Learning Forum

[mazab17]

Hi, I am running Fluent 19.1 on a cluster. I set up on my local computer to print the moment on the console as well save it in the output file (that I was doing on the version 16.2 and everything was fine) then I saved the Fluent (I did initialization before this set up) and saved the fluent and export .cas and .dat files and then run it on the cluster. But by running the moment was not printed on the console and no file was saved in my directory. Do you have any clue what is the problem? 

[Keyur Kanade]

Can you please give more information about how did you set up to print the moment on the console on your local computer? 

[Rob]

Can you check you're saving the files to the ./folder    as Fluent has a tendency to save full paths. Depending on your local machine & cluster it may be trying to save to a non-existent location. Another method is to run a short journal on the cluster once the case & data are read in to set the monitors saves. 

[seeta gunti]

Please check the path where fluent is saving the report definition files under Monitors --> report files.

Regards,

Seeta

[mazab17]

In the solution section, report definition, I defined the moment at the zone that I am looking for and moment axis. In the report file and plot, I added the moment and check the print to console box. I saved the project and export the .cas and .dat files. Then I uploaded in my directory in the cluster and submitted the job. It's running but nothing printed and no files that included the moment was saved. BTW, I have the professional version that is provided by my supervisor, not the student version. 

[mazab17]

Thank you very much. Fluent should save in my repository in the cluster, and nothing was saved could be the reason but where could I look for for the files in none of my directories there is saved files from Fluent. Do you have an example of a journal file to save monitors? 

[Rob]

I don't have an example journal, but can give pointers for you to write one. 

Click into the TUI window and press <Enter>. This will bring up the top level menu list, type solve and press enter. Press enter again for the next level list. In there you'll see monitors, so type that and keep following the commands. 

For your journal the line becomes

/solve/monitor/report-files   stuff....

To move back up  a level use q (lower case Q).

 

[mazab17]

thank you very much. Now, this is my journal file: 

file

rc turbine15_f.cas

rd turbine15.dat

file /autosave/data-frequency 10

q

/solve dual-time-iterate 10000 20

 

exit

 

I wiil add: 

/solve/monitor/report-files moment 

to this journal. 

 

[mazab17]

Even by using the script to set the monitors it is not saving or print on the console!!! 

[Keyur Kanade]

Can you please check Solving - Run Calculation - Advanced - Reporting interval? Set this interval to 1. 

 

[Rob]

As the monitors are already set up I think you just need to amend the file name in the case. As an aside, if you're running in batch mode there isn't a display to save so plotting won't do anything.   If you're not running batch, just open the case and have a look where the monitor thinks it's saving the images to. 

[mazab17]

Actually, I don't want the plots, just want the file and print on the console. I am running on the cluster (it's a supercomputer and I have a directory on that computer and should save my files in the director). It's reasonable that maybe Fluent couldn't find the root to save the file but how I can change the path in the set up to save it in my directory. The other issue is that why it's not printed on the console. For example: 

 

  iter  continuity  x-velocity  y-velocity  z-velocity           k       omega     time/iter

! 5190 solution is converged

  5190  2.2550e-06  1.5823e-06  4.4377e-07  2.8704e-06  2.6502e-04  2.0181e-04  0:08:13   20

! 5191 solution is converged

  5191  2.2621e-06  1.5823e-06  4.4364e-07  2.8704e-06  2.6493e-04  2.0175e-04  0:07:48   19

Flow time = 1.56542919s, time step = 3757

and no moment is printed here!!!

 

[mazab17]

I already set up to one. 

[Rob]

Can you check the report definition as it ought to work if the residual data is saved. I've screen grabbed a couple of panels that should show what's set: ignore the names/labels as they're from a dummy case I use. 

 

 

 

[mazab17]

Thank you for your time. Yes, I did exactly as you showed in the above case. As you mentioned, fluent maybe couldn't find the path to save the files as it's running on the cluster but why it's not printing? I have a .dat file that all of the information (iteration, convergence and ...) are printed that it actually plays the console role but the moment is not printed. I don't know exactly what was updated from 16.2 to 19.1 version because I have the moment in the 16.2 with the same procedure but in 19.2 I don't have them. Since the version was updated in school, I don't have access to 16.2 anymore and I need to get the result from 19.1. 

[DrAmine]

Are you writing a transcript file or does your job scheduler (if used) writes a transcript file.  Sorry I need to ask this as If you re running in batch and using print to console then either it will print everything into standard output (not really helpful on cluster) or into transcript (if set in Fluent or via Job scheduler)

[mazab17]

I set up in the Fluent to print on the console, unfortunately, I couldn't find an example script to print moment on the console command. I would appreciate if you could provide me the command to print the moment on the console in the script file. 

[DrAmine]

How are starting Fluent? Please copy paste the command you are using to start Fluent in batch?

In the below picture whenver you set "print to console" then  moment or moment coefficient are printed into Fluent console and into the transcript if any:

 

[mazab17]

Thank you very much Amine, I couldn't see your image it's damaged. I have a run script and I submit the run script to start the Fluent. the following is the command for the fluent. 

fluent 3ddp -t24 -ssh -pib -cnf=${PBS_NODEFILE} -mpi=pcmpi -g -i info.jou >case2.dat

 

[DrAmine]

I can see the picture, strange! In words: in Report Definition>Moment check if "Print to Console" is switched on.

 

Can you check the content of case2.dat if it does contain the required information or at least residuals? 

100% safe: in Yjournalurna "info.jou" write at the beginning /file/start-transcript mytrans and at almost endt before exiting /file/stop-transcript

[mazab17]

Yes, the print to console is on in the report definition. In my case2.dat I have the residuals for other variables: 

 iter  continuity  x-velocity  y-velocity  z-velocity           k       omega     time/iter

! 5426 solution is converged

 5426  2.1782e-06  1.5779e-06  4.1496e-07  2.8564e-06  2.4844e-04  1.8773e-04  0:08:13   20

 

[DrAmine]

Please paste some more lines the entire transient or two transients if possible

[mazab17]

Updating solution at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity           k       omega     time/iter

! 5534 solution is converged

  5534  2.1516e-06  1.5764e-06  4.0320e-07  2.8503e-06  2.4122e-04  1.8181e-04  0:08:13   20

! 5535 solution is converged

  5535  2.1534e-06  1.5764e-06  4.0309e-07  2.8502e-06  2.4113e-04  1.8176e-04  0:07:48   19

Flow time = 1.70876367s, time step = 4101

5899 more time steps

 

[mazab17]

And this is my journal file: 

file

rc turbine15_f.cas

rd turbine15.dat

file /autosave/data-frequency 10

q

/solve/monitors/Moment

/solve dual-time-iterate 10000 20

 

[DrAmine]

Please post a screenshot of Moment Report Definition. 

[DrAmine]

Just to highlight one thing: You are still using the old "Monitors" to get the moments. They would actually give you normaly what you want but I recommend using the new Report DEfinitions. So Please just create a new Report Definition>Moment then give the necessary input and do not forget to write in a file using local paths and print to console.

[mazab17]

I added that line after I tried everything and I didn't get the moment. Please attend to the screenshots of the report definition and monitor:

[DrAmine]

1/In R19.2 there is an option to set "Print to console" under Moment Report definition.

2/Please check if you can see the moment written in the console if you are running interactively (with GUI)

3/There is another to let you have the information of the moment every transient: Create for example an output parameter for the moment and then add a calculation activity every time step  (or every N time steps) with /define/parameters/output-parameters/print-to-console yournameofparameter.

[mazab17]

Unfortunately, I don't have the access to 19.2 version since school provides 19.1 and as you can see there is no such an option in 19.1 and the mesh is very huge and I couldn't run it on my local computer to check if it's printed in GUI (33 million elements). Do you mean I add " /define/parameters/output-parameters/print-to-console moment" to the Journal file? 

 

Thank you very much

[DrAmine]

No add it as a Calculation Activity after you created an output parameter for the moment. Regarding the issue with large cell count: Just create a dummy example to check the issue with the print to console which you can then easily run on your local PC and to get familiar with TUI commands and Fluent in genereal!

[mazab17]

Hello, 

In the calculation Activity, there is no definition of parameters. You mean that I write a macro for that 

[DrAmine]

No: on the creation of the Report Definition just Click on Create Output Parameter.

Do not forget to test on your local machine for a dummy test the issue with the print to console interactively.

[reeaazz]

"Hi, I am running Fluent 19.1 on a cluster. I set up on my local computer to print the moment on the console as well save it in the output file (that I was doing on the version 16.2 and everything was fine) then I saved the Fluent (I did initialization before this set up) and saved the fluent and export .cas and .dat files and then run it on the cluster. But by running the moment was not printed on the console and no file was saved in my directory. Do you have any clue what is the problem?"

 

Hi, did you find the solution for your problem? Because i am facing the similar problem since I want to retrieve a report files for moments, mass-flow-rate etc. from the cluster. My journal file that i submit with the job allows to run the calculation for certain iterations for certain no. of time steps and writes the case and data file. However, it does not create a report file for the monitors i did setup on my case file, normally it creates the report file if i run the case file in fluent on my desktop but, it does not do the same in cluster. So, i was wondering if you could be some help for me. 

[mazab17]

Hi, 

Regarding to the output file such as moment or other parameters I guess the software is looking to the default path (the path at the case file) to save files but as it couldn't file then we couldn't get the output files. I changed the cluster and asked the person who is in charged to take a look to the directory that software is installed and files were there. About the calculation for some iteration, if you could able to attach your journal and script file I can take a look. 

 

 

[reeaazz]

what about printing it to console? did that work for you at the end? because in my case file i did ticked the option to enable to print the monitors in console but that did not work as well. Also the cluster did not give me any file for monitors in the default path where the data file and case file was returned from the cluster, in addition to that i also tried to change the file path in the case file by pasting the file path of my cluster account where everything is saved but still no chance.  Below is journal and script file.

Journal file:

; Read case file

rc "/home/lyceum/arr1g15/IP_New/fan-housing-Setup-Output.cas.gz"

; Initialize the solution

/solve/initialize/hyb-initialization

; Set time step

/solve/set/time-step 0.000033

; No. of time steps

/solve/dual-time-iterate 1800 40

; Write case file

wc fan-housing-Setup-Output-%i.gz

; Write data file (compressed, iteration number included in file name)

wd fan-housing-Setup-Output-%i.gz

; Exit FLUENT

exit

yes

 

 

[reeaazz]

i cant post the script file for some reason

[reeaazz]

 

 

#PBS -l walltime=24:00:00

#PBS -l mem=16g

#Change to directory from which job was submitted

cd $PBS_O_WORKDIR

 

# set number of processors to run on (using list of node names in file $PBS_NODEFILE)

nprocs=`wc -l $PBS_NODEFILE | awk '{ print $1 }'`

 

# load fluent module so that we find the fluent command

module load fluent

# Run default version of Fluent in 2d mode in parallel over $nprocs processors

# Fluent commands are in file elbow.jou, output messages go to output_file

 

fluent 2ddp -t$nprocs -cnf=$PBS_NODEFILE -g -i fan.jou > output_file_$$

[reeaazz]

actually thats the acript file above