Re: [EnergyPlus_Support] Multi-threading EnergyPlus

["Bing Dong" <bingcat2007@xxxxxxxxx>]

We also find the same phenomena when we are running on a four-core server.

On Tue, May 6, 2008 at 11:37 PM, Crawley, Drury <Drury.Crawley@xxxxxxxxxx>
wrote:

>   EnergyPlus only runs a single thread--no multithreading (yet).
>
> But I recently went from a single core 1.8 GHz machine (with 1 GB
> memory) to a dual-core 1.2 GHz PC (with 2 GB memory). The set of
> example files ran almost twice as fast on the new dual-core PC. Two
> reasons--the extra memory and the unloaded second core.
>
> ________________________________
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx<EnergyPlus_Support%40yahoogroups.com>
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx<EnergyPlus_Support%40yahoogroups.com>]
> On Behalf Of Bing Dong
> Sent: Tuesday, May 06, 2008 11:22 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx<EnergyPlus_Support%40yahoogroups.com>
> Subject: Re: [EnergyPlus_Support] Multi-threading EnergyPlus
>
>
> I believe that NREL is running E+ on clusters.
>
> Bing
>
> On Tue, May 6, 2008 at 8:49 PM, Edwin Lee <leeed2001@xxxxxxxxx<leeed2001%40gmail.com>
> <mailto:leeed2001%40gmail.com <leeed2001%2540gmail.com>> > wrote:
>
> > As far as I know, (and I will in no way claim to be an expert in the
> > subject), the calculation engine in E+ (successive substitution) does
> not
> > gain anything from being run on multiple cores of a pc or a pc
> cluster. In
> > a program like Fluent, the domain can be broken into separate chunks,
> and
> > only data at each boundary need be communicated. For E+, information
> is
> > flying all over the place. One thing people use multiple computers for
> is
> > to start multiple instances of E+ to run multiple simulations at the
> same
> > time.
> >
> > If anyone out there has any more to say, please fill in the gaps or
> > correct
> > me - or back me up :) -
> >
> > Edwin
> >
> > On Tue, May 6, 2008 at 7:13 PM, andrew.tsakmakis <
> > andrew.tsakmakis@xxxxxxxx <andrew.tsakmakis%40arup.com> <mailto:
> andrew.tsakmakis%40arup.com <andrew.tsakmakis%2540arup.com>>
> <andrew.tsakmakis%40arup.com>>
> > wrote:
> >
> >
> > > Hello,
> > >
> > > Is there a pre-compiled, multi-threaded version of EnergyPlus for
> use
> > > on multicore PC's or clusters available? (preferably windows but
> could
> > > be linux)
> > >
> > > Many Thanks
> > > Andrew
> > >
> > >
> > >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
> [Non-text portions of this message have been removed]
>
>  
>


[Non-text portions of this message have been removed]


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