CFD Online Discussion Forums - saving grafics in batch-mode

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saving grafics in batch-mode

Hello forum

I already read some other threads here and elsewhere how to save e.g. velocity-plots while making a simulation without gui.
So I tried:

"-g" => errors, because of disabled grafics
"-gu -driver null" => no errors but no saved grafics
"-gu -driver x11" => no errors, grafical windows were shown for every timestep/iteration but again no pictures are saved
"-gu -driver opengl" => same like with x11

in my .scm-file including the scheme-commands I defined the executing commands for opening a window, setting the right view and taking a hardcopy after each timestep

Im doing parallel job on a linux workstation

I guess its not possible to save grafics while working in batch-mode.

Any Ideas would be highly appreciated!

Greetings

Hi Robert,

all I can say is that running fluent in the background using -gu -driver null and taking hardcopies at several timesteps works for me on a linux-cluster. I had to play around a little bit with my journal file to get all scheme commands working properly, maybe you should post your scheme-file and i will have a look at it.

cheers

Hi coglione, thx for your help.

Code:

/display/set/picture/color-mode color

/display/set/picture/driver png

/display/set/picture/x-resolution 1600

/display/set/picture/y-resolution 1200



/solve/execute-commands/add-edit com1 1 "time-step" "/display/open 9"

/solve/execute-commands/add-edit com2 1 "time-step" "/display/contour mixture velocity-magnitude"

/solve/execute-commands/add-edit com3 1 "time-step" "/display/views/camera/position 0 0 0"

/solve/execute-commands/add-edit com3 1 "time-step" "/display/views/default-view"

/solve/execute-commands/add-edit com4 1 "time-step" "/display/views/camera/zoom 5"

/solve/execute-commands/add-edit com5 1 "time-step" "/display/views/camera/target 24 5 -2.5"

/solve/execute-commands/add-edit com6 1 "time-step" "/display/hardcopy  vel_%t.png"

Im running following command in the console:

./fluent 3ddp -g -t6 < /home/.../batch.scm > /home/.../out.dat 2> /home/.../out.error -ssh
# or the "-gu -driver null"

An excerpt of the batch-file is postet above, but I dont think there are faults in the commands, because I tried all of them in the text user interface in FLUENT

# edit: im working on a linux-cluster, too
# http://www.cfd-online.com/Wiki/Fluen...of_a_window.3F

greetings

Hi Robert,
i see you already work with Ansys12. I'm still on 6.3 and therefor not sure if there have been some changes regarding your topic. However, it is actually not a good idea to open an window with /display/open if you are in background mode and graphics driver is explicitly set to null. display/set is what i use, maybe you should give it a try.
cheers

Hi

So you mean "/display/set-window 9" ?
Its not working as well.

I just made the most simple case-file I can imagine, the elbow-file from the first tutorial

Code:

rc /home/.../elbow1.cas

/display/set/picture/driver png

/solve/initialize/initialize-flow

it 5

/display/set-window 9

/display/contour velocity-magnitude

0

2

/display/hardcopy vel.png

exit

yes

The error is following:

================================================== ============================
Stack backtrace generated for process id 9140 on signal 11 :
Please include this information with any bug report you file on this issue!
================================================== ============================

Error: Cortex received a fatal signal (SEGMENTATION VIOLATION).
Error Object: ()

thx for ur help