I have two CUDA kernels that compute similar stuff. One is using global memory (myfunis a device function that reads a lot from global memory and do the computation). The second kernel transfers that chunk of data from global memory to shared memory so the data can be shared among differen...
cudaMalloc(&d_A.elements, size); cudaMemcpy(d_A.elements, A.elements, size, cudaMemcpyHostToDevice); Matrix d_B; d_B.width = B.width; d_B.height = B.height; size = B.width * B.height * sizeof(float); cudaMalloc(&d_B.elements, size); cudaMemcpy(d_B.elements, B.elements,...
i.e. there is a notion of processing one wavefront per cycle in L1TEX. Wavefronts therefore represent the number of cycles required to process the requests, while the number of sectors per request is a property of theaccess patternof the memory instruction for all participating threads. For ...
registered it can be used in the “shared_memory_region” parameter for an input or output tensor. Errors are indicated by the google.rpc.Status returned for the request. The OK code indicates success and other codes indicate failure. The request and response messages for CudaSharedMemory...
共享内存(shared memory)是位于SM上的on-chip(片上)一块内存,每个SM都有,就是内存比较小,早期的GPU只有16K(16384),现在生产的GPU一般都是48K(49152)。 共享内存由于是片上内存,因而带宽高,延迟小(较全局内存而言),合理使用共享内存对程序效率具有很大提升。
共享内存(shared memory)是位于SM上的on-chip(片上)一块内存,每个SM都有,就是内存比较小,早期的GPU只有16K(16384),现在生产的GPU一般都是48K(49152)。 共享内存由于是片上内存,因而带宽高,延迟小(较全局内存而言),合理使用共享内存对程序效率具有很大提升。
在CUDA中,shared memory(共享内存)是一种特殊的硬件内存,它位于GPU的同步多处理器(SM)上,被多个线程块共享使用。Shared memory的使用对于提高CUDA程序的性能非常重要。本文将深入探讨shared memory的好处,并逐步回答关于shared memory的相关问题。 一、Shared memory的工作原理 在理解shared memory的好处之前,先来了解一...
Shared Memory Example Declare shared memory in CUDA C/C++ device code using the __shared__ variable declaration specifier. There are multiple ways to declare shared memory inside a kernel, depending on whether the amount of memory is known at compile time or at run time. The following complete...
http://cuda-programming.blogspot.com/2013/02/bank-conflicts-in-shared-memory-in-cuda.html 我这里重点不在bank conflict,而是主要讨论shared memory和 memory bank的对应关系。 文中有这么一段描述: Example Scenario Let’ssay we have an array of size 256 of integer type in global memory and we have...
CUDA中的Shared Memory是一种特殊的内存类型,具有以下几个优点: 高带宽:Shared Memory的传输速度非常快,通常比全局内存快一到两个数量级。这是因为Shared Memory位于SM(Streaming Multiprocessor)内部,通过SM内的高速缓存连接到核心处理器,可以显著减少数据传输的延迟。 低延迟:Shared Memory的读写延迟非常低,可以在同一...