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 -