Issues with running a compiled UDF case and data on a Linux supercomputer

- February 9, 2022 at 9:32 pm
  
  shitizsehgal
  Subscriber
  
  Hi,
  I have set up a simulation on my Windows machine and it has UDFs compiled to solve for the desired physics. The simulation is running fine on the Windows machine, but I am having a hard time running this simulation on my university's Linux-based supercomputer.
  
  Basically, I need help with the procedure (journal file, maybe?) for running a simulation with UDFs in it on a Linux supercomputer. Please help.
- February 10, 2022 at 11:42 am
  
  Rob
  Ansys Employee
  
  You'll need to recompile the UDF for the cluster: Linux and Win10 libraries are different. You may also need to convert the Win10 text into Linux as Windows scatters a load of white space characters into the file that Linux doesn't like. We use:
  dos2unix myfile.c
  to get around this, it's set on our clusters. Not sure if that's normal as it's worked like that since we were forced onto Windows desktops about 15 years ago.
- February 10, 2022 at 5:22 pm
  
  shitizsehgal
  Subscriber
  
  Hi Rob,
  I am sure what you are suggesting works too. However, I fixed the problem using a different way. Basically, I unchecked the option of compiling via the built-in compiler and the UDF compiled using a Microsoft compiler. Not sure if it was Visual Studio. Running the compiled case and data with UDF and libudf on a Linux supercomputer went fine and I was able to run the simulation.
- February 11, 2022 at 9:43 am
  
  Rob
  Ansys Employee
  
  OK, the LINUX machine has a proper compiler in the OS, the built in compiler is intended to bypass the whole Microsoft VS mess that comes with every release as Microsoft move files/change package names. Sounds like the inbuilt compiler may need checking on LINUX.

Viewing 3 reply threads

You must be logged in to reply to this topic.

Ansys Innovation Space

Boost Ansys Fluent Simulations with AWS

Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

Earth Rescue – An Ansys Online Series

The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.

Ansys Blog

Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.

Trending discussions