Hi, I don't remember any incident related to tools crashing, but I do recall a problem which initially was attributed to a known gcc 4.1 bug (http://redmine.gromacs.org/issues/431), but it turned out to be a GB bug.
However, knowing that there is such a nasty bug in gcc 4.1, we thought it's better to discourage this compiler version. Moreover, with gcc 4.1 you are wasting a serious amount of performance compared to 4.5 or 4.6. Cheers, -- Szilárd On Thu, Nov 24, 2011 at 12:58 AM, Justin A. Lemkul <jalem...@vt.edu> wrote: > > > Efrat Exlrod wrote: >> >> Hi, >> >> >> I want to install standard gromacs 4.5.5 on a new linux machine, prior to >> installing GPU accelerated gromacs. Looking at the installation instructions >> I see you recommend not to use GCC 4.1.x series of compilers. >> >> >> A year ago I have installed gromacs 4.5.3 and I don't recall seeing the >> recommendation of not using the GCC 4.1.x compilers. The gcc version of > > The warning about the gcc compilers has been on the website for several > years. > >> the computer on which I installed is: >> /usr/bin/gcc -v ==> /u/gcc version 4.1.2 20080704 (Red Hat 4.1.2-51). >> >> >> Is there also a problem with gromacs 4.5.3 and GCC 4.1.x? Was I supposed >> to have trouble installing or running? >> > > As I recall, the bug was in gcc and it led to various random failures of > different tools. Perhaps others with more knowledge of the compilers > themselves can comment. Upgrading gcc is a good idea; the 4.1.x is quite > outdated. > >> Is it possible I was able to compile and run but I can't rely on the >> results I got? >> > > Possible. More likely you would get random instability rather than some > hidden inaccuracy. > > -Justin > >> >> Thanks, Efrat > > -- > ======================================== > > Justin A. Lemkul > Ph.D. Candidate > ICTAS Doctoral Scholar > MILES-IGERT Trainee > Department of Biochemistry > Virginia Tech > Blacksburg, VA > jalemkul[at]vt.edu | (540) 231-9080 > http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin > > ======================================== > -- > gmx-users mailing list gmx-users@gromacs.org > http://lists.gromacs.org/mailman/listinfo/gmx-users > Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/Search before posting! > Please don't post (un)subscribe requests to the list. Use the www interface > or send it to gmx-users-requ...@gromacs.org. > Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
