disable NaN checks before BLAS calls dsolve.R
argv <- commandArgs(trailingOnly = TRUE)
+if (!is.null(options("matprod")[[1]])) {
+ options(matprod = "blas")
+}
+
nfrom <- 128
nto <- 2048
nstep <- 128
@@ -19,7 +23,6 @@ if (length(argv) > 0) {
loops <- as.numeric(argv[z])
}
}
-
}
p <- Sys.getenv("OPENBLAS_LOOPS")
@@ -27,31 +30,23 @@ if (p != "") {
loops <- as.numeric(p)
}
-
-cat(sprintf(
- "From %.0f To %.0f Step=%.0f Loops=%.0f\n",
- nfrom,
- nto,
- nstep,
- loops
-))
+cat(sprintf("From %.0f To %.0f Step=%.0f Loops=%.0f\n", nfrom, nto, nstep, loops))
cat(sprintf(" SIZE Flops Time\n"))
n <- nfrom
while (n <= nto) {
- A <- matrix(rnorm(n * n), ncol = n, nrow = n)
- B <- matrix(rnorm(n * n), ncol = n, nrow = n)
+ A <- matrix(rnorm(n * n), nrow = n)
+ B <- matrix(rnorm(n * n), nrow = n)
z <- system.time(for (l in 1:loops) {
solve(A, B)
})
- mflops <-
- (2.0 / 3.0 * n * n * n + 2.0 * n * n * n) * loops / (z[3] * 1.0e6)
+ mflops <- (2.0/3 * n * n * n + 2 * n * n * n) * loops/ (z[3] * 1e6)
st <- sprintf("%.0fx%.0f :", n, n)
cat(sprintf("%20s %10.2f MFlops %10.6f sec\n", st, mflops, z[3]))
n <- n + nstep
-
}
+
