Re: Use of large memory
- To: mathgroup at smc.vnet.net
- Subject: [mg50438] Re: Use of large memory
- From: fei.fzhou at gmail.com (Fei)
- Date: Fri, 3 Sep 2004 03:36:30 -0400 (EDT)
- References: <ch6n9s$2ao$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
I have been running Mathematica on HP tru64 unix, linux + Xeon, linux + Itanium2 and SunOS machines, all with more than 4 GB of memory, but mathematica cannot handle any matrix larger than 2GB. When one allocates several smaller matrices with total memory > 2GB, MemoryUsed[] is negative. This is quite disappointing. Could any person from Wolfram explain what is happening? thanks, Fei Gerry Flanagan <flanagan at materials-sciences.com> wrote in message news:<ch6n9s$2ao$1 at smc.vnet.net>... > I was running into memory limits for a large numerical problem in V5.0. The > fastest fix (I thought) was to get a large amount of RAM. We purchased a > Pentium 4 machine running XP, with 4GB of memory. I built a test function > that progressively uses more memory and prints MemoryUsed[]. Every time I > get to just under 2GB of memory, I get the out-of-memory error from the > kernal. There's nothing else running, and task manager says there's plenty > left. Has anyone found some Windows XP tweak that allows Mathematica to use > what's available? Would this all work better in Linux? > > Gerry Flanagan