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RE: [EnergyPlus_Support] Runtime: Windows vs Linux

Dru:
 
Thanks.  I don't have any compiler wisdom at this point--that's what I'm
looking for.  It seems NREL may have achieved some speed-up using an
Intel compiler, so I'm looking into that.
 
I do have a good Linux-friendly E+ run script (written in Perl), but it
won't really work without some changes to the E+ install process.  I've
reported a couple times before on the problems with the Linux install
process and offered suggestions to improve it, but that's apparently not
made it into the priority queue.
 
--Todd
-- 
Why is it Filipino, not Philippino?
 
 
 


________________________________

	From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Crawley, Drury
	Sent: Thursday, May 01, 2008 6:39 AM
	To: EnergyPlus_Support@xxxxxxxxxxxxxxx
	Subject: RE: [EnergyPlus_Support] Runtime: Windows vs Linux
	
	

	Todd,
	
	If you've got better compiler settings, scripts or other things
that
	would help E+ Linux users, please share. We can explore on
different
	Linux systems. If you're a Linux user and have special scripts
or aids
	to using E+ -- and willing to share, please let the team know.
	
	Dru Crawley
	
	________________________________
	
	From: EnergyPlus_Support@xxxxxxxxxxxxxxx
<mailto:EnergyPlus_Support%40yahoogroups.com> 
	[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx
<mailto:EnergyPlus_Support%40yahoogroups.com> ] On Behalf Of Taylor, Z
Todd
	Sent: Monday, April 28, 2008 12:53 PM
	To: EnergyPlus_Support@xxxxxxxxxxxxxxx
<mailto:EnergyPlus_Support%40yahoogroups.com> 
	Cc: Taylor, Z Todd
	Subject: [EnergyPlus_Support] Runtime: Windows vs Linux
	
	In testing the recent version 2.2, it seems the runtime
	discrepancy between the Windows version and the Linux version
	remains. On the same hardware, I see the Windows version
	running about 20% faster than Linux.
	
	Any idea if this is a result of compiler differences?
	Different compiler options? Math libraries? Any hope
	of rectifying the Linux speed penalty?
	
	We do runs by the thousands on a Linux cluster, so a 20%
	improvement would make a huge difference.
	
	--Todd
	-- 
	Z. Todd Taylor
	Manager, Residential R&D
	Building Energy Codes Program
	Pacific Northwest National Laboratory
	Why is it so hard to remember the spelling of "mnemonic"?
	
	[Non-text portions of this message have been removed]
	
	

	 



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


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