MATLAB并行计算箱无法启动

错误使用 parallel.internal.pool.AbstractInteractiveClient>iThrowWithCause (第 305 行)

Failed to initialize the interactive session.

出错 parallel.internal.pool.AbstractInteractiveClient/start (第 142 行)

iThrowWithCause( 'parallel:convenience:FailedToInitializeInteractiveSession', err );

出错 parallel.internal.pool.AbstractClusterPool>iStartClient (第 831 行)

spmdInitialized = client.start(sessionBuildFcn, sessionInfo, numWorkers, cluster, ...

出错 parallel.internal.pool.AbstractClusterPool.hBuildPool (第 585 行)

iStartClient(client, sessionInfo, forceSpmdEnabled, cluster, supportRestart, argsList);

出错 parallel.internal.types.ValidationStages>iOpenPoolForCluster (第 456 行)

aPool = parallel.internal.pool.AbstractClusterPool.hBuildPool('Cluster', cluster, 'NumWorkers', numWorkers);

出错 parallel.internal.types.ValidationStages>@()iOpenPoolForCluster(runInfo)

出错 parallel.internal.types.ValidationStages>iCallWithNoHotlinks (第 336 行)

[varargout{1:nargout}] = fcn();

出错 parallel.internal.types.ValidationStages>iRunParpoolStage (第 247 行)

[commandWindowOutput, aPool] = evalc(iWrapForEvalc(openPoolFcn));

出错 parallel.internal.types.ValidationStages/run (第 68 行)

[eventData, runInfo] = obj.RunFunction(obj, runInfo);

出错 parallel.internal.validator.Validator/runValidationSuite (第 191 行)

[eventData, stageRunInfo] = currentStage.run(stageRunInfo);

出错 parallel.internal.validator.Validator/validate (第 103 行)

status = obj.runValidationSuite(profileName, suite);

出错 parallel.internal.ui.AbstractValidationManager/validate (第 36 行)

obj.Validator.validate(profileName, validationSuite);

出错 parallel.internal.ui.ValidationManager.validateProfile (第 36 行)

parallel.internal.ui.ValidationManager.getOrCreateInstance().validate(profileName, suite);

原因:

错误使用 parallel.internal.pool.AbstractInteractiveClient>iThrowIfBadParallelJobStatus (第 426 行)

The interactive communicating job failed with no message.

Answer 1

[Kautuk Raj]

I reckon that you encountered an error while trying to initialize an interactive session in the Parallel Computing Toolbox, leading to a failure in starting the client for your parallel pool.

I suggest the following steps to troubleshooting the issue:

1. Check startup.m for any changes to the Java configuration and undo all such changes. You can refer to this MATLAB Answers post for details: https://www.mathworks.com/matlabcentral/answers/601714-why-is-startup-m-file-affecting-the-execution-of-parpool-command
2. Make sure you are using the same version of Java for both compilation and execution. The following MATLAB Answers post can be referred to for more details: https://www.mathworks.com/matlabcentral/answers/130359-how-do-i-change-the-java-virtual-machine-jvm-that-matlab-is-using-on-windows
3. Confirm that mex -setup is configured correctly.

I hope these steps will lead you to solving your issue.