Nothing
library(gpuR)
context("Switching GPUs vclMatrix Correlations")
if(detectGPUs() >= 1){
current_context <- set_device_context("gpu")
}else{
current_context <- currentContext()
}
# set seed
set.seed(123)
ORDER_X <- 4
ORDER_Y <- 5
# Base R objects
A <- matrix(rnorm(ORDER_X*ORDER_Y), nrow=ORDER_X, ncol=ORDER_Y)
C <- cov(A)
test_that("Switching GPUs vclMatrix Single Precision Pearson Covariance",
{
has_multiple_gpu_skip()
setContext(2L)
fgpuX <- vclMatrix(A, type="float")
setContext(1L)
gpuC <- cov(fgpuX)
expect_is(gpuC, "fvclMatrix")
expect_equal(gpuC[], C, tolerance=1e-06,
info="float covariance values not equivalent")
expect_equal(gpuC@.context_index, 2L,
info = "context index hasn't been assigned correctly")
expect_equal(currentContext(), 1L,
info = "context index has been change unintentionally")
})
test_that("Switching GPUs vclMatrix Double Precision Pearson Covariance",
{
has_multiple_gpu_skip()
has_multiple_double_skip()
setContext(2L)
dgpuX <- vclMatrix(A, type="double")
setContext(1L)
gpuC <- cov(dgpuX)
expect_is(gpuC, "dvclMatrix")
expect_equal(gpuC[], C, tolerance=.Machine$double.eps ^ 0.5,
info="double covariance values not equivalent")
expect_equal(gpuC@.context_index, 2L,
info = "context index hasn't been assigned correctly")
expect_equal(currentContext(), 1L,
info = "context index has been change unintentionally")
})
setContext(current_context)
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