cudaMemcpy2D

最新推荐文章于 2024-08-12 12:09:36 发布
最新推荐文章于 2024-08-12 12:09:36 发布
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cudaMemcpy2D介绍
weixin_30270561的博客
03-31 1832
cudaMemcpy2D( d_A, // 目的指针 d_pitch, // 目的pitch bmp1, // 源指针 sizeof(int)*2, // 源数据pitch sizeof(int)*2, // 数据拷贝宽度 2, // 数据拷贝高度 cudaMemcpyHostToDevice);//从CPU拷贝二维数组到...
cudaMemcpy2D() 函数
最新发布
xue1_的博客
06-03 297
cudaMemcpy2D() 函数
cuda数据传输之cudaMemcpy()和cudaMemcpy2D()详解
qq_45241855的博客
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核函数中：a = (double*)((char*)dev_a + i*pitch)，这样对a的遍历方式是获取数组每一行的数据，同时计算a的结果直接作用在dev_a 上，而不需要再将a赋值给dev_a！总结：无论一维还是二维数组，都变为一维数组，进行传递，二维数组要注意数组的宽度大小。2. cudaMemcpy2D()传递一维数组、二维数组，已经核函数索引遍历的方法。再核函数中对一维数组索引，直接是0下标索引。
cudaMemcpy2D()函数
米饭的白色的专栏
12-03 4878
cudaMemcpy2D( d_A, // 目的指针 d_pitch, // 目的pitch bmp1, // 源指针 sizeof(int)*2, // 源数据pitch sizeof(int)*2, // 数据拷贝宽度 2, // 数据拷贝高度 cudaMemcpyHostToDevice);//从CPU拷贝二维数组到GP
cuda矩阵相加分块平铺cudaMemcpy2D
星辰大海的博客
07-27 891
该代码实现了矩阵相加计算，在GPU中将矩阵的数据分块平铺处理，使用cudaMemcpy2D优化矩阵访问，并且对比了算法相对于CPU版本的加速效果，验证了算法正确性。 #include "cuda_runtime.h" #include "device_launch_parameters.h" #include <stdio.h> #include <malloc.h> #include <random> #include "time.h" #define W 2000
cuda之二维数组的高效内存管理（cudaMallocPitch/cudaMemcpy2D）
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因为cuda具有高效利用GPU进行科学计算的优势，而人工智能的重点之一就是复杂的计算任务，因此学好GPU计算是学习AI的重点任务。这里，我们即将进行利用共享内存的矩阵运算。 我们看一个例子，如何对矩阵进行分配显卡内存以及元素赋值操作。通常来讲，在GPU中分配内存使用的是cudaMal...
cudaMemcpy和cudaMemcpy2D区别
10-09
`cudaMemcpy`和`cudaMemcpy2D`都是CUDA API中用于在GPU内存和主机内存之间进行数据传输的函数。它们之间的主要区别在于数据的布局和传输方式。 `cudaMemcpy`用于单个数据块的传输，可以在一个维度上或多个维度上...
CUDA多线程编程
ashiners的博客
08-12 1435
CUDA多线程编程
cudaMemcpy 二维数组
04-01
为了高效地管理 GPU 上的二维数组存储结构，可以利用 `cudaMallocPitch` 和 `cudaMemcpy2D` 函数来完成这些操作。 #### 使用 `cudaMallocPitch` 分配设备端内存 当分配二维数组时，推荐使用 `cudaMallocPitch` 来...
CUDA参考手册
05-08
16 1.4 EventManagement RT ............................................................................................................................... 17 1.4.1 cudaEventCreate ............................................................................................................................ 18 1.4.2 cudaEventRecord ........................................................................................................................... 19 1.4.3 cudaEventQuery ............................................................................................................................. 20 1.4.4 cudaEventSynchronize ................................................................................................................... 21 1.4.5 cudaEventDestroy .......................................................................................................................... 22 1.4.6 cudaEventElapsedTime .................................................................................................................. 23 1.5 MemoryManagement RT ........................................................................................................................... 24 1.5.1 cudaMalloc .................................................................................................................................... 25 1.5.2 cudaMallocPitch ............................................................................................................................ 26 1.5.3 cudaFree ........................................................................................................................................ 27 1.5.4 cudaMallocArray ........................................................................................................................... 28 1.5.5 cudaFreeArray ............................................................................................................................... 29 1.5.6 cudaMallocHost ............................................................................................................................. 30 1.5.7 cudaFreeHost ................................................................................................................................. 31 1.5.8 cudaMemset ................................................................................................................................... 32 1.5.9 cudaMemset2D .............................................................................................................................. 33 ii 1.5.10 cudaMemcpy .............................................................................................................................. 34 1.5.11 cudaMemcpy2D ......................................................................................................................... 35 1.5.12 cudaMemcpyToArray ................................................................................................................. 36 1.5.13 cudaMemcpy2DToArray ............................................................................................................ 37 1.5.14 cudaMemcpyFromArray ............................................................................................................. 38 1.5.15 cudaMemcpy2DFromArray ........................................................................................................ 39 1.5.16 cudaMemcpyArrayToArray ........................................................................................................ 40 1.5.17 cudaMemcpy2DArrayToArray .................................................................................................... 41 1.5.18 cudaMemcpyToSymbol .............................................................................................................. 42 1.5.19 cudaMemcpyFromSymbol .......................................................................................................... 43 1.5.20 cudaGetSymbolAddress .............................................................................................................. 44 1.5.21 cudaGetSymbolSize .................................................................................................................... 45 1.5.22 cudaMalloc3D ............................................................................................................................ 46 1.5.23 cudaMalloc3DArray ................................................................................................................... 48 1.5.24 cudaMemset3D ........................................................................................................................... 50 1.5.25 cudaMemcpy3D ......................................................................................................................... 52 1.6 TextureReferenceManagement RT ........................................................................................................... 54 1.6.1 LowLevelApi ............................................................................................................................... 55 1.6.2 HighLevelApi ............................................................................................................................... 63 1.7 ExecutionControl RT ............................................................................................................................... 68 1.7.1 cudaConfigureCall ........................................................................................................................ 69 1.7.2 cudaLaunch .................................................................................................................................. 70 1.7.3 cudaSetupArgument ..................................................................................................................... 71 1.8 OpenGlInteroperability RT ...................................................................................................................... 72 1.8.1 cudaGLSetGLDevice .................................................................................................................... 73 1.8.2 cudaGLRegisterBufferObject ........................................................................................................ 74 1.8.3 cudaGLMapBufferObject ............................................................................................................. 75 1.8.4 cudaGLUnmapBufferObject ......................................................................................................... 76 1.8.5 cudaGLUnregisterBufferObject .................................................................................................... 77 1.9 Direct3dInteroperability RT ..................................................................................................................... 78 1.9.1 cudaD3D9SetDirect3DDevice ....................................................................................................... 79 1.9.2 cudaD3D9GetDirect3DDevice ...................................................................................................... 80 1.9.3 cudaD3D9RegisterResource ......................................................................................................... 81 1.9.4 cudaD3D9UnregisterResource ...................................................................................................... 83 v 1.9.5 cudaD3D9MapResources ...............................................................................................................84 1.9.6 cudaD3D9UnmapResources ...........................................................................................................85 1.9.7 cudaD3D9ResourceSetMapFlags ....................................................................................................86 1.9.8 cudaD3D9ResourceGetSurfaceDimensions .....................................................................................88 1.9.9 cudaD3D9ResourceGetMappedPointer ...........................................................................................89 1.9.10 cudaD3D9ResourceGetMappedSize .............................................................................................90 1.9.11 cudaD3D9ResourceGetMappedPitch ............................................................................................91 1.9.12 cudaD3D9Begin ...........................................................................................................................92 1.9.13 cudaD3D9End ..............................................................................................................................93 1.9.14 cudaD3D9RegisterVertexBuffer ...................................................................................................94 1.9.15 cudaD3D9MapVertexBuffer .........................................................................................................95 1.9.16 cudaD3D9UnmapVertexBuffer ....................................................................................................96 1.9.17 cudaD3D9UnregisterVertexBuffer ................................................................................................97 1.9.18 cudaD3D9GetDevice ....................................................................................................................98 1.10 ErrorHandling RT ...................................................................................................................................99 1.10.1 cudaGetLastError ....................................................................................................................... 100 1.10.2 cudaGetErrorString .................................................................................................................... 102 2 DriverApiReference 103 2.1 Initialization ............................................................................................................................................ 104 2.1.1 cuInit ........................................................................................................................................... 105 2.2 DeviceManagement ................................................................................................................................. 106 2.2.1 cuDeviceComputeCapability ........................................................................................................ 107 2.2.2 cuDeviceGet ................................................................................................................................ 108 2.2.3 cuDeviceGetAttribute ................................................................................................................... 109 2.2.4 cuDeviceGetCount ....................................................................................................................... 111 2.2.5 cuDeviceGetName ....................................................................................................................... 112 2.2.6 cuDeviceGetProperties ................................................................................................................. 113 2.2.7 cuDeviceTotalMem ...................................................................................................................... 115 2.3 ContextManagement ............................................................................................................................... 116 2.3.1 cuCtxAttach ................................................................................................................................. 117 2.3.2 cuCtxCreate ................................................................................................................................. 118 2.3.3 cuCtxDetach ................................................................................................................................ 120 2.3.4 cuCtxGetDevice ........................................................................................................................... 121 v 2.3.5 cuCtxPopCurrent ......................................................................................................................... 122 2.3.6 cuCtxPushCurrent ........................................................................................................................ 123 2.3.7 cuCtxSynchronize ........................................................................................................................ 124 2.4 ModuleManagement ............................................................................................................................... 125 2.4.1 cuModuleGetFunction ................................................................................................................. 126 2.4.2 cuModuleGetGlobal .................................................................................................................... 127 2.4.3 cuModuleGetTexRef ................................................................................................................... 128 2.4.4 cuModuleLoad ............................................................................................................................ 129 2.4.5 cuModuleLoadData ..................................................................................................................... 130 2.4.6 cuModuleLoadFatBinary ............................................................................................................. 131 2.4.7 cuModuleUnload ......................................................................................................................... 132 2.5 StreamManagement ................................................................................................................................ 133 2.5.1 cuStreamCreate ........................................................................................................................... 134 2.5.2 cuStreamDestroy ......................................................................................................................... 135 2.5.3 cuStreamQuery ............................................................................................................................ 136 2.5.4 cuStreamDestroy ......................................................................................................................... 137 2.6 EventManagement .................................................................................................................................. 138 2.6.1 cuEventCreate ............................................................................................................................. 139 2.6.2 cuEventDestroy ........................................................................................................................... 140 2.6.3 cuEventElapsedTime ................................................................................................................... 141 2.6.4 cuEventQuery .............................................................................................................................. 142 2.6.5 cuEventRecord ............................................................................................................................ 143 2.6.6 cuEventSynchronize .................................................................................................................... 144 2.7 ExecutionControl .................................................................................................................................... 145 2.7.1 cuLaunch ..................................................................................................................................... 146 2.7.2 cuLaunchGrid .............................................................................................................................. 147 2.7.3 cuParamSetSize ........................................................................................................................... 148 2.7.4 cuParamSetTexRef ...................................................................................................................... 149 2.7.5 cuParamSetf ................................................................................................................................ 150 2.7.6 cuParamSeti ................................................................................................................................ 151 2.7.7 cuParamSetv ................................................................................................................................ 152 2.7.8 cuFuncSetBlockShape ................................................................................................................. 153 2.7.9 cuFuncSetSharedSize ................................................................................................................... 154 2.8 MemoryManagement .............................................................................................................................. 155 v 2.8.1 cuArrayCreate ............................................................................................................................. 156 2.8.2 cuArrayDestroy ........................................................................................................................... 158 2.8.3 cuArrayGetDescriptor .................................................................................................................. 159 2.8.4 cuMemAlloc ................................................................................................................................ 160 2.8.5 cuMemAllocHost ........................................................................................................................ 161 2.8.6 cuMemAllocPitch ........................................................................................................................ 162 2.8.7 cuMemFree ................................................................................................................................. 164 2.8.8 cuMemFreeHost .......................................................................................................................... 165 2.8.9 cuMemGetAddressRange ............................................................................................................ 166 2.8.10 cuMemGetInfo .......................................................................................................................... 167 2.8.11 cuMemcpy2D ............................................................................................................................ 168 2.8.12 cuMemcpy3D ............................................................................................................................ 171 2.8.13 cuMemcpyAtoA ........................................................................................................................ 174 2.8.14 cuMemcpyAtoD ........................................................................................................................ 175 2.8.15 cuMemcpyAtoH ........................................................................................................................ 176 2.8.16 cuMemcpyDtoA ........................................................................................................................ 177 2.8.17 cuMemcpyDtoD ........................................................................................................................ 178 2.8.18 cuMemcpyDtoH ........................................................................................................................ 179 2.8.19 cuMemcpyHtoA ........................................................................................................................ 180 2.8.20 cuMemcpyHtoD ........................................................................................................................ 181 2.8.21 cuMemset .................................................................................................................................. 182 2.8.22 cuMemset2D ............................................................................................................................. 183 2.9 TextureReferenceManagement ................................................................................................................ 184 2.9.1 cuTexRefCreate ........................................................................................................................... 185 2.9.2 cuTexRefDestroy ......................................................................................................................... 186 2.9.3 cuTexRefGetAddress ................................................................................................................... 187 2.9.4 cuTexRefGetAddressMode .......................................................................................................... 188 2.9.5 cuTexRefGetArray ...................................................................................................................... 189 2.9.6 cuTexRefGetFilterMode .............................................................................................................. 190 2.9.7 cuTexRefGetFlags ....................................................................................................................... 191 2.9.8 cuTexRefGetFormat .................................................................................................................... 192 2.9.9 cuTexRefSetAddress ................................................................................................................... 193 2.9.10 cuTexRefSetAddressMode ......................................................................................................... 194 2.9.11 cuTexRefSetArray ..................................................................................................................... 195 vii 2.9.12 cuTexRefSetFilterMode ............................................................................................................. 196 2.9.13 cuTexRefSetFlags ...................................................................................................................... 197 2.9.14 cuTexRefSetFormat .................................................................................................................... 198 2.10 OpenGlInteroperability .......................................................................................................................... 199 2.10.1 cuGLCtxCreate .......................................................................................................................... 200 2.10.2 cuGLInit .................................................................................................................................... 201 2.10.3 cuGLMapBufferObject ............................................................................................................... 202 2.10.4 cuGLRegisterBufferObject ......................................................................................................... 203 2.10.5 cuGLUnmapBufferObject .......................................................................................................... 204 2.10.6 cuGLUnregisterBufferObject ...................................................................................................... 205 2.11 Direct3dInteroperability ........................................................................................................................ 206 2.11.1 cuD3D9CtxCreate ...................................................................................................................... 207 2.11.2 cuD3D9GetDirect3DDevice ....................................................................................................... 208 2.11.3 cuD3D9RegisterResource ........................................................................................................... 209 2.11.4 cuD3D9UnregisterResource ....................................................................................................... 211 2.11.5 cuD3D9MapResources ............................................................................................................... 212 2.11.6 cuD3D9UnmapResources ........................................................................................................... 213 2.11.7 cuD3D9ResourceSetMapFlags ................................................................................................... 214 2.11.8 cuD3D9ResourceGetSurfaceDimensions .................................................................................... 215 2.11.9 cuD3D9ResourceGetMappedPointer .......................................................................................... 216 2.11.10 cuD3D9ResourceGetMappedSize ............................................................................................. 217 2.11.11 cuD3D9ResourceGetMappedPitch ............................................................................................ 218 2.11.12cuD3D9Begin ........................................................................................................................... 219 2.11.13cuD3D9End .............................................................................................................................. 220 2.11.14cuD3D9GetDevice .................................................................................................................... 221 2.11.15cuD3D9MapVertexBuffer ......................................................................................................... 222 2.11.16 cuD3D9RegisterVertexBuffer ................................................................................................... 223 2.11.17 cuD3D9UnmapVertexBuffer .................................................................................................... 224 2.11.18 cuD3D9UnregisterVertexBuffer ............................................................................................... 225 3 AtomicFunctions 226 3.1 ArithmeticFunctions ................................................................................................................................ 227 3.1.1 atomicAdd ................................................................................................................................... 228 3.1.2 atomicSub .................................................................................................................................... 229 vii 3.1.3 atomicExch ................................................................................................................................. 230 3.1.4 atomicMin ................................................................................................................................... 231 3.1.5 atomicMax .................................................................................................................................. 232 3.1.6 atomicInc .................................................................................................................................... 233 3.1.7 atomicDec ................................................................................................................................... 234 3.1.8 atomicCAS .................................................................................................................................. 235 3.2 BitwiseFunctions .................................................................................................................................... 236 3.2.1 atomicAnd ................................................................................................................................... 237 3.2.2 atomicOr ..................................................................................................................................... 238 3.2.3 atomicXor ...............................................................................................................................
cuda异步传输之cudaMemcpyAsync()和cudaMemcpy2DAsync()
qq_45241855的博客
05-18 3050
异步传输函数需要和锁页内存函数cudaHostAlloc()搭配使用，因为传递给cudaMemcpyAsync()函数的主机端指针所指内存必须已经被分配固定下来，cudaHostAlloc()申请的就是锁页内存（即内存被固定）。
CUDA中的cudaMemcpy2D和cudaMallocPitch使用详解
yujuan110的博客
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#include #include #include #define N 3 //类似数组的行 #define M 5 //类似数组的列 #define GridSize 16 #define BlockSize 16 #include using namespace std; __global__ void kernel(float * d_matrix, size_t pit
cudaMallocPitch 和 cudaMemcpy2D
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一、cudaMalloc() cudaMalloc(void** devPtr,  size_t cout); devPtr: 在显存上分配数据的头指针 cout: 分配空间的大小，以字节为单位。       在设备上分配count字节的线性内存，并返回分配内存的指针*devPtr。分配的内存适合任何类型的变量。如果分配失败，cudaMalloc()返回cudaErr
cudaMemcpy2D()和cudaMallocPitch()的使用
m0_38036750的博客
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#include "head.h" void gpuInit() { cudaSetDevice(0); size_t width = 5; size_t height = 5; float *h_data, *d_data; size_t pitch; h_data = (float*)malloc(sizeof(float)*width * height); for(int...
函数详解：cudaMemsetAsync()、cudaStreamSynchronize()和cudaMemcpyAsync()
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本文中，对cudaMemsetAsync()、cudaStreamSynchronize()和cudaMemcpyAsync()函数功能、参数进行了详细解读，并通过示例进行函数和结合使用进行了详细解读，有助于读者了解相应的异步内存操作。
CUDA：将内核执行与设备/主机memcopy重叠的实例
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CUDA：将内核执行与设备/主机memcopy重叠的实例
CUDA面内存用法总结
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12-30 4109
最近群里有网友问CUDA中2D GMEM copy的问题，昨天论坛中也有问同样问题的：copy a sub slice of source GMEM to another GMEM,下面详细介绍再不需要内核的情况下如何实现： 测试（从100x100的GMEM区域，起始索引为（25，25）的位置开始复制一块大小为50x50的子区域到目标GMEM)：src GMEM pointer : d
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