The GPU Computing SDK includes 100+ code samples, utilities, whitepapers, and additional documentation to help you get started developing, porting, and optimizing your applications for the CUDA architecture.
Download the GPU Computing SDK Installer from the CUDA Toolkit Download Page
You may need to install the latest NVIDIA drivers and CUDA Toolkit to compile and run the code samples. Refer to the SDK release notes for details.
There are several sets of code samples, please follow the links to browse the examples:
- CUDA C/C++ Code Samples <<
- DirectCompute Code Samples
- CUDA Library Samples
- CUDA Toolkit & SDK Documentation
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 CUDA Segmentation Tree Thrust LibraryThis sample demonstrates an approach to the image segmentation trees construction. This method is based on Boruvka's MST algorithm. |
 
Download - Windows (x86) |
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simpleAssert This CUDA Runtime API sample is a very basic sample that implements how to use the assert function in the device code. Requires Compute Capability 2.0 . |
Download - Windows (x86) |
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Simple Cubemap Texture Simple example that demonstrates how to use a new CUDA 4.1 feature to support cubemap Textures in CUDA C. |
Download - Windows (x86) |
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Volumetric Filtering with 3D Textures and Surface Writes This sample demonstrates 3D Volumetric Filtering using 3D Textures and 3D Surface Writes. |
Download - Windows (x86) |
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NewDelete This sample demonstrates dynamic global memory allocation through device C++ new and delete operators and virtual function declarations available with CUDA 4.0. |
Download - Windows (x86) |
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Optical Flow Variational optical flow estimation example. Uses textures for image operations. Shows how simple PDE solver can be accelerated with CUDA. |
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Download - Windows (x86) |
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Simple Peer-to-Peer Transfers with Multi-GPU This application demonstrates the new CUDA 4.0 APIs that support Peer-To-Peer (P2P) copies, Peer-To-Peer (P2P) addressing, and UVA (Unified Virtual Memory Addressing) between multiple Tesla GPUs. |
Download - Windows (x86) |
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Using Inline PTX A simple test application that demonstrates a new CUDA 4.0 ability to embed PTX in a CUDA kernel. |
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Download - Windows (x86) |
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Simple Layered Texture Simple example that demonstrates how to use a new CUDA 4.0 feature to support layered Textures in CUDA C. |
Download - Windows (x86) |
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VFlockingD3D10 This sample demonstrates a CUDA mathematical simulation of group of birds behavior when in flight. |
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CUDA Video Encode (C Library) API This sample demonstrates how to effectively use the CUDA Video Encoder API encode H.264 video. Video input in YUV formats are taken as input (either CPU system or GPU memory) and video output frames are encoded to an H.264 file |
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SLI D3D10 Texture Simple program which demonstrates SLI with Direct3D10 Texture interoperability with CUDA. The program creates a D3D10 Texture which is written to from a CUDA kernel. Direct3D then renders the results on the screen. A Direct3D Capable device is required. |
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simplePrintf This CUDA Runtime API sample is a very basic sample that implements how to use the printf function in the device code. Specifically, for devices with compute capability less than 2.0, the function cuPrintf is called; otherwise, printf can be used directly. |
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Download - Windows (x86) |
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Bilateral Filter Bilateral filter is an edge-preserving non-linear smoothing filter that is implemented with CUDA with OpenGL rendering. It can be used in image recovery and denoising. Each pixel is weight by considering both the spatial distance and color distance between its neibors. Reference:"C. Tomasi, R. Manduchi, Bilateral Filtering for Gray and Color Images, proceeding of the ICCV, 1998, http://users.soe.ucsc.edu/~manduchi/Papers/ICCV98.pdf" |
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Download - Windows (x86) |
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Simple Surface Write Simple example that demonstrates the use of 2D surface references (Write-to-Texture) |
Download - Windows (x86) |
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Function Pointers This sample illustrates how to use function pointers and implements the Sobel Edge Detection filter for 8-bit monochrome images. |
Download - Windows (x86) |
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Interval Interval arithmetic operators and example. Uses various C++ features (templates and recursion). The recursive mode requires Compute SM 2.0 capabilities. |
Download - Windows (x86) |
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Simple D3D11 Texture Simple program which demonstrates Direct3D11 Texture interoperability with CUDA. The program creates a number of D3D11 Textures (2D, 3D, and CubeMap) which are written to from CUDA kernels. Direct3D then renders the results on the screen. A Direct3D Capable device is required. |
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Simple Multi Copy and Compute Supported in GPUs with Compute Capability 1.1, overlaping compute with one memcopy is possible from the host system. For Quadro and Tesla GPUs with Compute Capability 2.0, a second overlapped copy operation in either direction at full speed is possible (PCI-e is symmetric). This sample illustrates the usage of CUDA streams to achieve overlapping of kernel execution with data copies to and from the device. |
or later
Download - Windows (x86) |
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Vector Addition This CUDA Runtime API sample is a very basic sample that implements element by element vector addition. It is the same as the sample illustrating Chapter 3 of the programming guide with some additions like error checking. |
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Download - Windows (x86) |
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Vector Addition Driver API This Vector Addition sample is a basic sample that is implemented element by element. It is the same as the sample illustrating Chapter 3 of the programming guide with some additions like error checking. This sample also uses the new CUDA 4.0 kernel launch Driver API. |
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Download - Windows (x86) |
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Device Query This sample enumerates the properties of the CUDA devices present in the system. |
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Download - Windows (x86) |
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Device Query Driver API This sample enumerates the properties of the CUDA devices present using CUDA Driver API calls |
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Download - Windows (x86) |
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Template using CUDA Runtime A trivial template project that can be used as a starting point to create new CUDA Runtime API projects. |
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Template A trivial template project that can be used as a starting point to create new CUDA projects. |
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Download - Windows (x86) |
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C++ Integration This example demonstrates how to integrate CUDA into an existing C++ application, i.e. the CUDA entry point on host side is only a function which is called from C++ code and only the file containing this function is compiled with nvcc. It also demonstrates that vector types can be used from cpp. |
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Download - Windows (x86) |
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Bandwidth Test This is a simple test program to measure the memcopy bandwidth of the GPU and memcpy bandwidth across PCI-e. This test application is capable of measuring device to device copy bandwidth, host to device copy bandwidth for pageable and page-locked memory, and device to host copy bandwidth for pageable and page-locked memory. |
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Download - Windows (x86) |
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asyncAPI This sample uses CUDA streams and events to overlap execution on CPU and GPU. |
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Download - Windows (x86) |
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Clock This example shows how to use the clock function to measure the performance of kernel accurately. |
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Download - Windows (x86) |
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Simple Atomic Intrinsics A simple demonstration of global memory atomic instructions. Requires Compute Capability 1.1 or higher. |
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Download - Windows (x86) |
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Pitch Linear Texture Use of Pitch Linear Textures |
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Download - Windows (x86) |
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simpleStreams This sample uses CUDA streams to overlap kernel executions with memory copies between the host and a GPU device. This sample uses a new CUDA 4.0 feature that supports pinning of generic host memory. Requires Compute Capability 1.1 or higher. |
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Download - Windows (x86) |
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Simple Templates This sample is a templatized version of the template project. It also shows how to correctly templatize dynamically allocated shared memory arrays. |
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Download - Windows (x86) |
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CUDA C 3D FDTD This sample applies a finite differences time domain progression stencil on a 3D surface. |
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Download - Windows (x86) |
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Simple Texture Simple example that demonstrates use of Textures in CUDA. |
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Download - Windows (x86) |
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Simple Texture (Driver Version) Simple example that demonstrates use of Textures in CUDA. This sample uses the new CUDA 4.0 kernel launch Driver API. |
or later
Download - Windows (x86) |
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Simple Vote Intrinsics Simple program which demonstrates how to use the Vote (any, all) intrinsic instruction in a CUDA kernel. Requires Compute Capability 1.2 or higher. |
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Download - Windows (x86) |
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simpleZeroCopy This sample illustrates how to use Zero MemCopy, kernels can read and write directly to pinned system memory. This sample requires GPUs that support this feature (MCP79 and GT200). |
Download - Windows (x86) |
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CUDA Context Thread Management Simple program illustrating how to the CUDA Context Management API and uses the new CUDA 4.0parameter passing and CUDA launch API. CUDA contexts can be created separately and attached independently to different threads. |
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Download - Windows (x86) |
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Simple Multi-GPU This application demonstrates how to use the new CUDA 4.0 API for CUDA context management and multi-threaded access to run CUDA kernels on multiple-GPUs. |
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Download - Windows (x86) |
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Simple Direct3D9 (Vertex Arrays) Simple program which demonstrates interoperability between CUDA and Direct3D9. The program generates a vertex array with CUDA and uses Direct3D9 to render the geometry. A Direct3D capable device is required. |
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Simple D3D9 Texture Simple program which demonstrates Direct3D9 Texture interoperability with CUDA. The program creates a number of D3D9 Textures (2D, 3D, and CubeMap) which are written to from CUDA kernels. Direct3D then renders the results on the screen. A Direct3D capable device is required. |
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Simple Direct3D10 (Vertex Array) Simple program which demonstrates interoperability between CUDA and Direct3D10. The program generates a vertex array with CUDA and uses Direct3D10 to render the geometry. A Direct3D Capable device is required. |
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Simple D3D10 Texture Simple program which demonstrates how to interoperate CUDA with Direct3D10 Texture. The program creates a number of D3D10 Textures (2D, 3D, and CubeMap) which are generated from CUDA kernels. Direct3D then renders the results on the screen. A Direct3D10 Capable device is required. |
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Simple OpenGL Simple program which demonstrates interoperability between CUDA and OpenGL. The program modifies vertex positions with CUDA and uses OpenGL to render the geometry. |
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Download - Windows (x86) |
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Simple Texture 3D Simple example that demonstrates use of 3D Textures in CUDA. |
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Download - Windows (x86) |
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Matrix Multiplication (CUDA Runtime API Version) This sample implements matrix multiplication and is exactly the same as Chapter 6 of the programming guide. It has been written for clarity of exposition to illustrate various CUDA programming principles, not with the goal of providing the most performant generic kernel for matrix multiplication. To illustrate GPU performance for matrix multiply, this sample also shows how to use the new CUDA 4.0 interface for CUBLAS to demonstrate high-performance performance for matrix multiplication. |
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Download - Windows (x86) |
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Matrix Multiplication (CUDA Driver API version with Dynamic Linking Version) This sample revisits matrix multiplication using the CUDA driver API. It demonstrates how to link to CUDA driver at runtime and how to use JIT (just-in-time) compilation from PTX code. It has been written for clarity of exposition to illustrate various CUDA programming principles, not with the goal of providing the most performant generic kernel for matrix multiplication. CUBLAS provides high-performance matrix multiplication. |
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Download - Windows (x86) |
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Scalar Product This sample calculates scalar products of a given set of input vector pairs. |
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Download - Windows (x86) |
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Concurrent Kernels This sample demonstrates the use of CUDA streams for concurrent execution of several kernels on devices of compute capability 2.0 or higher. Devices of compute capability 1.x will run the kernels sequentially.It also illustrates how to introduce dependencies between CUDA streams with the new cudaStreamWaitEvent function introduced in CUDA 3.2 |
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Download - Windows (x86) |
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Aligned Types A simple test, showing huge access speed gap between aligned and misaligned structures. |
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Download - Windows (x86) |
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PTX Just-in-Time compilation This sample trates how to use JIT compilation for PTX code. |
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Download - Windows (x86) |
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DCT8x8 This sample demonstrates how Discrete Cosine Transform (DCT) for blocks of 8 by 8 pixels can be performed using CUDA: a naive implementation by definition and a more traditional approach used in many libraries. As opposed to implementing DCT in a fragment shader, CUDA allows for an easier and more efficient implementation. |
or later
Download - Windows (x86) |
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1D Discrete Haar Wavelet Decomposition Discrete Haar wavelet decomposition for 1D signals with a length which is a power of 2. |
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Download - Windows (x86) |
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Eigenvalues The computation of all or a subset of all eigenvalues is an important problem in Linear Algebra, statistics, physics, and many other fields. This sample demonstrates a parallel implementation of a bisection algorithm for the computation of all eigenvalues of a tridiagonal symmetric matrix of arbitrary size with CUDA. |
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Download - Windows (x86) |
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Fast Walsh Transform Naturally(Hadamard)-ordered Fast Walsh Tranform for batched vectors of arbitrary eligible(power of two) lengths |
or later
Download - Windows (x86) |
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CUDA Histogram This sample demonstrates efficient implementation of 64-bin and 256-bin histogram. |
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Download - Windows (x86) |
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Line of Sight This sample is an implementation of a simple line-of-sight algorithm: Given a height map and a ray originating at some observation point, it computes all the points along the ray that are visible from the observation point. The implementation is based on the Thrust library (http://code.google.com/p/thrust/). |
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Download - Windows (x86) |
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Matrix Transpose This sample demonstrates Matrix Transpose. Different performance are shown to achieve high performance. |
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Download - Windows (x86) |
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Box Filter Fast image box filter using CUDA with OpenGL rendering. |
or later
Download - Windows (x86) |
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Post-Process in OpenGL This sample shows how to post-process an image rendered in OpenGL using CUDA. |
or later
Download - Windows (x86) |
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CUDA Parallel Reduction A parallel sum reduction that computes the sum of a large arrays of values. This sample demonstrates several important optimization strategies for 1:Data-Parallel Algorithms like reduction. |
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Download - Windows (x86) |
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CUDA Parallel Prefix Sum (Scan) This example demonstrates an efficient CUDA implementation of parallel prefix sum, also known as "scan". Given an array of numbers, scan computes a new array in which each element is the sum of all the elements before it in the input array. |
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Download - Windows (x86) |
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DirectX Texture Compressor (DXTC) High Quality DXT Compression using CUDA. This example shows how to implement an existing computationally-intensive CPU compression algorithm in parallel on the GPU, and obtain an order of magnitude performance improvement. |
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Download - Windows (x86) |
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Image denoising This sample demonstrates two adaptive image denoising technqiues: KNN and NLM, based on computation of both geometric and color distance between texels. While both techniques are implemented in the DirectX SDK using shaders, massively speeded up variation of the latter techique, taking advantage of shared memory, is implemented in addition to DirectX counterparts. |
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Download - Windows (x86) |
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Sobel Filter This sample implements the Sobel edge detection filter for 8-bit monochrome images. |
or later
Download - Windows (x86) |
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Recursive Gaussian Filter This sample implements a Gaussian blur using Deriche's recursive method. The advantage of this method is that the execution time is independent of the filter width. |
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Download - Windows (x86) |
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CUDA Video Decoder D3D9 API This sample demonstrates how to efficiently use the CUDA Video Decoder API to decode MPEG-2, VC-1, or H.264 sources. YUV to RGB conversion of video is accomplished with CUDA kernel. The output result is rendered to a D3D9 surface. The decoded video is not displayed on the screen, but with -displayvideo at the command line parameter, the video output can be seen. Requires a Direct3D capable device and Compute Capability 1.1 or higher. |
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CUDA Video Decoder GL API This sample demonstrates how to efficiently use the CUDA Video Decoder API to decode video sources based on MPEG-2, VC-1, and H.264. YUV to RGB conversion of video is accomplished with CUDA kernel. The output result is rendered to a OpenGL surface. The decoded video is black, but can be enabled with -displayvideo added to the command line. Requires Compute Capability 1.1 or higher. |
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Bicubic Texture Filtering This sample demonstrates how to efficiently implement bicubic Texture filtering in CUDA. |
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Download - Windows (x86) |
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Fluids (Direct3D Version) An example of fluid simulation using CUDA and CUFFT, with Direct3D 9 rendering. A Direct3D Capable device is required. |
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Fluids (OpenGL Version) An example of fluid simulation using CUDA and CUFFT, with OpenGL rendering. |
or later
Download - Windows (x86) |
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CUDA FFT Ocean Simulation This sample simulates an Ocean heightfield using CUFFT and renders the result using OpenGL. |
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Download - Windows (x86) |
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FFT-Based 2D Convolution This sample demonstrates how 2D convolutions with very large kernel sizes can be efficiently implemented using FFT transformations. |
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Download - Windows (x86) |
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CUDA Separable Convolution This sample implements a separable convolution filter of a 2D signal with a gaussian kernel. |
or later
Download - Windows (x86) |
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Texture-based Separable Convolution Texture-based implementation of a separable 2D convolution with a gaussian kernel. Used for performance comparison against convolutionSeparable. |
or later
Download - Windows (x86) |
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threadFenceReduction This sample shows how to perform a reduction operation on an array of values using the thread Fence intrinsic. to produce a single value in a single kernel (as opposed to two or more kernel calls as shown in the "reduction" SDK sample). Single-pass reduction requires global atomic instructions (Compute Capability 1.1 or later) and the _threadfence() intrinsic (CUDA 2.2 or later). |
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Download - Windows (x86) |
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CUDA Radix Sort using the Thrust Library This sample demonstrates a very fast and efficient parallel radix sort uses Thrust library (http://code.google.com/p/thrust/).. The included RadixSort class can sort either key-value pairs (with float or unsigned integer keys) or keys only. |
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Download - Windows (x86) |
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CUDA Sorting Networks This sample implements bitonic sort and odd-even merge sort (also known as Batcher's sort), algorithms belonging to the class of sorting networks. While generally subefficient on large sequences compared to algorithms with better asymptotic algorithmic complexity (i.e. merge sort or radix sort), may be the algorithms of choice for sorting batches of short- to mid-sized (key, value) array pairs. Refer to the excellent tutorial by H. W. Lang http://www.iti.fh-flensburg.de/lang/algorithmen/sortieren/networks/indexen.htm |
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Download - Windows (x86) |
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Merge Sort This sample implements a merge sort (also known as Batcher's sort), algorithms belonging to the class of sorting networks. While generally subefficient on large sequences compared to algorithms with better asymptotic algorithmic complexity (i.e. merge sort or radix sort), may be the algorithms of choice for sorting batches of short- to mid-sized (key, value) array pairs. Refer to the excellent tutorial by H. W. Lang http://www.iti.fh-flensburg.de/lang/algorithmen/sortieren/networks/indexen.htm |
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Download - Windows (x86) |
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Binomial Option Pricing This sample evaluates fair call price for a given set of European options under binomial model. This sample will also take advantage of double precision if a GTX 200 class GPU is present. |
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Download - Windows (x86) |
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Black-Scholes Option Pricing This sample evaluates fair call and put prices for a given set of European options by Black-Scholes formula. |
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Download - Windows (x86) |
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Niederreiter Quasirandom Sequence Generator This sample implements Niederreiter Quasirandom Sequence Generator and Inverse Cumulative Normal Distribution function for Standart Normal Distribution generation. |
or later
Download - Windows (x86) |
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Monte Carlo Option Pricing This sample evaluates fair call price for a given set of European options using Monte Carlo approach. This sample use double precision hardware if a GTX 200 class GPU is present. |
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Download - Windows (x86) |
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Monte Carlo Option Pricing with Multi-GPU support This sample evaluates fair call price for a given set of European options using the Monte Carlo approach, taking advantage of all CUDA-capable GPUs installed in the system. This sample use double precision hardware if a GTX 200 class GPU is present. The sample also takes advantage of CUDA 4.0 capability to supporting using a single CPU thread to control multiple GPUs |
or later
Download - Windows (x86) |
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Mandelbrot This sample uses CUDA to compute and display the Mandelbrot or Julia sets interactively. It also illustrates the use of "double single" arithmetic to improve precision when zooming a long way into the pattern. This sample use double precision hardware if a GT200 class GPU is present. Thanks to Mark Granger of NewTek who submitted this sample to the SDK! |
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Download - Windows (x86) |
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Particles This sample uses CUDA to simulate and visualize a large set of particles and their physical interaction. It implements a uniform grid data structure using either atomic operations or a fast radix sort from the Thrust library |
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Download - Windows (x86) |
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Marching Cubes Isosurfaces This sample extracts a geometric isosurface from a volume dataset using the marching cubes algorithm. It uses the scan (prefix sum) function from the Thrust library to perform stream compaction. |
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Download - Windows (x86) |
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Volume Rendering with 3D Textures This sample demonstrates basic volume rendering using 3D Textures. |
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Download - Windows (x86) |
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CUDA N-Body Simulation This sample demonstrates efficient all-pairs simulation of a gravitational n-body simulation in CUDA. This sample accompanies the GPU Gems 3 chapter "Fast N-Body Simulation with CUDA". With CUDA 4.0, the nBody sample has been updated to take advantage of new features to easily scale the n-body simulation across multiple GPUs in a single PC. Adding “-numdevices= |
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Download - Windows (x86) |
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Smoke Particles Smoke simulation with volumetric shadows using half-angle slicing technique. Uses CUDA for procedural simulation, Thrust Library for sorting algorithms, and OpenGL for graphics rendering. |
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Download - Windows (x86) |
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Sobol Quasirandom Number Generator This sample implements Sobol Quasirandom Sequence Generator. |
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Download - Windows (x86) |
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Matrix Multiplication (CUDA Driver API Version) This sample implements matrix multiplication and uses the new CUDA 4.0 kernel launch Driver API. It has been written for clarity of exposition to illustrate various CUDA programming principles, not with the goal of providing the most performant generic kernel for matrix multiplication. CUBLAS provides high-performance matrix multiplication. |
or later
Download - Windows (x86) |
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simpleMPI Simple example demonstrating how to use MPI in combination with CUDA. This executable is not pre-built with the SDK installer. |
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Download - Windows (x86) |
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Excel 2010 CUDA Integration Example This sample demonstrates how to integrate Excel 2010 with CUDA using array formulas. This plug-in depends on the Microsoft Excel 2010 Developer Kit, which can be downloaded from the Microsoft Developer website. This sample is not pre-built with the CUDA SDK. |
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Excel 2007 CUDA Integration Example This sample demonstrates how to integrate Excel 2007 with CUDA using array formulas. This plug-in depends on the Microsoft Excel Developer Kit. This sample is not pre-built with the CUDA SDK. |
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cudaOpenMP This sample demonstrates how to use OpenMP API to write an application for multiple GPUs. This executable is not pre-built with the SDK installer. |
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Registered Developers Website
NVDeveloper (old site)