[Users] Regarding configuration of workstation

[Roland Haas]

Dear Indrani,

Sure. Hope this will work out well for you.

Yours,
Roland

> Dear Roland,
> 
> Thank you very much for your detailed response.
> I am chiefly interested in running binary black hole simulations.
> It turns out that I can only purchase a workstation with my project money.
> However, as you suggest I will try and get an account in a cluster
> eventually.
> In case I face any difficulty at that time I will get back to you.
> 
> Thanks and best regards,
> Indrani
> **********************************************
> Indrani Banerjee
> Assistant Professor
> Department of Physics & Astronomy,
> National Institute of Technology, Rourkela
> Odisha-769008, India
> email: banerjeein at nitrkl.ac.in,
> indrani.physics1 at gmail.com
> **********************************************
> 
> 
> On Thu, Oct 6, 2022 at 8:06 PM Roland Haas <rhaas at illinois.edu> wrote:
> 
> > Dear Indrani,
> >
> > Sorry for the long delay. We had discussed you question already in last
> > week's Einstein Toolkit call.
> >
> > Unfortunately there is no direct answer that one can provide.
> >
> > The size of the workstation is very much dependent on the intended use,
> > large differences existing for example between purely vacuum and
> > simulations including matter. The latter usually being at least twice
> > as expensive compute time and memory wise.
> >
> > Generically a single workstation is not really enough for production
> > type work, since you usually need to either run many smaller
> > simulations (so a single workstation is not enough) or one large
> > simulation (in which case it won't fit on the workstation).
> >
> > Usually a workstation would be used for development and testing. For
> > development you would require only a "typical" workstation and 16GB of
> > RAM would be enough. For testing, one with large memory (>64GB) can be
> > useful to test code (fits memory-wise0 but will be slow due to only a
> > single CPU socket. I use my own workstation (96GB, 12 slow cores), for
> > this.
> >
> > You can take a look at the gallery examples:
> >
> > BBH:
> > https://urldefense.com/v3/__http://einsteintoolkit.org/gallery/bbh/index.html__;!!DZ3fjg!6k79Jua84TA1VHokNMPWCV8nOZrHuQJ94Lsmon1eIOLehg-x-JBz7XVOeRxriAW5akHtfnEr9E0Xft76x_LdRAXpzcw$  
> > 98GB, somewhat reasonable resolution but "real" ones could well be
> > about 2 times more expensive memory wise
> >
> > BNS:
> > https://urldefense.com/v3/__http://einsteintoolkit.org/gallery/bns/index.html__;!!DZ3fjg!6k79Jua84TA1VHokNMPWCV8nOZrHuQJ94Lsmon1eIOLehg-x-JBz7XVOeRxriAW5akHtfnEr9E0Xft76x_LdSz4buR0$  
> > 8.8GB for the BNS example but it is *way* too low resolution. Normally
> > the resolution across the star should be about 150m (about 0.1Msun) but
> > currently is 416m (0.28) so 2.8 times too coarse. This will make the
> > "real" run use ~20 times more memory (so ~128GB or so).
> >
> > For actual data production accessing a small cluster is usually best.
> > Either on campus or via a national or international institution. I do
> > not know what the situation in your location is like. In the US / EU
> > one would usually try ACCESS / PRACE startup allocations first.
> >
> > Yours,
> > Roland
> >  
> > > Hello everyone,
> > >
> > > I am planning to buy a workstation from my project. Can anyone suggest  
> > what  
> > > should be its minimal configuration so that I can install Einstein  
> > Toolkit  
> > > in it and use it to generate numerical waveforms?
> > >
> > > Thanks in advance.
> > > With best regards,
> > > Indrani
> > > **********************************************
> > > Indrani Banerjee
> > > Assistant Professor
> > > Department of Physics & Astronomy,
> > > National Institute of Technology, Rourkela
> > > Odisha-769008, India
> > > email: banerjeein at nitrkl.ac.in,
> > > indrani.physics1 at gmail.com
> > > **********************************************  
> >
> >
> >
> > --
> > My email is as private as my paper mail. I therefore support encrypting
> > and signing email messages. Get my PGP key from https://urldefense.com/v3/__http://keys.gnupg.net__;!!DZ3fjg!6k79Jua84TA1VHokNMPWCV8nOZrHuQJ94Lsmon1eIOLehg-x-JBz7XVOeRxriAW5akHtfnEr9E0Xft76x_Ldk4q0VY4$  .
> >  



-- 
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