Re: [EnergyPlus_Support] E+ performance on Windows 7 64 bit much worse than in XP 32 bit

[Linda Lawrie <linda@xxxxxxxxxxxxxx>]

As all things in .eio files, there is a header that explains
the data lines:

! <Program Control Information:Threads/Parallel Sims>, Threading
Supported,Maximum Number of Threads, Env Set Threads (OMP_NUM_THREADS),
EP Env Set Threads (EP_OMP_NUM_THREADS). IDF Set Threads, Number of
Threads Used (Interior Radiant Exchange), Number NominalSurface, Number
Parallel Sims

At 02:32 PM 8/29/2012, hnoboam wrote:
> I am running batches of 13
> simulations and I noticed a serious degradation of EnergyPlus performance
> under Windows 7. The two machines used are:
> Machine 1: Intel Core Duo T9600 2.8GHz, 4.00 GB ram, Windows 7 64
> bit
>
> Machine 2: Intel Core i5-250M   2.5GHz, 2.98 GB ram, Windows XP
> 32 bit
>
> Ran the same batch of 13 simulations. From the eio files:
> Machine 1: 
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 2, 158, 1
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Program Control:Threads/Parallel Sims, Yes,2, 1, 1, 1, 1, 158, 2
> Elapsed time: 152 minutes
>
> Machine 2: From the eio files:
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 4, 158,
> 1
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
>  Program Control:Threads/Parallel Sims, Yes,4, 1, 1, 1, 1, 158,
> 2
> Elapsed time: 73  minutes.
>
> What is the meaning of the fours versus the twos in the first
> column?
> Anything I could do to improve EnergyPlus performance under
> Win7?
>
> Thanks,
> Homero.
>
>
>
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