[Bug rtl-optimization/31021] gfortran 20% slower than ifort on CP2K computational kernel

Joost.VandeVondele at mat dot ethz.ch gcc-bugzilla@gcc.gnu.org
Wed Mar 27 11:47:00 GMT 2013


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31021

Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:

           What    |Removed                     |Added
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                 CC|                            |Joost.VandeVondele at mat
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--- Comment #15 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> 2013-03-27 11:47:12 UTC ---
New URL:

https://www.dropbox.com/s/g28kdvatrgeu6hm/extracted_collocate.tgz

(contains nearly 2Mb of data needed to run the testcase).

the difference between trunk and ifort has become smaller. I'm now seeing only
5% difference (on a different CPU).

3.50946712 vs. 3.354490

I adjusted in the Makefile the ifort option to use -xHost.



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