Opening CU Files

The CU file type is primarily associated with NVCC.

CU	File extension: CU
	File type:	source code file

What is a CU file?

CU files mostly belong to NVCC. A CU file is a CUDA source code file used for writing programs that run on Nvidia GPUs. It contains code in the CUDA programming language that is compiled with tools like NVCC from the NVIDIA CUDA Toolkit.
Files with this extension are designed for parallel computing tasks. They can be opened in any text editor, though using an IDE with CUDA support can help with syntax highlighting and error-checking.
Consider these points:

CUDA source code for developing GPU-accelerated applications.

Compilation is handled by compilers such as NVCC, sometimes encoding the source in UTF-8.

High performance tasks are managed on Nvidia hardware.

FilExt.com tip: If more detail is needed, you may visit the CUDA Toolkit webpage for further technical guidance.

How can I open a CU file?

You need a suitable software like NVCC to open a CU file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CU file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CU file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CU Text Viewer

Choose your .cu file to view

or drag and drop it here

Online File Viewer

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How to extract texts from CU files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

If you want to extract texts from CU file or capture a screenshot, you can use our free Online CU File Viewer:

To do this, click the button "Choose your .cu file to view" on this page.
Your CU file will then be displayed in the browser.
Now click on "Save as..." at the top of the page.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Download the converted file.

Programs that open and convert CU files:

NVCC
See the previous paragraphs to learn more about the main application. CU files are often referred to as NVCC developers because this type of file is primarily created or used by this software.
CUDA Toolkit
.CU files are primarily associated with the CUDA programming language, developed by NVIDIA. These files contain source code written in CUDA C/C++, a language extension that allows developers to write code that will be executed on NVIDIA GPUs. The .CU files are compiled using the NVCC compiler, which is part of the CUDA Toolkit. The compiler translates the CUDA code into optimized instructions for the GPU, enabling parallel processing and accelerating computationally intensive tasks. This file format is classified as Developer Files.

CU file format:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. So you need a detailed analysis of a file to find out the format and the associated program. Below you will find our evaluation of the CU files:

As a file extension, CU isn't very common and mainly uses a defined CU format. The following file formats are most commonly found in CU files:

80% of all CU files are using the well-known Source file format to store the data. A source code is the set of instructions written by a programmer using a computer programming language like JavaScript, C++ or Basic. This code is translated into machine language by a compiler. The translated result is called app, program or executable. These files are plain text, which means they can be viewed with any text editor such as Windows Editor, Nano for Linux, and TextEdit for macOS. CU files can be up to 28 KB in size, but are often around 740 bytes - 6 KB. The file type was developed only in the last few years. The following keywords are characteristic: cuda, #include <stdio.h>, __global__ void and define. Some examples of file names are kernel.cu. Such CU files store data about cuda, vectoradd, task, matrix, vector, hello, increase, general, reduce, shared and block.

The remaining 20% of all CU files are files with no common format. Often described as vecadd, addition, matadd or crack. If you want to find out what your CU file contains, drag and drop it onto this page.

Technical Data for CU File Extension

File classification:

Developer

Related files:

c, cpp, cuh, h, ptx, ~cu, pl, ml, java

Mime type:

application/cu-seeme, text/x-c++src, text/x-cuda

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: acufile
EXEFile: C:\Herosoft\Hero Audio Convert\AdConvert.EXE %1

a cu source code file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with CU files

Associate the CU file extension with the correct application.
Update your software that should actually open source code files. Because only the current version supports the latest CU file format. Search, therefore, e.g. on the manufacturer website after an available NVCC update.
To make sure that your CU file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .CU file online - secure, fast, and no downloads needed.