Gavin Simpson wrote: > On Wed, 2005-07-06 at 19:54 +0100, Gavin Simpson wrote: > >>Dear List, >> > > > I fixed up the code in coinertiaI to only return the bits I needed from > La.svd() within the permutations - thus producing a 10% speed up. I am > still a little unclear about the results from Rprof() (below). > > Do the timings under self time for .Call and .Fortran include the time > spent actually running the called compiled code or are they the overhead > of setting up the calls to the compiled code?
They include both. The profiler only sees R calls, it doesn't know what goes on within functions. .Call() is an R call which internally calls some C function, but the profiler just sees the call to .Call. Duncan Murdoch > > Many thanks, > > Gav > > >>summaryRprof(filename = "Rprof.out") >>$by.self >> self.time self.pct total.time total.pct >>".Call" 50.40 59.6 50.40 59.6 >>"%*%" 10.50 12.4 10.50 12.4 >>".Fortran" 2.78 3.3 2.78 3.3 >>"La.svd" 2.52 3.0 57.98 68.6 >>"^" 2.48 2.9 2.48 2.9 >>"t.default" 2.30 2.7 2.30 2.7 >>"matrix" 1.92 2.3 1.98 2.3 >>"as.double" 1.78 2.1 2.70 3.2 >>"list" 0.88 1.0 0.88 1.0 >>"as.double.default" 0.86 1.0 0.86 1.0 >>"rep.default" 0.74 0.9 0.86 1.0 >>"sum" 0.72 0.9 2.58 3.1 >>"!" 0.50 0.6 0.50 0.6 >>"diag" 0.44 0.5 1.46 1.7 >>"qr.coef" 0.42 0.5 6.26 7.4 >>"permtest" 0.38 0.4 83.60 98.9 >>"is.finite" 0.38 0.4 0.38 0.4 >>"storage.mode<-" 0.36 0.4 3.26 3.9 >>"as.integer" 0.34 0.4 0.40 0.5 >>"t" 0.32 0.4 2.62 3.1 >>"$" 0.32 0.4 0.32 0.4 >>"paste" 0.28 0.3 0.54 0.6 >>"teststat" 0.24 0.3 83.10 98.3 >>"residualMatrix" 0.22 0.3 10.32 12.2 >>"qr" 0.20 0.2 1.24 1.5 >>... >> >>$by.total >> total.time total.pct self.time self.pct >>"predcoca.perm" 84.50 100.0 0.00 0.0 >>"permtest" 83.60 98.9 0.38 0.4 >>"teststat" 83.10 98.3 0.24 0.3 >>"coinertiaI" 73.24 86.7 0.18 0.2 >>"La.svd" 57.98 68.6 2.52 3.0 >>".Call" 50.40 59.6 50.40 59.6 >>"%*%" 10.50 12.4 10.50 12.4 >>"residualMatrix" 10.32 12.2 0.22 0.3 >>"qr.coef" 6.26 7.4 0.42 0.5 >>"storage.mode<-" 3.26 3.9 0.36 0.4 >>".Fortran" 2.78 3.3 2.78 3.3 >>"as.double" 2.70 3.2 1.78 2.1 >>"t" 2.62 3.1 0.32 0.4 >>"eval" 2.62 3.1 0.14 0.2 >>"sum" 2.58 3.1 0.72 0.9 >>... >> ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
