I have built a few AMD64 + IA32 (+HPUX) clusters. Don't know if it is common, but I suspect that application requirements will drive deployed platforms. Any specific problems or issues you are worried about? Joe Daniel.G.Roberts@aventis.com wrote: > > Anyone out there have a single linux cluster which as both 32bit and > 64 bit compute nodes within the same cluster. > Is this very common? > thanks > Dan > -- Joseph Landman, Ph.D Founder and CEO Scalable Informatics LLC, email: landman@scalableinformatics.com web : http://www.scalableinformatics.com phone: +1 734 612 4615