How to know number of processors and size of RAM that should be used.

Mail actions: [ respond to this message ] [ mail a new topic ]
Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ] [ by messages with attachments ]

From: Vaibhav Sharma <honeysh24_at_gmail.com>
Date: Thu, 10 Mar 2011 17:47:05 +0530

Hello all,
I am new to gadget2.
I want to know that how many processors should I use?
Followings are details:
Number of particles= 1500^3 = 3,375,000,000
PMGRID=1500
RAM per processor = 4GB
ParallelFactor=1.5
TreeFactor=0.75

The formula
M1=ParallelFactor* (Ntot/Np) * (68 + TreeFactor*64)

I do not know the use of Np(number of processor).
How to use this formula. What is M1. Please tell in detail.
Please also tell me how to calculate total RAM required to run this
simulation.
Thanks in advance.
Received on 2011-03-10 13:17:25