R help - Apr 2002 - trouble with tcltk (was RE: trouble compiling R on Irix )

Thanks to Peter Dalgaard and Suchandra Thapa for answering my question!

Before I settle on a particular option, I'd like to ask one more question if
I may: Are there any practical advantages to compiling R to 64-bit vs
32-bit?

Regards,
Andy
> -----Original Message-----
> From: Peter Dalgaard BSA [mailto:p.dalgaard at biostat.ku.dk]
> Sent: Thursday, April 18, 2002 4:19 PM
> To: Liaw, Andy
> Cc: 'R-help at stat.math.ethz.ch'
> Subject: Re: trouble with tcltk (was RE: [R] trouble 
> compiling R on Irix
> )
> 
> 
> "Liaw, Andy" <andy_liaw at merck.com> writes:
> 
> > Hi,
> > 
> > Thanks to Profs. Ripley and Tierney for their tips, I 
> compiled zlib from
> > source and gotten further.
> > 
> > Here's where I get stuck, when it tries to compile the 
> tcltk package:
> > 
> > ld32: FATAL   12 : Expecting n32 objects: 
> /usr/local/lib/libtcl8.3.so is
> > n64.
> > 
> > Now I'm confused.  Sounds like 32-bit vs. 64-bit problem.  
> What can I do at
> > this point?
> > 
> > (This is on Irix.)
> 
> Well, there seems to be three options:
> 
> 1) Build without tcltk (configure --without-tcltk)
> 
> 2) get a 32-bit tcltk
> 
> 3) compile everything else for 64 bits
> 
> -- 
>    O__  ---- Peter Dalgaard             Blegdamsvej 3  
>   c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
>  (*) \(*) -- University of Copenhagen   Denmark      Ph: 
> (+45) 35327918
> ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: 
> (+45) 35327907
> 
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On Fri, Apr 19, 2002 at 09:11:12AM -0400, Liaw, Andy
wrote:
> Before I settle on a particular option, I'd like to ask one more
question if
> I may: Are there any practical advantages to compiling R to 64-bit vs
> 32-bit?
    If you compile R as a 64 bit application you should be able to address more
than 4GB of ram, but I'm not sure if R will support this. Also 32bit 
applications will run a bit faster since their pointers are smaller and thus
more information can be kept on cpu caches.  The difference isn't that big 
however (I think it's about 5% or so).

-- 
------------------------------------------------------------------

Suchandra S. Thapa 
s-thapa-11 at alumni.uchicago.edu

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