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[Bug rtl-optimization/31021] gfortran 20% slower than ifort on CP2K computational kernel
- From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 27 Mar 2013 11:47:12 +0000
- Subject: [Bug rtl-optimization/31021] gfortran 20% slower than ifort on CP2K computational kernel
- Auto-submitted: auto-generated
- References: <bug-31021-4 at http dot gcc dot gnu dot org/bugzilla/>
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
| |dot ethz.ch
--- 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.