CUDA常量内存

<span style="font-size:24px;"><strong>CUDA中数值常量的使用：
</strong></span>

<span style="font-size:24px;">__device__ float devData;
float value=3.14f;
cudaMemcpyToSymbol(devData,&value,sizeof(float));</span>

<span style="font-size:24px;">cuda中常量数组的使用：</span>

<span style="font-size:24px;"><strong>__constant__ float constData[156];
float data[256];
cudaMemcpyToSymbol(constData,data,sizeof(data));
cudaMemcpyFromSymbol(data,constData,sizeof(data));</strong></span>

<span style="font-size:24px;"><strong>
</strong></span>

<span style="font-size:24px;"><strong>__device__ float *devPointer;</strong></span>

<span style="font-size:24px;"><strong>float *ptr;</strong></span>

<span style="font-size:24px;"><strong>cudaMalloc(&ptr,256*sizeof(float));</strong></span>

<span style="font-size:24px;"><strong>cudaMemcpyToSymbol(devPointer,&ptr,sizeof(ptr));</strong></span>