mirror of
https://github.com/andre-wojtowicz/blas-benchmarks
synced 2024-11-22 06:45:28 +01:00
35 lines
736 B
R
35 lines
736 B
R
# source: https://gist.github.com/andrie/24c9672f1ea39af89c66#file-rro-mkl-benchmark-r
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# Initialization
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set.seed (1)
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m <- 10000
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n <- 5000
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A <- matrix (runif (m*n),m,n)
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# Matrix multiply
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system.time (B <- crossprod(A))
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# Cholesky Factorization
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system.time (C <- chol(B))
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# Singular Value Deomposition
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m <- 10000
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n <- 2000
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A <- matrix (runif (m*n),m,n)
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system.time (S <- svd (A,nu=0,nv=0))
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# Principal Components Analysis
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m <- 10000
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n <- 2000
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A <- matrix (runif (m*n),m,n)
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system.time (P <- prcomp(A))
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# Linear Discriminant Analysis
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library('MASS')
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g <- 5
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k <- round (m/2)
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A <- data.frame (A, fac=sample (LETTERS[1:g],m,replace=TRUE))
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train <- sample(1:m, k)
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system.time (L <- lda(fac ~., data=A, prior=rep(1,g)/g, subset=train))
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