Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-19 Thread yehengxin
do you know how to increase the optimization level of gcc in R? -- View this message in context: http://n4.nabble.com/Efficiency-of-C-Compiler-in-R-CMD-SHLIB-tp1934429p2016646.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-18 Thread Uwe Ligges
On 16.04.2010 16:54, yehengxin wrote: I wonder how to further improve the optimization level of gcc. I thought O-3 has already been the best. If you want to incerease that, don't forget to run checks in order not to get numerical inaccuracies. Uwe Ligges

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-18 Thread Uwe Ligges
Please see the manuals On 16.04.2010 16:11, yehengxin wrote: Thank you very much for your kind explanation. I did find my DLL compiled using either VC++ 6.0 or Intel Compiler (almost equally fast) is significanlty faster than that compiled using gcc (55 seconds vs. 78 seconds), the default

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-18 Thread yehengxin
Could you tell me a little more in details? -- View this message in context: http://n4.nabble.com/Efficiency-of-C-Compiler-in-R-CMD-SHLIB-tp1934429p2015006.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-16 Thread Prof Brian Ripley
Since the context is missing in this message, from others this is about 32-bit Windows. On Thu, 15 Apr 2010, yehengxin wrote: Thanks for your response. I found the folder to modify the compiler for C source codes. C++ 6.0 is an old C programming environment (1994~1998) but it is efficient.

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-16 Thread yehengxin
suppose it generates released version of DLL. I just wonder how to switch to using ICC or VC++ 6.0' compiler in R CMD SHLIB. Could you give me some advice? Thanks! -- View this message in context: http://n4.nabble.com/Efficiency-of-C-Compiler-in-R-CMD-SHLIB-tp1934429p2004312.html Sent from the R

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-16 Thread yehengxin
I wonder how to further improve the optimization level of gcc. I thought O-3 has already been the best. -- View this message in context: http://n4.nabble.com/Efficiency-of-C-Compiler-in-R-CMD-SHLIB-tp1934429p2008994.html Sent from the R help mailing list archive at Nabble.com

[R] Efficiency of C Compiler in R CMD SHLIB

2010-04-15 Thread yehengxin
the efficiency of DLL compiled by gcc compiler in R. Thanks in advance! Xin -- View this message in context: http://n4.nabble.com/Efficiency-of-C-Compiler-in-R-CMD-SHLIB-tp1934429p1934429.html Sent from the R help mailing list archive at Nabble.com. __ R

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-15 Thread Sharpie
- Charlie Sharpsteen Undergraduate-- Environmental Resources Engineering Humboldt State University -- View this message in context: http://n4.nabble.com/Efficiency-of-C-Compiler-in-R-CMD-SHLIB-tp1934429p1934478.html Sent from the R help mailing list archive at Nabble.com

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-15 Thread yehengxin
compiler to generate DLL for R. Could you give me some suggestions? Thanks a lot! -- View this message in context: http://n4.nabble.com/Efficiency-of-C-Compiler-in-R-CMD-SHLIB-tp1934429p1934485.html Sent from the R help mailing list archive at Nabble.com

Re: [R] Efficiency of C Compiler in R CMD SHLIB

2010-04-15 Thread yehengxin
I am using 32-bit Window XP. -- View this message in context: http://n4.nabble.com/Efficiency-of-C-Compiler-in-R-CMD-SHLIB-tp1934429p1934486.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https