parpool failed to start

18 views (last 30 days)
Chad Greene
Chad Greene on 7 Sep 2022
Commented: Chad Greene on 8 Sep 2022
I'm trying to start a parallel pool in Matlab 2020b, but the pool repeatedly fails to start. Can anyone offer any guidance? Here are the messages I get:
VALIDATION REPORT
Profile: LocalProfile1
Scheduler Type: Local
Stage: Cluster connection test (parcluster)
Status: Passed
Start Time: Wed Sep 07 15:08:24 PDT 2022
Finish Time: Wed Sep 07 15:08:24 PDT 2022
Running Duration: 0 min 0 sec
Description:
Error Report:
Command Line Output:
Debug Log:
Stage: Job test (createJob)
Status: Passed
Start Time: Wed Sep 07 15:08:24 PDT 2022
Finish Time: Wed Sep 07 15:08:59 PDT 2022
Running Duration: 0 min 35 sec
Description:
Error Report:
Command Line Output:
Debug Log:
Stage: SPMD job test (createCommunicatingJob)
Status: Passed
Start Time: Wed Sep 07 15:08:59 PDT 2022
Finish Time: Wed Sep 07 15:10:11 PDT 2022
Running Duration: 1 min 12 sec
Description: Job ran with 64 workers.
Error Report:
Command Line Output:
Debug Log:
Stage: Pool job test (createCommunicatingJob)
Status: Passed
Start Time: Wed Sep 07 15:10:11 PDT 2022
Finish Time: Wed Sep 07 15:10:58 PDT 2022
Running Duration: 0 min 47 sec
Description: Job ran with 64 workers.
Error Report:
Command Line Output:
Debug Log:
Stage: Parallel pool test (parpool)
Status: Failed
Start Time: Wed Sep 07 15:10:58 PDT 2022
Finish Time: Wed Sep 07 15:16:02 PDT 2022
Running Duration: 5 min 5 sec
Description: Failed to initialize the interactive session.
Error Report: Failed to initialize the interactive session.
Caused by:
Error using parallel.internal.pool.InteractiveClient>iThrowIfBadParallelJobStatus (line 789)
The interactive communicating job failed with no message.
Command Line Output:
Debug Log:
Error using parpool (line 139)
Parallel pool failed to start with the following error. For more detailed information, validate the profile 'LocalProfile1' in the Cluster
Profile Manager.
Error using parallel.internal.pool.InteractiveClient>iThrowWithCause (line 678)
Failed to initialize the interactive session.
Error in parallel.internal.pool.InteractiveClient/start (line 376)
iThrowWithCause( 'parallel:convenience:FailedToInitializeInteractiveSession', err );
Error in parallel.internal.pool.AbstractClusterPool>iStartClient (line 826)
spmdInitialized = client.start(poolType , numWorkers, cluster, ...
Error in parallel.internal.pool.AbstractClusterPool.hBuildPool (line 596)
iStartClient(client, 'pool', cluster, guiMode, supportRestart, argsList);
Error in parallel.internal.types.ValidationStages>iOpenPoolForCluster (line 399)
aPool = parallel.internal.pool.AbstractClusterPool.hBuildPool('Cluster', cluster, 'NumWorkers', numWorkers);
Error in parallel.internal.types.ValidationStages>@()iOpenPoolForCluster(runInfo)
Error in parallel.internal.types.ValidationStages>iCallWithNoHotlinks (line 311)
[varargout{1:nargout}] = fcn();
Error in parallel.internal.types.ValidationStages>iRunParpoolStage (line 226)
[commandWindowOutput, aPool] = evalc(iWrapForEvalc(openPoolFcn));
Error in parallel.internal.types.ValidationStages/run (line 55)
[eventData, runInfo] = obj.RunFunction(obj, runInfo);
Error in parallel.internal.validator.Validator/runValidationSuite (line 191)
[eventData, stageRunInfo] = currentStage.run(stageRunInfo);
Error in parallel.internal.validator.Validator/validate (line 103)
status = obj.runValidationSuite(profileName, suite);
Error in parallel.internal.ui.AbstractValidationManager/validate (line 36)
obj.Validator.validate(profileName, validationSuite);
Error in parallel.internal.ui.ValidationManager.validateProfile (line 36)
parallel.internal.ui.ValidationManager.getOrCreateInstance().validate(profileName, suite);
Caused by:
Error using parallel.internal.pool.InteractiveClient>iThrowIfBadParallelJobStatus (line 789)
The interactive communicating job failed with no message.
  4 Comments
Raymond Norris
Raymond Norris on 8 Sep 2022
Let's try one thing to get some more diagnostics and then turn this over to Techinical Support (support@mathworks.com).
pctconfig('preservejobs',true);
local = parcluster("local");
pool = local.parpool(64);
<... wait for error ...>
local.getDebugLog(local.Jobs(end))
It would also be interesting to see if you have issues with <64 workers (i.e., try 32 and/or 48 workers).
Chad Greene
Chad Greene on 8 Sep 2022
Hmm... the output message is empty, because once again "the interactive communicating job failed with no message".
I've tried with 64, 12, and 8 workers.
>> local = parcluster("local");
pool = local.parpool(64);
Starting parallel pool (parpool) using the 'local' profile ...
Error using parallel.Cluster/parpool (line 86)
Parallel pool failed to start with the following error. For more detailed information, validate the
profile 'local' in the Cluster Profile Manager.
Caused by:
Error using parallel.internal.pool.InteractiveClient>iThrowWithCause (line 678)
Failed to initialize the interactive session.
Error using parallel.internal.pool.InteractiveClient>iThrowIfBadParallelJobStatus (line 789)
The interactive communicating job failed with no message.
>> local.getDebugLog(local.Jobs(end))
LOG FILE OUTPUT:
>>

Sign in to comment.

Answers (0)

Categories

Find more on Parallel Computing Fundamentals in Help Center and File Exchange

Tags

Products


Release

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!