saw that I had version 8.0.1.
I went to Community on the Gurobi site to see if someone has the same issue, and I found one of the post as "Wrong version installed", the recommendation was that the user must delete all the older version (I had three versions, 702, 751 and 801), I deleted all the three and keeped the 811, but when I ran gurobi.sh on a terminal (or clicked on Gurobi icon) I had this:
Last login: Tue Sep 24 23:43:31 on ttys000
exec gurobi.sh
MacBook-Pro-de-Fernando:~ drfernando$ exec gurobi.sh
Python 2.7.10 (default, Feb 22 2019, 21:55:15)
[GCC 4.2.1 Compatible Apple LLVM 10.0.1 (clang-1001.0.37.14)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
Could not open PYTHONSTARTUP
IOError: [Errno 2] No such file or directory: '/Library/gurobi801/mac64/lib/gurobi.py'
What it surprises me is when I run an exemple on anaconda(Spyder) the optimizer works. Finally, I don't know what version I have.
Regards,
Fernando
i
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Official comment
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It looks like your default Python installation may not be the Anaconda Python, and your default Python has not been updated with Gurobi 8.1.1. When you type
which python
at a Terminal command line what do you get?
If from that same command line, you change to the /Library/gurobi811/mac64/ directory and run
python setup.py install
what happens?
Thanks,
Gwyneth
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Hi Gwyneth,
When I type "which python" I got:
Last login: Wed Sep 25 00:02:53 on ttys000
MacBook-Pro-de-Fernando:~ drfernando$ which python
/anaconda3/bin/python
And when I change to the directory /Library/gurobi811/mac64/ and type "
python setup.py install
I got:
MacBook-Pro-de-Fernando:mac64 drfernando$ python setup.py install
running install
running build
running build_py
creating build
creating build/lib
creating build/lib/gurobipy
copying lib/python3.6/gurobipy/__init__.py -> build/lib/gurobipy
copying lib/python3.6/gurobipy/gurobipy.so -> build/lib/gurobipy
running install_lib
creating /anaconda3/lib/python3.6/site-packages/gurobipy
copying build/lib/gurobipy/gurobipy.so -> /anaconda3/lib/python3.6/site-packages/gurobipy
copying build/lib/gurobipy/__init__.py -> /anaconda3/lib/python3.6/site-packages/gurobipy
byte-compiling /anaconda3/lib/python3.6/site-packages/gurobipy/__init__.py to __init__.cpython-36.pyc
running install_egg_info
Writing /anaconda3/lib/python3.6/site-packages/gurobipy-8.1.1-py3.6.egg-info
removing /Library/gurobi811/mac64/build
MacBook-Pro-de-Fernando:mac64 drfernando$
Thanks,
Fernando
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Thanks for trying that. What do you see when you run
echo $PYTHONSTARTUP
It looks like this might be an environment variable that has not been updated for some reason.
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Nothing happens:
MacBook-Pro-de-Fernando:mac64 drfernando$ echo $PYTHONSTARTUP
MacBook-Pro-de-Fernando:mac64 drfernando$ echo $PYTHONSTARTUP
MacBook-Pro-de-Fernando:mac64 drfernando$
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Thanks for sending that. I think I see the problem now. Can you try
which gurobi.sh
and then send the contents of that file?
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Here is:
MacBook-Pro-de-Fernando:mac64 drfernando$ which gurobi.sh
/anaconda3/bin/gurobi.sh
MacBook-Pro-de-Fernando:mac64 drfernando$
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Can you send the contents of that file? I suspect there is a PYTHONSTARTUP variable in it that points to the wrong directory for Gurobi.
Also, are you sure that the example you ran in Acaconda used Gurobi 8.1.1?
Thanks.
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The content is:
#!/bin/sh
export PYTHONPATH=/Library/gurobi801/mac64/lib
export PYTHONSTARTUP=/Library/gurobi801/mac64/lib/gurobi.py/usr/bin/python2.7 "$@"
I´m not sure if I'm running 801 or 811. I've never had this problem before. But it seems that Gurobi is faster. Before the installation of Gurobi 811, I found the response in 300 seconds, now the solution is found in just 40 seconds.
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Ok, so I see that gurobi.sh is still pointing to the 8.0.1 installation.
Please edit this file to point to gurobi811 instead of gurobi801, and let me know if that works.
Thanks.
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Thanks so much Gwyneth, it worked.
So the issue is solved.
Best regards,
Fernando
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Hi Fernando -
Glad to hear it! Thanks for letting me know. I have never seen this issue before!
Happy gurobi-ing!
Gwyneth
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I'm using Gurobi Solver since 2016 (Gurobi 6) and I´ve never had this problem. Thanks again for your help.
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