Re: "No more memory "
- To: mathgroup at smc.vnet.net
- Subject: [mg30193] Re: "No more memory "
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Thu, 2 Aug 2001 03:15:50 -0400 (EDT)
- Organization: Universitaet Leipzig
- References: <9k87t2$4uv$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
buy more RAM ???
Don't waste memory for the Frontend and the X-Window system,
and run the kernel alone.
AFAIK the most unix systems can't put active used memory
in the swap space. If your "full" expression need more than
a GByte RAM the swap space does not matter. Only unused
processes like daemons, seeping processes are puted into the swap.
Since the equations are linear it is no problem to solve
it analytical with DSolve[] and
eq5 = DSolve[{d05'[z] == (a + \[ImaginaryI]*b)*dh5[z],
dh5'[z] == (a + \[ImaginaryI]*b)*d05[z] +
\[ImaginaryI]*c*\[Xi]*dh5[z],
d05[0] == 1, dh5[0] == 0},
{d05[z], dh5[z]},
z]
gives a solution that can be plotted. When the solution are plotted
my IRIX box say 8715640 bytes where used.
Regards
Jens
zosi wrote:
>
> Hi,
>
> We are working with the Takagi equations
> (see attached simplified notebook).
> To avoid the following Mathematica message
>
> "No more memory available
> Mathematica kernel has shut down
> Try quitting other applications and try again"
>
> we have updated our platform which now is
>
> 1 GB RAM, 2 GB swap, 23 GB free HD
> Version 4.1
> Linux RedHat 7.1, Kernel 2.4.2-2
> ---
> 4:35pm up 4:23, 4 users, load average: 4.39, 3.96, 3.34
> 2 processes: 1 sleeping, 1 running, 0 zombie, 0 stopped
> CPU states: 57.7% user, 42.2% system, 0.0% nice, 0.0% idle
> Mem: 1028792K av, 1024916K used, 3876K free,
> Swap: 2096440K av, 1103460K used, 992980K free, 762540K cached
> PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
> 32614 zosi 9 0 2404 4 4 S 0.0 0.0 0:02 Mathematica
> 2158 zosi 14 0 1394M 246M 436 R 37.0 24.5 25:27 MathKernel