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December 12, 2017, 11:12 |
Ansys Fluent Simulation Warning
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#1 |
Member
Hells Blade
Join Date: Nov 2017
Posts: 61
Rep Power: 8 |
Has anyone ever got such a warning in Fluent : LOW_DEG: Requires 2048 items per warp!!!
What does this interpret ? |
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December 12, 2017, 22:33 |
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#2 | |
Member
Join Date: May 2016
Posts: 38
Rep Power: 10 |
Quote:
This is based on: LOW_DEG being a low degree of freedom warning, for a FVM formulation is ~the number of cells. A warp is a Nvidia term (~equivalent to a Wavefront in AMD hardware) for the high level grouping of threads on the GPU, with the 2048 being the number of CUDA cores. |
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December 14, 2017, 05:19 |
Warning Ansys Fluent
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#3 |
Member
Hells Blade
Join Date: Nov 2017
Posts: 61
Rep Power: 8 |
The simulation is running and my residuals look to be fine around e-6.
I just get this warning LOW_DEG: Requires 2048 items per warp initially in between some iterations and then its not there. I am not sure how it affects my results |
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December 14, 2017, 05:24 |
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#4 |
Member
Join Date: May 2016
Posts: 38
Rep Power: 10 |
That's interesting, can you give us more details on your setup?, For example what kind of hardware your running it on and the setup of the simulation e.g Number of elements, Coupled or SIMPLE, Heat Equation on or off, Adaptive Meshing etc.
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December 18, 2017, 07:06 |
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#5 |
Member
Hells Blade
Join Date: Nov 2017
Posts: 61
Rep Power: 8 |
My PC on which i locally run the simulns is basically 64 bit Professor , 64 Gb ram 4.20 Ghz
I am running a transient simuln where i am checking the mass flow rate and vel , pressure at my outlet when i have a pressure of 6-24 bar wiith varied no of inlets as in the pic attached (5 inlets in the pic) I am running the sim on K-epslion Turbulent Model density based transient sim for approx 40 iteration upto 10 seconds I am getting my results however I am not sure if these warning are affecting my results |
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