在OpenStack集群中，所有计算机必须具有相同的处理器体系结构吗？

With OpenStack's architecture, is it possible to, for instance, have a PowerPC64 (Altivec) machine, a Intel CoreDuo machine, and a ARMv6 all on the same cluster? Or is this impossible, because of the restrictions in building buildpacks when deploying to multiple architectures?With OpenStack's architecture, is it possible t