I dont seem to be able to install devtoolset-3 on an sl6x x86_64 system. I've done it successfully with devtoolset-2 on an i686 system. My procedure is
1. Wget the yum-conf-devtoolset rpm and install it. 2. Then, when I do a # yum --enablerepo=devtoolset install devtoolset-3-toolchain it just comes back and says no such available package. Though the package is listed clear as day on the mirror. I've tried this on 2 different systems and the result is the same. I'm baffled. What am I missing? Thanks.