Hi all, I've added a i386 repo to my x86_64 nodes and I'm seeing that, when installing the node, yum sometimes installs many i386 packages and sometimes not. So, I'd like to set yum to install always x86_64 and then i386 (if needed or specified). Reading yum.conf man I saw : multilib_policy Can be set to ’all’ or ’best’. All means install all possible arches for any package you want to install. Therefore yum install foo will install foo.i386 and foo.x86_64 on x86_64, if it is available. Best means install the best arch for this platform, only. so seems that is the param I want. Yum tries to install x86_64 but if I specify foo.i386 it will install foo.i386 too. But then I noticed a strange behaviour (bug? feature?) when installing groups of packages. If multilib_policy is set to best, i386 packages from the group are not installed: # grep multilib_policy /etc/yum.conf multilib_policy=best # yum groupinstall glite-WN [....] No packages in any requested group available to install or update # grep multilib_policy /etc/yum.conf #multilib_policy=best # yum groupinstall glite-WN [...] Dependencies Resolved ================================================================================================================================================================================ Package Arch Version Repository Size ================================================================================================================================================================================ Installing: dpm i386 1.7.4-7sec.sl5 gLite-WN-3.2-updates 3.9 M dpm-devel i386 1.7.4-7sec.sl5 gLite-WN-3.2-updates 609 k dpm-libs i386 [...] so here comes some questions: 1.-) I'm not a "yum group" expert, but a group is a list of packages to be installed, so, why is yum bypassing i386 packages? Cause I can install all missing packages "by hand". is it a problem in group's creation? 2.-) Who may I configure yum so it install x86_64 packages always, and only i386 if needed or specified? Many thanks in advance, Arnau