Re: [ccp4bb] different compilers for ccp4 code

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Previous message:
Subject: Re: different compilers for ccp4 code
From: Kay Diederichs Kay {- dot -} Diederichs {- at -} UNI-KONSTANZ {- dot -} DE
Date: 2010-05-19

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Subject: About seeding in microbatch under oil crystallization
From: wu donghui wdh0972 {- at -} GMAIL {- dot -} COM
Date: 2010-05-19

Subject: Re: different compilers for ccp4 code
From: Justin Lecher j {- dot -} lecher {- at -} FZ-JUELICH {- dot -} DE
Date: 2010-05-19

On 19/05/10 09:40, Kay Diederichs wrote:
> Charles Ballard schrieb:
>> Hi Francois
>>
>> configure linux_intel_compilers
>>
>> should do the trick. We distribute ccp4 built with the intel compilers for OS X. Part of this is that the macs cover a much smaller range of cpus than linux boxes, so optimisation is less of a problem. If you want speed make sure that you are compiling for your architecture.
>>
>> My feeling, and I haven't checked this for some time, is that the intel compilers are a bit faster, 5-10% max, but that the gnu compilers have been closing the gap.
>
> true
>

It is extremely noticeable for cns. With similar optimizations you get a
boost of more then 30% comparing the gcc/gfortran and ifc/icc builds.

--
Justin Lecher
Institute for Neuroscience and Biophysics
ISB 3 - Institute for structural biochemistry
Research Centre Juelich GmbH,
52425 Juelich,Germany
phone: +49 2461 61 5385

CCP4bb navigation

CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Previous message:
Subject: Re: different compilers for ccp4 code
From: Kay Diederichs Kay {- dot -} Diederichs {- at -} UNI-KONSTANZ {- dot -} DE
Date: 2010-05-19

Next message:
Subject: About seeding in microbatch under oil crystallization
From: wu donghui wdh0972 {- at -} GMAIL {- dot -} COM
Date: 2010-05-19