I'd like to ask about the rationale behind closing my question about [compilers for AMD Bulldozer CPUs][1]. 

The FAQ for ServerFault states that questions about (quote)

 - *Server* and Business Workstation *operating systems*, hardware, *software* and virtualization

are on topic, as long as its not just (quoted again)

 - Product, service, or learning material recommendations

As I asked for *benchmarks* that are ultimately intended to optimize the utilization of servers (as opposed to concrete product recommendations), I don't see the problem. Even if you feel that this question is more on topic on Stackoverflow, why close it instead of migrating it?

  [1]: https://serverfault.com/questions/422399/linux-compilers-for-c-c-on-amd-bulldozer-cpus-like-the-interlagos