The File Extensions Database

.CU File Extension

  • Developer by: NVIDIA
  • Category: Developer Files
  • Format: Text

What is an .CU file?

.CU is CUDA Source Code File

Developer file written for CUDA, an NVIDIA architecture created for parallel processing on nVidia GPUs; contains source code written in the "C for CUDA" language, which is similar to the standard C language with a few CUDA-specific extensions.

CU files are called "kernels," which are processing units that can run in parallel on NVIDIA's CUDA-based GPUs. Kernels are compiled with nvcc, a compiler program included with the NVIDIA CUDA Toolkit.

NOTE: CUDA applications are often used in scientific or academic settings for large-scale computations. CUDA-based GPUs are also referred to as GPGPUs, which stands for General Purpose Graphical Processing Units.

Programs that open CUDA Source Code File
Microsoft Notepad

How to solve problems with CU files

  • Associate the CU file extension with the correct application. On :
    Windows: Right click on any CU file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.CU files". Mac: Right click (or Ctrl-click) the CU file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .CU is CUDA Source Code File. Because only the current version supports the latest CU file format. Search, therefore, e.g. on the NVIDIA manufacturer website after an available .CU is CUDA Source Code File update.
  • To make sure that your CU file is not corrupted or virus-infected, get the file again and scan it with antivirus software.