Greetings, Can anyone confirm that R can access more than 2GB of virtual memory on Windows? We are in the process of porting a memory-hungry routine from Linux. We are using R 1.8.1 on Windows 2000 Advanced Server; we've set the 3GB switch in boot.ini, and rebooted twice. We have run editbin against Rgui.exe ad Rterm.exe and confirmed the header settings with dumpbin.exe. We are invoking R with "C:\Program Files\R\rw1081\bin\Rgui" --max-mem-size=3G Does anyone have a simple script that they have used to confirm that R can access more than 2GB? We have tried a few without success. Regards, Steve Jernigan
Hi, I am also interested in the same topic, that is windows 32bit restriction to 4Gigs of virtual address space partitioning into User and System space. For your reconfigured server 3:1 User to System space what does memory.limit() say is available? For those interested a windows FAQ link on this subject is http://www.stats.ox.ac.uk/pub/R/rw-FAQ.html#There%20seems%20to%20be%20a%20limit%20on%20the%20memory%20it%20uses! marcus>>> "Steve Jernigan - PA" <sjerniga at GMACCM.com> 20/05/2004 7:58:37 AM >>>Greetings, Can anyone confirm that R can access more than 2GB of virtual memory on Windows? We are in the process of porting a memory-hungry routine from Linux. We are using R 1.8.1 on Windows 2000 Advanced Server; we've set the 3GB switch in boot.ini, and rebooted twice. We have run editbin against Rgui.exe ad Rterm.exe and confirmed the header settings with dumpbin.exe. We are invoking R with "C:\Program Files\R\rw1081\bin\Rgui" --max-mem-size=3G Does anyone have a simple script that they have used to confirm that R can access more than 2GB? We have tried a few without success. Regards, Steve Jernigan ______________________________________________ R-help at stat.math.ethz.ch 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 ______________________________________________________ The contents of this e-mail are privileged and/or confidenti...{{dropped}}
R can. R 1.8.1 cannot, but it is obselete. On Thu, 20 May 2004, Marcus Davy wrote:> I am also interested in the same topic, that is windows 32bit > restriction to 4Gigs of virtual > address space partitioning into User and System space. > For your reconfigured server 3:1 User to System space what does > > memory.limit() > > say is available? > > For those interested a windows FAQ link on this subject is > > http://www.stats.ox.ac.uk/pub/R/rw-FAQ.html#There%20seems%20to%20be%20a%20limit%20on%20the%20memory%20it%20uses!(and in the distribution, lonked from the menus). That explicitly says The information here applies only to recent versions of R for Windows, (1.9.0 or later); the current version is often called something like rw1090 (although not officially). At least two users who were interested have reported success after following those instructions (during the pre-release testing phase). -- Brian D. Ripley, ripley at stats.ox.ac.uk 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
Hi, thanks to Prof Brian Ripley for clarifying this, I should have stated that the FAQ link I provided was for R 1.9.0 for windows. A nice summary of the issue on 32 bit systems and physical RAM limitations of (more recent) windows operating systems can be found at: http://www.michna.com/kb/WxMoreThan2GB.htm. According to microsoft information the /3GB switch in the Boot.ini is available for the following operating systems; Windows XP Professional Windows Server 2003 Windows Server 2003, Enterprise Edition Windows Server 2003, Datacenter Edition Windows 2000 Advanced Server Windows 2000 Datacenter Server Windows NT Server 4.0, Enterprise Edition marcus>>> Prof Brian Ripley <ripley at stats.ox.ac.uk> 22/05/2004 10:11:48 PM >>>R can. R 1.8.1 cannot, but it is obselete. On Thu, 20 May 2004, Marcus Davy wrote:> I am also interested in the same topic, that is windows 32bit > restriction to 4Gigs of virtual > address space partitioning into User and System space. > For your reconfigured server 3:1 User to System space what does > > memory.limit() > > say is available? > > For those interested a windows FAQ link on this subject is > >http://www.stats.ox.ac.uk/pub/R/rw-FAQ.html#There%20seems%20to%20be%20a%20limit%20on%20the%20memory%20it%20uses! (and in the distribution, lonked from the menus). That explicitly says The information here applies only to recent versions of R for Windows, (1.9.0 or later); the current version is often called something like rw1090 (although not officially). At least two users who were interested have reported success after following those instructions (during the pre-release testing phase). -- Brian D. Ripley, ripley at stats.ox.ac.uk 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 ______________________________________________________ The contents of this e-mail are privileged and/or confidenti...{{dropped}}