Hi all, I'm trying to compile at the moment without success both ALPS 1.3.5 and 2.0.0b4 under IBM SP Power 6. Here are the machine details: https://hpc.cineca.it/docs/guide2010/31IBMSP6UserGuide. The operating system is AIX 6.1, I suspect the reason could be the compiler version, since recent Boost releases have been tested with Visual Age 11: the machine has Visual Age C++ 10.1 (xlC -qversion gives IBM XL C/C++ for AIX, V10.1 Version: 10.01.0000.0008) and GNU g++ 4.2.0 (provided by IBM). Could you please confirm me if this can be an issue ? which compiler version is required for building both ALPS versions (but especially 2.0) on this machine ? which compilation options have to be used ? Please help me !! Jessica Alfonsi