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Nastran Batch Mode Completion Status

Creator
Creator

Hi all,

I'm writing a small automation application which submits a job to nastran in batch mode. How can I know that the nastran has completed the job? Because once after that I have to copy the result file from the server ( nastran is in server ) to the local system to extract the results. So how to know nastran has completed?

14 REPLIES

Re: Nastran Batch Mode Completion Status

Siemens Phenom Siemens Phenom
Siemens Phenom

That is dependent the language you use to write the application and what method you use to launch the application. The method may have an option to wait for the command to complete before proceeding, or it may return the process ID of the nastran application.

Re: Nastran Batch Mode Completion Status

Creator
Creator

But if I know the jobid (( which is returned when the job is submitted ), is it possible to query the status?

Re: Nastran Batch Mode Completion Status

Siemens Phenom Siemens Phenom
Siemens Phenom

Again, this is dependent on the language you are using and the functions that particular language has for querying process ID's.

 

You have not provided enough information (what platform are you running on, what operating system, what language your application is written in, what function was used to launch the Nastran process, ....) to allow a more meaningful answer.

Re: Nastran Batch Mode Completion Status

Siemens Legend Siemens Legend
Siemens Legend

Hi Babu,

 

Maybe it helps to run Nastran in foreground.

If you use the Nastran commandline switch batch=no, Nastran will be submitted in foreground and your automation application will wait until the Nastran Solve is finished.

 

Just use the following commandline:

Nastran job.dat batch=no

 

Regards

Boris

Re: Nastran Batch Mode Completion Status

Creator
Creator

I may write my application in C++

and the server has the linux OS.

I'm not very clear how to do: 

My automation application (say App1) is written in C++ and it is in my desktop.

I have all the files ( .dat, .bdf and .set ) files in my desktop.

Now I would like to submit the job in a server ( HPC server) which has linux OS.

HPC system has a command like "runnas" which takes an xml file as a parameter. [ runnas -f <xmlfilename> ]

The xml file has all the attributes to run the job ( like job name,input files,number of cpu etc ).

So how to proceed?

Should I write another c++ application ( say App2 ) which launches nastran and wait for the nastran to complete. And App2 can be launched from main application (App1) which is running in my desktop.

Re: Nastran Batch Mode Completion Status

Siemens Legend Siemens Legend
Siemens Legend

Hi Babu,

 

When I understand you right you are submitting your Nastran job via a queueing system on the HPC. Runnas is your submit script. Do you know which queueing system is used?

Queueing systems have applications to check the status of your jobs. For example LSF has a tool called bjobs to check the status of the running jobs.

 

Boris

Re: Nastran Batch Mode Completion Status

Creator
Creator

Not sure about the queuing system. But there is perl script to query the status of the submitted job and when I checked the script, it internally uses fqstat to know job status.

Re: Nastran Batch Mode Completion Status

Siemens Legend Siemens Legend
Siemens Legend

Hi Babu,

 

It seems to be Grid Engine.

I assume the python script returns a list of all jobs with JobID and status. So if your Nastran job is finished, the JobId will not appear in the list anymore.

 

You could do the following:

 

You said you get the Job Id when you submit the job. After you submitted from the client, your 

local App1 can run the python script to get the list of running (and pending) jobs. Check if your jobId appears in the list. If so, rerun the python script after a certain timeout. If not, you are done.

 

Check with your IT for a good value for the timeout. Running the fqstat too often will increase server load (especially if you are not the only person running App1). Maybe you could use 60sec.

 

Boris

Re: Nastran Batch Mode Completion Status

Creator
Creator

Thanks for your info.

I'll try the same and update you on the same.