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Re: Big memory needed

  • To: mathgroup at smc.vnet.net
  • Subject: [mg110197] Re: Big memory needed
  • From: "Hobbs, Sylvia (DPH)" <Sylvia.Hobbs at state.ma.us>
  • Date: Mon, 7 Jun 2010 08:08:01 -0400 (EDT)

480 seconds!!! As Gomer Pyle use to say, "SHAZAM!!!"
________________________________________
From: mathgroup-adm at smc.vnet.net [mathgroup-adm at smc.vnet.net] On Behalf Of M.Roellig [markus.roellig at googlemail.com]
Sent: Sunday, June 06, 2010 6:41 AM
To: mathgroup at smc.vnet.net
Subject: [mg110197] [mg110174] Re: Big memory needed

Wow, 480 secs vs. 45 hrs - really seems to be a major
rewrite. Any ETA for V.8?

Markus

On 4 Jun., 14:03, Adam Strzebonski <ad... at wolfram.com> wrote:
> Mathematica 8 (currently under development) will include
> a major rewrite of the Solve command. Using the development
> version of Mathematica, the computation takes 480 seconds
> on a 4-core 2.8 GHz Xeon processor and uses 16 GB of RAM.
>
> The result contains 20 solutions and can be downloaded at
>
> http://members.wolfram.com/adams/MathGroupSolve.txt.gz
>
> (4 MB gzip-ed file, 235 MB after gunzip).
>
> Best Regards,
>
> Adam Strzebonski
> Wolfram Research
>
>
>
> -------- Original Message --------
> Subject:      Re: Big memory needed
> Date:     Thu, 3 Jun 2010 05:41:21 -0400 (EDT)
> From:     Stan Bischof <s... at newserve.worldbadminton.com>
> To:     mathgr... at smc.vnet.net
>
> Artur<gra... at csl.pl>  wrote:
>
>  >  Dear Mathematica Gurus,
>  >  I would like to ask somebody with big memory in computer (more than 4
>  >  GB) to help me in solution following equation:
>  >  Solve[{1/(2 p) (-c p^2 + b p^3 - p^6 + 2 c q + 3 p^4 q - 3 p^2 q^2 +
> 2 q^3 +
>  >        a^2 (-p^2 + q) - a (c - b p + 2 p^4 - 4 p^2 q + 3 q^2)) ==== d,
>  >   1/(4 p^2) (-c^2 + b^2 p^2 + a^2 p^4 + 2 a p^6 + p^8 -
>  >       2 b p^3 (a + p^2 - 2 q) - 4 a p^4 q - 4 p^6 q +
>  >       2 c (a + p^2 - q) q - a^2 q^2 - 2 a p^2 q^2 + 3 p^4 q^2 +
>  >       2 a q^3 + 2 p^2 q^3 - q^4) ==== e}, {p, q}]
>
> well , 4 hours in it is at about 12GB process size and growing slowly.
> Will be interesting to see where it tops out.
>
> Stan- Zitierten Text ausblenden -
>
> - Zitierten Text anzeigen -


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