__shfl_xor_sync(),按照nv的说明,其作用是在一个warp内进行通信,将laneIndex指向的thread内的数据返回给当前thread,那么很自然就可以将其用作一个warp内的归约操作,且其具有蝶式通信的特征,如果你需要将归约结果让所有thread共享,那么__shfl_xor_sync相较于其他两个原语效果更好,因为它可以省去一个广播通信的...
__shfl_up_sync, __shfl_down_sync, and __shfl_xor_sync exchange a variable between threads wi...
Before submitting a bug, please make sure the issue hasn't been already addressed by searching through the FAQs and existing/past issues Describe the bug <Please provide a clear and concise description of what the bug is. If relevant, pl...
网格, 线程块与线程到实际问题如何映射 硬件处理器多层次结构 GPU 多层次内存: 寄存器, 高速缓存, 共享内存, 全局内存 全局内存如何管理 共享内存如何使用 规约算法 合作组 (Cooperative Groups) 课程简介 本课程介绍NVIDIA GPU 计算的基本知识, 例如 NVIDIA GPU 计算核心架构, 内存架构, 内存模型和执行模型. 在接...
returnutils::ballotSync(mask, pred); } intompx_shfl_down_sync_i(uint64_tmask,intvar,unsigneddelta,intwidth) { returnutils::shuffleDown(mask, var, delta, width); } floatompx_shfl_down_sync_f(uint64_tmask,floatvar,unsigneddelta,
Motivation This is follow up of PR#3664 Modifications enable shlf_xor_sync enable flashinfer vec_t (should be removed once flashinfer-rocm [POC] fully finished) Checklist Format your code acc...
Build issue /build/precommit_custom_linux/4.x/opencv_contrib/modules/cudaimgproc/src/cuda/moments.cu(19): error: identifier "__shfl_xor_sync" is undefined detected during: instantiation of "T cv::cuda::device::imgproc::butterflyWarpReduction(T) [with T=float]" (101): here instantiation...
returnutils::ballotSync(mask, pred); } intompx_shfl_down_sync_i(uint64_tmask,intvar,unsigneddelta,intwidth) { returnutils::shuffleDown(mask, var, delta, width); } floatompx_shfl_down_sync_f(uint64_tmask,floatvar,unsigneddelta,