do you know how to increase the optimization level of gcc in R?
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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
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
Could you tell me a little more in details?
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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.
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!
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I wonder how to further improve the optimization level of gcc. I thought
O-3 has already been the best.
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the efficiency of
DLL compiled by gcc compiler in R. Thanks in advance!
Xin
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Charlie Sharpsteen
Undergraduate-- Environmental Resources Engineering
Humboldt State University
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compiler to
generate DLL for R. Could you give me some suggestions? Thanks a lot!
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I am using 32-bit Window XP.
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