Thanks for the tips, Roger. fyi: When I added /3GB to the boot.ini, the resulting desktop was incomplete and locked - no chance to try starting R. Searching the web lead me to believe that this was possibly a dead-end, so I abandoned this effort. Any hints on getting this to work, anyone?
On 7 Mar 2007 at 8:26, Bos, Roger wrote: > David, > > I wouldn't give up on windows so fast. Many people have gotten the 3Gb > switch to work. One used to have to modify the header of the Rgui.exe > program to use the switch, but now the binary comes ready for that, so > its really quite easy. I would like to hear more about why its not > working for you. > > As for Linux, I use FC5 for which there is a 64-bit binary. But there > are also 64-bit binaries for other distros. The 32-bit and 64-bit > binaries are in different directories, so you should have no trouble > telling them apart. > > I have heard good things about Ubuntu--mainly that its very easy to > use--but FC5 has been pretty easy to learn too and I use the KDE desktop > which gives me Kate as a text editor. You can open a terminal window in > Kate to run R and set up a key like F10 to send the code from the editor > to R. Its not quite as good as my Windows setup with Tinn-R, but almost > as good. > > Thanks, > > Roger > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > Sent: Tuesday, March 06, 2007 5:37 PM > To: Bos, Roger > Subject: RE: [R] Memory Limits in Ubuntu Linux > > Thanks for your prompt reply! > > The windows 3GB switch is quite problematic - it was not useable on my > machine, and there are comments about these problems around the net. > Thus, on to Linux. My machine has 4Gig, and some megabytes are grabbed > by my Asus motherboard, leaving some 3.56 Gig. > > So if I understand your suggestion, try the 64-bit version of Ubuntu > (based on Debian but I had better luck with the video part of the > install) and then use the corresponding image from CRAN. My fear is that > the CRAN Ubuntu version might be 32-bit - any idea how to find out > before I embark on another install? Which Linux do you have - you > described some significant success with getting large jobs to run. > > And yes, I've worked hard to save memory by tweaking the code. > > > Thanks again. > > > On 6 Mar 2007 at 16:51, Bos, Roger wrote: > > > David, > > > > First of all, under Windows you can get about 3GB available to R by > > using the /3Gb switch in your boot.ini file, assuming you have 4Gb of > > memory installed on your windows machine. Using that method, I have > > seen the memory using of my R process get as big as 2.7Gb in task > > manager. What's important, of course, is contiguous space, as you > > mentioned. There, you may want to check your code closely and make > > sure that its memory usage is as efficient as possible and you are > > storing the minimal amount you need for each run. If you don't need > > an object for a while consider writing it to disk and reading it back > in later. > > > > Second, AFAIK to get any benefit from more memory is Linux you have to > > > go to the 64bit version. I am a Linux newbie too, so I choose to use > > one of the pre-compiled binaries available on CRAN. In other words, > > you shouldn't have to compile anything yourself. How much memory do > > you have on your Linux box? I have 16Gb and I know I have ran stuff > > that wouldn't run on my 4Gb windows box. > > > > HTH, > > > > Roger > > > > > > > > > > > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > [EMAIL PROTECTED] > > Sent: Tuesday, March 06, 2007 3:44 PM > > To: r-help@stat.math.ethz.ch > > Subject: [R] Memory Limits in Ubuntu Linux > > > > I am an R user trying to get around the 2Gig memory limit in Windows, > > so here I am days later with a working Ubuntu, and R under Ubuntu. But > > > - the memory problems seem worse than ever. R code that worked under > > windows fails, unable to allocate memory. > > > > Searching around the web, it appears that the problem may be the > > ability to find contguous memory for my big vectors, but a fresh boot > > of Ubuntu does not help either. > > > > Which way to go? > > > > 1) Try to install 64-bit version for bigger address space. Would this > > help? Is this workable for my Athlon 64 Dual-core? (the live cd seems > > to work but I never got it to boot after a disk install, but then the > > 386 version was no better until I learned more about Grub...I could > > try again if this might solve the > > problem) > > > > 2) Recompile R to get bigger memory capability? (I'll have to > > cross-post to some R forums too) This will be a challenge for a Linux > > newbie...like me. > > > > 3) Any other suggestions? My goal is to create a bigger neural network > > > than fits in my Windows R version. > > -- > > David Katz > > www.davidkatzconsulting.com > > 541 482-1137 > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@stat.math.ethz.ch mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > > > ********************************************************************** > > > * This message is for the named person's use only. It may contain > > confidential, proprietary or legally privileged information. No right > > to confidential or privileged treatment of this message is waived or > > lost by any error in transmission. If you have received this message > > in error, please immediately notify the sender by e-mail, delete the > > message and all copies from your system and destroy any hard copies. > > You must not, directly or indirectly, use, disclose, distribute, print > > > or copy any part of this message if you are not the intended > > recipient. > > ********************************************************************** > > > > -- > David Katz > www.davidkatzconsulting.com > > > ********************************************************************** * > This message is for the named person's use only. It may > contain confidential, proprietary or legally privileged > information. No right to confidential or privileged treatment > of this message is waived or lost by any error in > transmission. If you have received this message in error, > please immediately notify the sender by e-mail, > delete the message and all copies from your system and destroy > any hard copies. 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