Thread Subject: remote calculation out of running

I am running my codes on a remote cluster, my submit script like this

clusterHost = '****';
remoteDataLocation = '/home/me/Matlab';
sched = findResource('scheduler', 'type', 'generic');

set(sched, 'DataLocation', '/home/me/Matlab/jobData');
set(sched, 'ClusterMatlabRoot', '/share/apps/mtlb');
set(sched, 'HasSharedFilesystem', false);
set(sched, 'ClusterOsType', 'unix');
set(sched, 'GetJobStateFcn', @sgeGetJobState);
set(sched, 'DestroyJobFcn', @sgeDestroyJob);

set(sched, 'ParallelSubmitFcn', {@sgeNonSharedParallelSubmitFcn, clusterHost, remoteDataLocation});

pjob = createMatlabPoolJob(sched);
set(pjob, 'FileDependencies', {'mycode.m'});

set(pjob, 'MaximumNumberOfWorkers', 12);
set(pjob, 'MinimumNumberOfWorkers', 12);
t = createTask(pjob,@mycode,1);

submit(pjob);

After I submit my job, I can qstat my job on cluster and it says my job is running. I used get(pjob) on client and it says my job is running.

After a long time, when I went to check my job, I found that I couldn't find anything when I typed qstat, the running job has gone. but get(pjob) on client still said my job is running. Why did this happen?

If I change my code to small one (only set parfor loop to small), everything worked well and I got the results. This small one only needs several minutes to run. So it worked well.

Thank you so much.