UDF: "unable to find rpvar" when closing FLUENT and opening it up again

Jordaan6 · June 11, 2019, 04:11

Hello guys,

I have defined schemer variables by using rp-var-define in the TUI. I access these variables in my udf using RP_Get_... and everything works great. but as soon as I close fluent and open it up again through Workbench, the UDF returns "unable to find rpvar". Even though in the TUI when I use rpgetvar it returns the correct value.

Any thoughts??

Jordaan6 · June 12, 2019, 05:35

Anyone have any ideas?

Jordaan6 · June 12, 2019, 05:58

I think the problem is due to the fact that I am solving in parallel and with the reboot of FLUENT the current rpvars are distributed to different nodes or something like that. I'm not very sure nor have much experience with this type of problem.

AlexanderZ · June 13, 2019, 02:50

how do you save your case?
rpvars are stored on host in case of parallel computation

best regards

Jordaan6 · June 13, 2019, 03:50

Quote:

Originally Posted by AlexanderZ

how do you save your case?
rpvars are stored on host in case of parallel computation

best regards

Hi AlexanderZ,

I save it by simply exiting Fluent to Workbench. Should I be saving it another way?

best regards,

AlexanderZ · June 13, 2019, 03:54

try following:
define your rpvars
save case file
close/open
read case file

best regards

LuckyTran · June 13, 2019, 11:36

Quote:

Originally Posted by Jordaan6

Hi AlexanderZ,

I save it by simply exiting Fluent to Workbench. Should I be saving it another way?

best regards,

but do you save the case when you exit Fluent? Sorry, gotta make sure.

either you are not saving the scheme variable (please make sure you're saving your cases when you exit) or the scheme variable is not being saved. If the latter, then you need to define it whenever you launch.

Cfdjunior · April 17, 2024, 20:15

Were you able to get your solution ? Currently I am facing the same issue . Howwever in my case , I am running using multiple processors(Using 20 processors ) to run the simulation and also running multiple design points.

June 11, 2019, 04:11	UDF: "unable to find rpvar" when closing FLUENT and opening it up again	#1
Jordaan6 New Member Haimi Join Date: Jan 2019 Posts: 4 Rep Power: 7	Hello guys, I have defined schemer variables by using rp-var-define in the TUI. I access these variables in my udf using RP_Get_... and everything works great. but as soon as I close fluent and open it up again through Workbench, the UDF returns "unable to find rpvar". Even though in the TUI when I use rpgetvar it returns the correct value. Any thoughts??

June 12, 2019, 05:35	Still no luck	#2
Jordaan6 New Member Haimi Join Date: Jan 2019 Posts: 4 Rep Power: 7	Anyone have any ideas?

June 12, 2019, 05:58	Parallel solving suspicion	#3
Jordaan6 New Member Haimi Join Date: Jan 2019 Posts: 4 Rep Power: 7	I think the problem is due to the fact that I am solving in parallel and with the reboot of FLUENT the current rpvars are distributed to different nodes or something like that. I'm not very sure nor have much experience with this type of problem.

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June 13, 2019, 02:50		#4
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	how do you save your case? rpvars are stored on host in case of parallel computation best regards

June 13, 2019, 03:54		#6
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	try following: define your rpvars save case file close/open read case file best regards

April 17, 2024, 20:15		#8
Cfdjunior New Member Join Date: Dec 2019 Posts: 17 Rep Power: 7	Were you able to get your solution ? Currently I am facing the same issue . Howwever in my case , I am running using multiple processors(Using 20 processors ) to run the simulation and also running multiple design points.