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prj-um-bilhao.qmd
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prj-um-bilhao.qmd
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# Um bilhão
Teste de velocidade do cálculo da soma de 1 até 1 bilhão, a partir do R.
```{r}
#| eval: true
#| echo: false
#| warning: false
options(scipen = 999)
knitr::knit_engines$set(julia = JuliaCall::eng_juliacall)
```
## R
```{r}
#| eval: false
#| echo: true
library(tictoc)
sum_until_r <- function(numero = 10) {
n <- 0
while (n < numero)
n <- n + 1
n
}
tictoc::tic()
sum_until_r(1000000000)
tictoc::toc()
```
> 21.264 sec elapsed
## Python from Reticulate
```{r}
#| eval: false
#| echo: true
#| warning: false
library(reticulate)
tictoc::tic()
py_run_string("
n = 0
while(n < 1000000000):
n+=1
print(n)
")
tictoc::toc()
```
> 48.923 sec elapsed
## Python
```{python}
#| eval: false
#| echo: true
# open python console in vim or rstudio
# reticulate::repl_python()
import time
def sum_until_py(numero = 10):
n = 0
while(n < numero):
n+=1
return n
tic = time.perf_counter()
sum_until_py(1000000000)
toc = time.perf_counter()
print(toc - tic, 'secs')
```
> 25.6930 secs
## Python source
```{r file = 'code/um-bilhao/um-bilhao.py', filename = 'code/um-bilhao/um-bilhao.py'}
#| eval: false
#| echo: true
```
```{r}
#| eval: false
#| echo: true
#| warning: false
reticulate::source_python('code/um-bilhao/um-bilhao.py')
tictoc::tic()
sum_until_py(1000000000)
tictoc::toc()
```
> 37.102 sec elapsed
## Julia from JuliaCall
```{r}
#| eval: false
#| echo: true
#| warning: false
library(JuliaCall)
julia <- julia_setup()
julia_command("
function sum_until_jl(numero)
i = 0
while i <= numero
i += 1
end
end", show_value = F)
tictoc::tic()
julia_command("sum_until_jl(1000000000)")
tictoc::toc()
```
> 0.001 sec elapsed
## Julia
```{julia}
#| eval: false
#| echo: true
#| warning: false
# open julia console in vim or rstudio
# julia_console()
@time begin
njl = 0;
while njl <= 1000000000
global njl += 1
end
end
```
> 272.569 seconds (1000.00 M allocations: 14.901 GiB, 0.15% gc time)
## Julia source
```{r file = 'code/um-bilhao/um-bilhao.jl', filename = 'code/um-bilhao/um-bilhao.jl'}
#| eval: false
#| echo: true
#| warning: false
```
```{r}
#| eval: false
#| echo: true
#| warning: false
julia_source('code/um-bilhao/um-bilhao.jl')
tictoc::tic()
julia_call('sum_until_jl', 1000000000)
tictoc::toc()
```
> 1.158 sec elapsed
## C++ via Rcpp
```{r}
#| eval: false
#| echo: true
library(Rcpp)
cppFunction("
int sum_until_cpp(int numero) {
int n = 0;
while (n < numero)
n++;
return n;
}
")
tictoc::tic()
sum_until_cpp(1000000000)
tictoc::toc()
```
> 0.001 sec elapsed
## C++ via Rcpp source
```{r file = 'code/um-bilhao/um-bilhao.cpp', filename = 'code/um-bilhao/um-bilhao.cpp'}
#| eval: false
#| echo: true
#| code-fold: show
```
```{r}
#| eval: false
#| echo: true
#| code-fold: show
sourceCpp('code/um-bilhao/um-bilhao.cpp')
tictoc::tic()
sum_until_v2_cpp(1000000000)
tictoc::toc()
```
> 0.001 sec elapsed