[gmx-users] Regarding the broken compiler gcc 4.1.x

[Jussi Lehtola]

On Thu, 2009-05-14 at 12:13 +0530, rashmi_chem at iitb.ac.in wrote:
> Dear gmxusers,
> 
> The warning on the GROMACS download page says :
> 
> WARNING: do not use the gcc 4.1.x set of compilers. They are broken. These
> compilers come with recent Linux distrubutions like Fedora 5/6 etc.
> 
> 
> So I installed CentOS 4.3 with gcc 3.4.5 and Fedora 10 with gcc 4.3.2 on
> two different machines with same configuration( quad core dual xeon
> machine clock 2 GHz). In both the machines Gromacs-4.0.4 was installed and
> tetsed using corresponding gmxtest set. Many tests failed as following:
> 
> 16 out of 63 kernel tests FAILED
>  pdb2gmx tests PASSED
> 
> 
> But when the same tests were performed on CentOS 5.0 with "gcc 4.1.2" (so
> called "broken compiler"), all tests passed except one.

You're talking of CentOS 4.3 and 5.0, both are obsolete: you should
update to 4.7 and 5.3, respectively.


> Are gcc 4.1.x series of compilers still broken? because the message on
> gromacs download page is quite old.

RedHat has backported a lot of fixes into their gcc, and thus the CentOS
version works.
-- 
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Jussi Lehtola, FM, Tohtorikoulutettava
Fysiikan laitos, Helsingin Yliopisto
jussi.lehtola at helsinki.fi, p. 191 50632
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Mr. Jussi Lehtola, M. Sc., Doctoral Student
Department of Physics, University of Helsinki, Finland
jussi.lehtola at helsinki.fi
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