[Dhsvm-users] Linux or Unix

[Surfleet, Christopher]

Mohammad or others:

Although this is not directly answering your question, I wanted to add
that the operating system you use makes a lot of difference in the speed
of DHSVM computations.  I started running DHSVM on a UNIX system and my
model runs were taking a few hours each.  When I ran the same
computations on a LINUX system I found my computation times were reduced
to 10-20% of the UNIX system times.  LINUX is a much more "efficient"
system and if you can find this resource for your modeling it can
significantly reduce model run times.

Chris Surfleet



-----Original Message-----
From: dhsvm-users-bounces at mailman1.u.washington.edu
[mailto:dhsvm-users-bounces at mailman1.u.washington.edu] On Behalf Of
Keith Adams
Sent: Sunday, July 27, 2008 10:36 PM
To: User Support list for DHSVM Model
Subject: Re: [Dhsvm-users] Computing Speed

Running two models (i.e., different parameter values) at the same time 
on a dual processor machine should take about the same time as one model

  on a single processor machine.

Three models at the same time will, of course, take longer, 4 longer 
still etc., with the increase approx. linear after 2 models, because 
DHSVM is doing a lot of calculation.

That's what happens on the dual-processor Sun I am using at present.

Keith.

safeeq wrote:

> Aloha DHSVM users

> 

>  

> 

> I was wondering if some body used or using latest processors like Core

2 

> Duo or Core 2 Extreme for running the DHSVM. I am currently running

the 

> model with nearly 430000 cells (10 m X 10 m) and 3 hr time step on 

> Pentium 4 (2.8 GHz) on windows OS. It is taking too much time to 

> complete one simulation so just though buying a new machine which good



> processor and memory.

> 

> I read that DHSVM does not make use of multiple processors so kind of 

> confused whether this going to help me or not. Let me know if anybody 

> has any suggestion for me.

> 

>  

> 

> Thanks in advance

> 

>  

> 

> **********************************************************

> 

> *Mohammad Safeeq *

> 

> Graduate Student, Sherman Lab. 242

> 

> 1910 East West Rd.Honolulu, HI 96822 USA

> 

> Phone: (808) 956 7518(O),941 9178 (R)

> 

> Email: safeeq at hawaii.edu

> 

> http://www2.hawaii.edu/~safeeq/

> 

> //"Leave the World better than you found it, take no more than you

need, 

> try not to harm life or the environment, make amends if you do." Paul 

> Hawken//

> 

> //**********************************************************//

> 

>  

> 

> 

>

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-- 
_______________________________________________ 

  Keith Adams,  Ph.D. Candidate
  School of Geography, Geology & Environmental Science
  The University of Auckland		
  Private Bag  92019, Auckland, New Zealand
  location:  room 736, Building 201N, 10 Symonds Street
             (Human Sciences Building, North Wing)
  email:  k.adams at auckland.ac.nz
  phone:  +64-9-373 7599  ext. 88202
  fax:  +64-9-373 7434 [mark Attention: Keith Adams]
  www:  http://www.sges.auckland.ac.nz/postgraduate/phds/students.shtm
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