gergpu: gergpu

In yuanli22/RCUDA: GPU Enabled BLAS, LAPACK, Statistical Functions and Random Number Generators

Description

This function perform the the rank-1 update A = a x y T + A, by using CUDA cublas function cublasDger

Usage

gergpu(alpha = 1, x, y, A)

Arguments

alpha	scale factor a of matrix A; default 1
x	input vector; list of R external GPU pointer and dimension
y	input vector; list of R external GPU pointer and dimension
A	input/output matrix; list of R external GPU pointer and dimension

Value

updated matrix A, a list consisting of

• ptr: GPU pointer

• m: matrix A's number of rows

• n: matrix A's number of columns

See Also

gemvgpu

Examples

A <- 1:12
x <- 1:3
y <- 1:4
A_gpu <- creategpu(A, 3, 4)
x_gpu <- creategpu(x)
y_gpu <- creategpu(y)
gergpu(1,x_gpu, y_gpu, A_gpu)
gathergpu(A_gpu)

yuanli22/RCUDA documentation built on May 4, 2019, 6:35 p.m.