cuda algorithms

should be asked why it was not supported in the past. Thrust at is a third-party library. It imitates the C ++ STL method to encapsulate some cuda data structures and primitive algorithms (such as scan, reduce, and sort, this allows people without the foundation of Cuda to use GPU acceleration in C ++ programs. This library has been released for a long time and

compiler and language improvements for CUDA9 Increased support for C + + 14 with the Cuda 9,NVCC compiler, including new features A generic lambda expression that uses the Auto keyword instead of the parameter type; Auto lambda = [] (auto A,auto b) {return a * b;}; The return type of the feature is deducted (using the Auto keyword as the return type, as shown in the previous example) The CONSTEXPR function can contain fewer restrictions, including var

CUDA 5, CUDAGPU Architecture SM (Streaming Multiprocessors) is a very important part of the GPU architecture. The concurrency of GPU hardware is determined by SM. Taking the Fermi architecture as an example, it includes the following main components: CUDA cores Shared Memory/L1Cache Register File Load/Store Units Special Function Units Warp Scheduler Each SM in the GPU is designed to support hundred

One, using the GPU module provided in the OPENCV At present, many GPU functions have been provided in OpenCV, and the GPU modules provided by OPENCV can be used to accelerate most image processing. Basic use method, please refer to: http://www.cnblogs.com/dwdxdy/p/3244508.html The advantage of this method is simple, using Gpumat to manage the data transfer between CPU and GPU, and does not need to pay attention to the setting of kernel function call parameter, only need to pay attention to the l

Cuda Memory Model: GPU chip: Register, shared memory; Onboard memory: local memory, constant memory, texture memory, texture memory, global memory; Host memory: host memory, pinned memory. Register: extremely low access latency; Basic Unit: register file (32bit/each) Computing power 1.0/1.1 hardware: 8192/Sm; Computing power 1.2/1.3 hardware: 16384/Sm; The register occupied by each thread is limited. Do not assign too many private variables to it dur

CUDA 6, CUDAWarp Logically, all threads are parallel. However, from the hardware point of view, not all threads can be executed at the same time. Next we will explain some of the essence of warp.Warps and Thread Blocks Warp is the basic execution unit of SM. A warp contains 32 parallel threads, which are executed in SMIT mode. That is to say, all threads execute the same command, and each thread uses its own data to execute the command. A block can be

1, based on VC + + WIN32+CUDA+OPENGL combination of remote sensing image displayIn this combination scenario, OpenGL is set to the following two ways when initialized, with the same effect// setting mode 1glutinitdisplaymode (glut_double | GLUT_RGBA); // setting Mode 2glutinitdisplaymode (glut_double | GLUT_RGB);Extracting the pixel data from the remote sensing image data, the R, G, and b three channels can be assigned to the pixel buffer objects (pb

Document directory Function qualifier Variable type qualifier Execute Configuration Built-in Variables Time Functions Synchronous Functions 1. Parallel Computing 1) Single-core command-level parallel ILP-enables the execution unit of a single processor to execute multiple commands simultaneously 2) multi-core parallel TLP-integrate multiple processor cores on one chip to achieve line-level parallel 3) multi-processor parallelism-Install multiple processors on a single circuit board and i

Win10 with CMake 3.5.2 and vs update1 compiling GPU version (Cuda 8.0, CUDNN v5 for Cuda 8.0) Open compile release and debug version with VS 2015 See the example on the net there are three inside the project Folders include (Include directories containing Mxnet,dmlc,mshadow)Lib (contains Libmxnet.dll, libmxnet.lib, put it in vs. compiled)Python (contains a mxnet,setup.py, and build, but the build contains t

Today we have a few gains, successfully running the array summation code: Just add the number of n sumEnvironment: cuda5.0,vs2010#include "cuda_runtime.h"#include "Device_launch_parameters.h"#include cudaerror_t Addwithcuda (int *c, int *a);#define TOTALN 72120#define Blocks_pergrid 32#define THREADS_PERBLOCK 64//2^8__global__ void Sumarray (int *c, int *a)//, int *b){__shared__ unsigned int mycache[threads_perblock];//sets the shared memory within each block threadsperblock==blockdim.xint i = t

Two-dimensional FFT in cuda-cufftExecC2C, cuda-cufftexecc2c #include

Install cuda6.5 + vs2012, the operating system is win8.1 version, first of all the next GPU-Z detected a bit: It can be seen that this video card is a low-end configuration, the key is to look at two: Shaders = 384, also known as Sm, or the number of core/stream processors. The larger the number, the more parallel threads are executed, and the larger the computing workload per unit time. Buswidth = 64bit. The larger the value, the faster the data processing speed. Next let's take a look at the

In this paper, the basic concepts of CUDA parallel programming are illustrated by the vector summation operation. The so-called vector summation is the addition of the corresponding element 22 in the two array data, and the result is saved in the third array. As shown in the following:1. CPU-based vector summation:The code is simple:#include the use of the while loop above is somewhat complex, but it is intended to allow the code to run concurrently o

CUDA 3, CUDAPreface The thread organization form is crucial to the program performance. This blog post mainly introduces the thread organization form in the following situations: 2D grid 2D block Thread Index Generally, a matrix is linearly stored in global memory and linear with rows: In kernel, the unique index of a thread is very useful. To determine the index of a thread, we take 2D as an example: Thread and block Indexes Element coordinates

=2; - float*x_h, *x_d, *y_h, *Y_d; -X_h = (float*) malloc (n *sizeof(float)); -Y_h = (float*) malloc (n *sizeof(float)); + for(inti =0; I ) - { +X_h[i] = (float) I; AY_h[i] =1.0; at } -Cudamalloc (x_d, n *sizeof(float)); -Cudamalloc (y_d, n *sizeof(float)); -cudamemcpy (X_d, X_h, n *sizeof(float), cudamemcpyhosttodevice); -cudamemcpy (Y_d, Y_h, n *sizeof(float), cudamemcpyhosttodevice); -Saxpy 1, ->>>(A, x_d, Y_d, n); incudamemcpy (Y_h, Y_d, n *sizeof(float), cudamemcpydeviceto

OpenCV read the picture and pass the picture data to Cuda processing #include Reference code: Calculate PI #include

acceleration algorithm GPU threads can dynamically derive new threads to better accommodate data flow.By maximizing communication with the GPU, dynamic parallel technology can greatly simplify parallel programming,Let more popular algorithms support GPU acceleration, such as adaptive mesh encryption, computational fluid dynamics, and so on. --gpu-callable Library: Support for third party ecosystems The new CUDA