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Gurobi solver not working in Azure Cloud Function

Ongoing
Yassin Alhafiz
  • Gurobi-versary
  • First Comment
  • First Question
Im deploying a Toy Model to Azure Function Apps. I get the following errors in the log when making a request to the durable function. 
 
I have checked that the license file is in the correct location and being accessed, and made sure that all modules are installed.
 
Has anyone encountered this issue?
 
 
2024-10-21T21:04:21Z [Information] Installed local modules: aiohttp 3.10.10
2024-10-21T21:04:21Z [Information] Installed local modules: attrs 24.2.0
2024-10-21T21:04:21Z [Information] Installed local modules: azure-functions 1.21.3
2024-10-21T21:04:21Z [Information] Installed local modules: azure-functions-durable 1.2.9
2024-10-21T21:04:21Z [Information] Installed local modules: certifi 2024.8.30
2024-10-21T21:04:21Z [Information] Installed local modules: charset-normalizer 3.4.0
2024-10-21T21:04:21Z [Information] Installed local modules: cloudpickle 3.0.0
2024-10-21T21:04:21Z [Information] Installed local modules: frozenlist 1.4.1
2024-10-21T21:04:21Z [Information] Installed local modules: furl 2.1.3
2024-10-21T21:04:21Z [Information] Installed local modules: gurobipy 11.0.0
2024-10-21T21:04:21Z [Information] Installed local modules: idna 3.10
2024-10-21T21:04:21Z [Information] Installed local modules: multidict 6.1.0
2024-10-21T21:04:21Z [Information] Installed local modules: numpy 2.1.2
2024-10-21T21:04:21Z [Information] Installed local modules: orderedmultidict 1.0.1
2024-10-21T21:04:21Z [Information] Installed local modules: ply 3.11
2024-10-21T21:04:21Z [Information] Installed local modules: propcache 0.2.0
2024-10-21T21:04:21Z [Information] Installed local modules: python-dateutil 2.9.0.post0
2024-10-21T21:04:21Z [Information] Installed local modules: requests 2.32.3
2024-10-21T21:04:21Z [Information] Installed local modules: six 1.16.0
2024-10-21T21:04:21Z [Information] Installed local modules: urllib3 2.2.3
2024-10-21T21:04:21Z [Information] Installed local modules: yarl 1.15.5
2024-10-21T21:04:21Z [Information] Installed local modules: azure-functions-worker 4.28.1
2024-10-21T21:04:21Z [Information] Installed local modules: azurefunctions-extensions-base 1.0.0a1
2024-10-21T21:04:21Z [Information] Installed local modules: grpcio 1.54.3
2024-10-21T21:04:21Z [Information] Installed local modules: aiosignal 1.3.1
2024-10-21T21:04:21Z [Information] Installed local modules: setuptools 69.5.1
2024-10-21T21:04:21Z [Information] Installed local modules: pip 24.0
2024-10-21T21:04:21Z [Information] Installed local modules: wheel 0.43.0
2024-10-21T21:04:21Z [Information] Installed local modules: aiohappyeyeballs 2.4.3
2024-10-21T21:04:21Z [Information] Installed local modules: protobuf 4.22.5
2024-10-21T21:04:21Z [Information] Installed local modules: Pyomo 6.8.0
2024-10-21T21:04:21Z [Information] c2fbee05d0cb4755b74ca64771ebd41b: Updated Instances table and set the runtime status to 'Running'
2024-10-21T21:04:21Z [Information] c2fbee05d0cb4755b74ca64771ebd41b: Deleting [ExecutionStarted] message from funchatchmodelapicasandbox-control-03
2024-10-21T21:04:21Z [Verbose] TaskOrchestrationDispatcher-3e147f4404da44babf6aae920098c38f-0: Finished processing work-item 'c2fbee05d0cb4755b74ca64771ebd41b'
2024-10-21T21:04:21Z [Error] Solver (gurobi) returned non-zero return code (1)
2024-10-21T21:04:21Z [Error] Solver log: Traceback (most recent call last): File "<stdin>", line 2, in <module> ModuleNotFoundError: No module named 'gurobipy'
2024-10-21T21:04:21Z [Error] Executed 'Functions.call_ToyModel' (Failed, Id=b9c6e6b7-fd47-445a-9d67-b627c787ebc5, Duration=139ms)
2024-10-21T21:04:21Z [Error] c2fbee05d0cb4755b74ca64771ebd41b: Function 'call_ToyModel (Activity)' failed with an error. Reason: System.Exception: ApplicationError: Solver (gurobi) did not exit normally ---> Microsoft.Azure.WebJobs.Script.Workers.Rpc.RpcException: Result: Failure Exception: ApplicationError: Solver (gurobi) did not exit normally Stack: File "/azure-functions-host/workers/python/3.11/LINUX/X64/azure_functions_worker/dispatcher.py", line 602, in _handle__invocation_request await self._run_async_func(fi_context, fi.func, args) File "/azure-functions-host/workers/python/3.11/LINUX/X64/azure_functions_worker/dispatcher.py", line 939, in _run_async_func return await ExtensionManager.get_async_invocation_wrapper( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/azure-functions-host/workers/python/3.11/LINUX/X64/azure_functions_worker/extension.py", line 147, in get_async_invocation_wrapper result = await function(**args) ^^^^^^^^^^^^^^^^^^^^^^ File "/home/site/wwwroot/function_app.py", line 134, in call_ToyModel solver.solve(model) File "/home/site/wwwroot/.python_packages/lib/site-packages/pyomo/opt/base/solvers.py", line 628, in solve raise ApplicationError("Solver (%s) did not exit normally" % self.name) at Microsoft.Azure.WebJobs.Script.Description.WorkerFunctionInvoker.InvokeCore(Object[] parameters, FunctionInvocationContext context) in /src/azure-functions-host/src/WebJobs.Script/Description/Workers/WorkerFunctionInvoker.cs:line 101 at Microsoft.Azure.WebJobs.Script.Description.FunctionInvokerBase.Invoke(Object[] parameters) in /src/azure-functions-host/src/WebJobs.Script/Description/FunctionInvokerBase.cs:line 82 at Microsoft.Azure.WebJobs.Script.Description.FunctionGenerator.Coerce[T](Task`1 src) in /src/azure-functions-host/src/WebJobs.Script/Description/FunctionGenerator.cs:line 225 at Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker`2.InvokeAsync(Object instance, Object[] arguments) in D:\a\_work\1\s\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionInvoker.cs:line 53 at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.InvokeWithTimeoutAsync(IFunctionInvoker invoker, ParameterHelper parameterHelper, CancellationTokenSource timeoutTokenSource, CancellationTokenSource functionCancellationTokenSource, Boolean throwOnTimeout, TimeSpan timerInterval, IFunctionInstance instance) in D:\a\_work\1\s\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs:line 581 at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.ExecuteWithWatchersAsync(IFunctionInstanceEx instance, ParameterHelper parameterHelper, ILogger logger, CancellationTokenSource functionCancellationTokenSource) in D:\a\_work\1\s\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs:line 527 at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.ExecuteWithLoggingAsync(IFunctionInstanceEx instance, FunctionStartedMessage message, FunctionInstanceLogEntry instanceLogEntry, ParameterHelper parameterHelper, ILogger logger, CancellationToken cancellationToken) in D:\a\_work\1\s\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs:line 306 --- End of inner exception stack trace ---. IsReplay: False. State: Failed. RuntimeStatus: Failed. HubName: funchatchmodelapicasandbox. AppName: func-hatch-modelapi-ca-sandbox. SlotName: Production. ExtensionVersion: 2.13.2. SequenceNumber: 7. TaskEventId: 0

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6 comments

Date Votes
  • Official comment
    Simranjit Kaur
    • Gurobi Staff
    Edited

    This post is more than two years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum, or try Gurobot, our chatbot interface offering instant, expert-level support.

  • Marika Karbstein
    • Gurobi Staff

    I have no experience with Azure Function Apps. But the output shows

    ModuleNotFoundError: No module named 'gurobipy'

    Did you make sure that gurobipy is installed and can be found?

    0
  • Riley Clement
    • Gurobi Staff

    Additional to Marika's comment, can you see gurobipy as a subfolder of the following directory?

    /home/site/wwwroot/.python_packages/lib/site-packages/

     

    0
  • Yassin Alhafiz
    • Gurobi-versary
    • First Comment
    • First Question

    Hey,

    Yes I made sure gurobipy is installed, I have outputted installed packages above and can see that gurobipy is listed. I have also navigated to that directory and I see the gurobipy subfolder. 

    0
  • Riley Clement
    • Gurobi Staff

    A similar issue is reported in this Stack Overflow post.
    https://stackoverflow.com/questions/72215655/local-module-not-found-in-azure-function

    Can you see if the selected answer there helps?

    0
  • Yassin Alhafiz
    • Gurobi-versary
    • First Comment
    • First Question

    Hey,

    The issue was being caused by the solver option "tee=True" being enabled as well as having a log file defined. It seems Azure is a read only environment and the log streams from the Gurobi server is causing an issue. 

    Disabling the logs resolved the issue but now cannot retrieve logs. Is there a Gurobi API to get logs by run ID directly from the server?

    0

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