OS/2 swapping for Mathematica
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg1597] OS/2 swapping for Mathematica
- From: "Michael U. Bogatyriev" <mbog at tulgtu.tula.su>
- Date: Tue, 4 Jul 1995 01:08:24 -0400
- Organization: Tula Tech. University
Hello, > > Could someone please explain how Mathematica for OS2 uses virtual > > memory? Is it capable of swapping out active blocks of memory? > > In OS/2, as in Windows, virtual memory is a function of the operating system. > Functional details of virtual memory, such as swapping pages of memory to and > from the hard disk, are handled by the operating system and are invisible to > user programs, including Mathematica. So, in essence, you are actually asking > if OS/2 can swap out active blocks of memory for running programs. Yes, it > can, as can Windows, although OS/2 has fewer limitations (see below). ........... > > Ezra D. Greenberg > > Department of Economics > > University of Maryland at College Park > > edg at wam.umd.edu > > John Fultz > Wolfram Research, Inc. > My experience in running Mathematica under OS/2 confirms Mr. Fultz's opinion that OS/2 arranges swap file more effectively than Windows. Moreover I run Mma as a Windows's session from OS/2. Having 60 Mbytes swap declared in OS/2, I see OS/2 dynamically distributes it and there are no problems with such Mma's functions as NDSolve[]. But there is another problem. Mathematica takes from Windows all processor resources (100% even I did not load Mma's kernel!). Other users in OS/2 do not like my Mathematica (but I do!). May be I need real OS/2 Mathematica version for optimal computing? Sincerely, Michael Bogatyriev Department of Automatic Control Tula State Tech. University Tula 300600 RUSSIA mbog at tulgtu.tula.su