define_on_demand being executed twice?

jhz · January 25, 2021, 14:48

Hello,

I am using the define_on_demand macro for loading csv files into Fluent. After compiling the UDF and executing the define_on_demand macro manually, it appears to work successfully. However, using Message() to verify files are being read correctly always shows duplicate outputs, indicating the macro is somehow being run twice.

Testing with a very simple define_on_demand macro without file reading and just printing a message results in the same duplicate output. Why does this happen?

Thanks

AlexanderZ · January 25, 2021, 21:37

that's because fluent is running in parallel regime
so, probably, you have message from node_0 and host

jhz · January 26, 2021, 12:49

That makes sense - thank you!

January 25, 2021, 14:48	define_on_demand being executed twice?	#1
jhz New Member Join Date: Dec 2020 Posts: 19 Rep Power: 5	Hello, I am using the define_on_demand macro for loading csv files into Fluent. After compiling the UDF and executing the define_on_demand macro manually, it appears to work successfully. However, using Message() to verify files are being read correctly always shows duplicate outputs, indicating the macro is somehow being run twice. Testing with a very simple define_on_demand macro without file reading and just printing a message results in the same duplicate output. Why does this happen? Thanks

January 25, 2021, 21:37		#2
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	that's because fluent is running in parallel regime so, probably, you have message from node_0 and host dfsg250 and jhz like this. __________________ best regards ****************************** press LIKE if this message was helpful

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to calculate the number of if conditions executed in a fluent udf?	Shubhamp	Fluent UDF and Scheme Programming	56	January 23, 2020 18:19
[General] Paraview script executed by SGE grid engine	iv_sc	ParaView	0	December 10, 2015 10:22
code is being executed more than once per time step with different values	Jinming Wu	Fluent UDF and Scheme Programming	1	November 19, 2015 03:20
[dsmcFoam] Where is dsmcFieldsCalc executed?	gautcho	OpenFOAM	8	February 7, 2014 22:37
pimpleFoam: turbulence->correct(); is not executed when using residualControl	hfs	OpenFOAM Running, Solving & CFD	3	October 29, 2013 08:35

January 26, 2021, 12:49		#3
jhz New Member Join Date: Dec 2020 Posts: 19 Rep Power: 5	That makes sense - thank you!