所以 CUDA 会默认将一个 warp 拆分为两个 half warp，每个 half warp 产生一次 memory transaction。即...
CUDA 数组支持的 16 位浮点或 half 格式与 IEEE 754-2008 binary2 格式相同。 CUDA C++ 不支持匹配的数据类型,但提供了通过 unsigned short 类型与 32 位浮点格式相互转换的内在函数:__float2half_rn(float) 和__half2float(unsigned short)。 这些功能仅在设备代码中受支持。 例如,主机代码的等效函数可以在 ...
3 channel signed half-float block-compressed (BC6H compression) format cudaChannelFormatKindUnsignedBlockCompressed7 = 29 4 channel unsigned normalized block-compressed (BC7 compression) format cudaChannelFormatKindUnsignedBlockCompressed7SRGB = 30 4 channel unsigned normalized block-compressed (BC7 com...
This tool will help you to convert your program from the version usingfloattohalfandhalf2. It is written in Clang libtooling (version 4.0) because that is the only option I can find to parse CUDA code easily for now. All contribution and pull requests are welcome. ...
In a nutshell, Tesla P100 provides massive double-, single- and half-precision computational performance, 3x the memory bandwidth of Maxwell GPUs via HBM2 stacked memory, and with its support for NVLink, up to 5x the GPU-GPU communication performance of PCI Express. Pascal also improves support...
// Matrix dimensions are assumed to be multiples of BLOCK_SIZE void MatMul(const Matrix A, const Matrix B, Matrix C) { // Load A and B to device memory Matrix d_A; d_A.width = A.width; d_A.height = A.height; size_t size = A.width * A.height * sizeof(float); ...
THNN_CudaHalfVolumetricFullConvolution_accGradParameters...me/alexander/torch/install/share/lua/5.1/nn/THNN.lua:108: NYI: call arg type model_opt { model_foveal_exclude : -1 model_conv345_norm : true model_het : true } Warning: Failed to load function from bytecode: binary string: bad ...
而从8-bit或者16-bit或者其他整数类型转换成float的时候, 吞吐率就只有16条/SM/周期了, 相当于在7.X上转换本身只有常规计算的1/4的性能. 甚至这点在8.6上更加糟糕, 因为8.6的双倍速的float运算, 导致如果你读取一个普通的8-bit或者16-bit整数(u)int8/16_t, 然后进行一次手工到float的转换, 相当于大约等...
当处理常量内存时,NVIDIA硬件将把单次内存读取操作广播到每个半线程束(Half-Warp)。在半线程束中包含16个线程,即线程束中线程数量的一半。如果在半线程束中的每个线程从常量内存的相同地址上读取数据,那么GPU只会产生一次读取请求并在随后将数据广播到每个线程。如果从常量内存中读取大量数据,那么这种方式产生的内存流...
Better accuracy of cusparseAxpby, cusparseRot, cusparseSpVV for bfloat16 and half regular/complex data types. All routines support NVTX annotation for enhancing the profiler time line on complex applications. Resolved Issues cusparseAxpby, cusparseGather, cusparseScatter, cusparseRot, cusparseSpVV,...