mirror of
https://github.com/andre-wojtowicz/blas-benchmarks
synced 2024-07-22 17:50:29 +02:00
35 lines
736 B
R
35 lines
736 B
R
# source: https://gist.github.com/andrie/24c9672f1ea39af89c66#file-rro-mkl-benchmark-r
|
|
|
|
# Initialization
|
|
|
|
set.seed (1)
|
|
m <- 10000
|
|
n <- 5000
|
|
A <- matrix (runif (m*n),m,n)
|
|
|
|
# Matrix multiply
|
|
system.time (B <- crossprod(A))
|
|
|
|
# Cholesky Factorization
|
|
system.time (C <- chol(B))
|
|
|
|
# Singular Value Deomposition
|
|
m <- 10000
|
|
n <- 2000
|
|
A <- matrix (runif (m*n),m,n)
|
|
system.time (S <- svd (A,nu=0,nv=0))
|
|
|
|
# Principal Components Analysis
|
|
m <- 10000
|
|
n <- 2000
|
|
A <- matrix (runif (m*n),m,n)
|
|
system.time (P <- prcomp(A))
|
|
|
|
# Linear Discriminant Analysis
|
|
library('MASS')
|
|
g <- 5
|
|
k <- round (m/2)
|
|
A <- data.frame (A, fac=sample (LETTERS[1:g],m,replace=TRUE))
|
|
train <- sample(1:m, k)
|
|
system.time (L <- lda(fac ~., data=A, prior=rep(1,g)/g, subset=train))
|