Check availability of floating license
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Patrick Schmale
le 21 Avr 2017
Commenté : Davide Allaio
le 14 Mar 2023
We are using MATLAB/Simulink floating license for continous integration. We've got the problem that MATLAB/Simulink ends up with an license checkout failed error, if no floating license is available. Is there a way to check if a license is a available before starting MATLAB/Simulink?
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Antonios Pournaras
le 27 Juil 2018
Here is a python function that prints how many licences are available and returns in this case. If there are no licenses available it tries again. The function calls the system command "lmutil" which is a license administration utility installed along with MATLAB. It writes the output to a file 'mat_lic.info'. Parses this file until it finds a line where there is information about the licence. Always check this file because its format may change through different MATLAB versions and the script needs modification. It works for MATLAB R2014b:
import subprocess
def matlab_license():
while True:
# substitute port and server with correct values
# lmutil may not be in path. Put the whole path instead.
lic_server=['lmutil','lmstat','-a','-c','port@server']
cmdout = subprocess.check_output(lic_server)
F=open('mat_lic.info','w')
F.write(cmdout)
F.close()
F=open('mat_lic.info','r')
for line in F:
if 'Users of MATLAB' in line:
text = line
break
F.close()
num=[]
for word in text.split():
if word.isdigit():
num.append(word)
lic_avail = max(num) - min(num)
if lic_avail < 2:
print "Only %d licence(s) found. Trying again." % lic_avail
else:
print "Found %d licenses availabe." % lic_avail
return
2 commentaires
Patrick Schmale
le 6 Août 2018
Modifié(e) : Patrick Schmale
le 6 Août 2018
Davide Allaio
le 14 Mar 2023
Hello, I know it has been 5 years already, but could someone explain to me how to modify the lic_server string correctly in order for the function to work? Thank you very much!!
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