Dear Cutts and Prof. Ripley, On Fri, Jun 18, 2004 at 09:11:42AM +0100, Prof Brian Ripley wrote: Some benchmarks show icc is faster than gcc and pgcc. Even fortran compiler ifort is also faster than pgf77 (See the result on www.polyhedron.com). But I still recommend gcc and g77 as c and fortran compilers if you are on X86 Linux platforms. I once compiled R 1.9.0 by icc and ifort. It failed some of the checks. I also found that the difference between the speed of gcc+g77 and icc+ifort was not significant when I 'make test-Gct'. My platform Gentoo Linux pentium4 1.5GHz, 256M RAM and kernel 2.4.26. gcc version 3.3 icc and ifort version 8.0 non-commercial version.
BTW, can you tell me the flags you used to compile R by pgcc and pgf77. Thank you. Jin > What OS and hardware is this? Eventually you mention `X86 Linux' but are > you using x86 Linux and if so how fast processors? On a 3GHz machine make > check takes a couple of minutes using gcc (and in our experience Portland > Group is faster than gcc -- we have not tried Intel as local advice > suggests it is slower than PG). > > Which version of R? R 1.9.0 does this with gcc 3.4.0 on Linux ix86, at > the first use of LAPACK. So if you are not trying 1.9.1beta (to be > released on Monday), please do so. After that, make check does give > output so where exactly does it hang, and if you interrupt that check, how > far has it got in the output file? > > On Fri, 18 Jun 2004, Tim Cutts wrote: > > > > > Hi, > > > > I'm a sysadmin who's been tasked with installing R on our 1000-node > > compute cluster. > > I have licences for the Intel C and FORTRAN compilers, so I'm using the > > following to compile: > > > > CFLAGS="-O2 -axWK" > > FFLAGS=$CFLAGS > > CXXFLAGS=$CFLAGS > > > > CC=icc > > F77=ifort > > CXX=icc > > > > FPICFLAGS=-fpic > > > > ./configure --without-x --without-tcltk > > > > The compilation seems to go OK, with a few warnings. What concerns me > > is when I run the make check - how long should this take? I've had one > > running for over 12 hours now, and it's still on: > > > > running code in 'base-Ex.R' ... > > > > and hasn't produced any output since; it just sits there burning CPU. > > I guess my question is: I'm sure someone has successfully compiled R > > on X86 Linux using the Intel compilers before - what options did you > > use to make it work? > > Did you search the archives? I found a lot of hits, none recent for ix86 > Linux. > > > And how long should this check phase take? > > -- > Brian D. Ripley, [EMAIL PROTECTED] > Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ > University of Oxford, Tel: +44 1865 272861 (self) > 1 South Parks Road, +44 1865 272866 (PA) > Oxford OX1 3TG, UK Fax: +44 1865 272595 > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
