From 438a889c37ffdf8f0c6585092da6abdb63b4575e Mon Sep 17 00:00:00 2001 From: Johannes Ranke Date: Tue, 30 Jun 2015 14:17:13 +0200 Subject: Improve calculation of DT90 in endpoints(), check and test --- vignettes/FOCUS_Z.pdf | Bin 225060 -> 219834 bytes vignettes/compiled_models.Rmd | 101 ------------------------------------------ 2 files changed, 101 deletions(-) delete mode 100644 vignettes/compiled_models.Rmd (limited to 'vignettes') diff --git a/vignettes/FOCUS_Z.pdf b/vignettes/FOCUS_Z.pdf index 8b8f7416..3fb4f69c 100644 Binary files a/vignettes/FOCUS_Z.pdf and b/vignettes/FOCUS_Z.pdf differ diff --git a/vignettes/compiled_models.Rmd b/vignettes/compiled_models.Rmd deleted file mode 100644 index 8dc74692..00000000 --- a/vignettes/compiled_models.Rmd +++ /dev/null @@ -1,101 +0,0 @@ ---- -title: "Performance benefit by using compiled model definitions in mkin" -author: "Johannes Ranke" -date: "`r Sys.Date()`" -output: - html_document: - css: mkin_vignettes.css - toc: true - mathjax: null - theme: united -vignette: > - %\VignetteIndexEntry{Performance benefit by using compiled model definitions in mkin} - %\VignetteEngine{knitr::rmarkdown} - \usepackage[utf8]{inputenc} ---- - -```{r, include = FALSE} -library(knitr) -opts_chunk$set(tidy = FALSE, cache = TRUE) -``` - -## Benchmark for a model that can also be solved with Eigenvalues - -This evaluation is taken from the example section of mkinfit. When using an mkin version -equal to or greater than 0.9-36 and a C compiler (gcc) is available, you will see -a message that the model is being compiled from autogenerated C code when -defining a model using mkinmod. The `mkinmod()` function checks for presence of -the gcc compiler using - -```{r check_gcc} -Sys.which("gcc") -``` -First, we build a simple degradation model for a parent compound with one metabolite. - -```{r create_SFO_SFO} -library("mkin") -SFO_SFO <- mkinmod( - parent = mkinsub("SFO", "m1"), - m1 = mkinsub("SFO")) -``` - -We can compare the performance of the Eigenvalue based solution against the -compiled version and the R implementation of the differential equations using -the microbenchmark package. - - -```{r benchmark_SFO_SFO} -library("microbenchmark") -mb.1 <- microbenchmark( - mkinfit(SFO_SFO, FOCUS_2006_D, solution_type = "deSolve", use_compiled = FALSE, - quiet = TRUE), - mkinfit(SFO_SFO, FOCUS_2006_D, solution_type = "eigen", quiet = TRUE), - mkinfit(SFO_SFO, FOCUS_2006_D, solution_type = "deSolve", quiet = TRUE), - times = 3, control = list(warmup = 1)) -smb.1 <- summary(mb.1)[-1] -rownames(smb.1) <- c("deSolve, not compiled", "Eigenvalue based", "deSolve, compiled") -print(smb.1) -``` - -We see that using the compiled model is by a factor of -`r round(smb.1["deSolve, not compiled", "median"]/smb.1["deSolve, compiled", "median"], 1)` -faster than using the R version with the default ode solver, and it is even -faster than the Eigenvalue based solution implemented in R which does not need -iterative solution of the ODEs: - -```{r} -smb.1["median"]/smb.1["deSolve, compiled", "median"] -``` - -## Benchmark for a model that can not be solved with Eigenvalues - -This evaluation is also taken from the example section of mkinfit. - -```{r benchmark_FOMC_SFO} -FOMC_SFO <- mkinmod( - parent = mkinsub("FOMC", "m1"), - m1 = mkinsub( "SFO")) - -mb.2 <- microbenchmark( - mkinfit(FOMC_SFO, FOCUS_2006_D, use_compiled = FALSE, quiet = TRUE), - mkinfit(FOMC_SFO, FOCUS_2006_D, quiet = TRUE), - times = 3, control = list(warmup = 1)) -smb.2 <- summary(mb.2)[-1] -rownames(smb.2) <- c("deSolve, not compiled", "deSolve, compiled") -print(smb.2) -smb.2["median"]/smb.2["deSolve, compiled", "median"] -``` - -Here we get a performance benefit of a factor of -`r round(smb.2["deSolve, not compiled", "median"]/smb.2["deSolve, compiled", "median"], 1)` -using the version of the differential equation model compiled from C code using -the inline package! - -This vignette was built with mkin `r packageVersion("mkin")` on - -```{r sessionInfo, echo = FALSE} -cat(capture.output(sessionInfo())[1:3], sep = "\n") -if(!inherits(try(cpuinfo <- readLines("/proc/cpuinfo")), "try-error")) { - cat(gsub("model name\t: ", "CPU model: ", cpuinfo[grep("model name", cpuinfo)[1]])) -} -``` -- cgit v1.2.1