Asking this question about when it makes economic sense to build one's cluster in the cloud has led me to some interesting thoughts. Everyone seems to have a slightly different idea of what a reasonable cost per cluster CPU core is, everyone has a slightly different idea of what constitutes appropriate hardware for a given task, etc.
This has made me realize how useful it would be to get a list of the hardware everyone on the site is using, and, broadly, what they're using it for. What would also be really useful would be a rough estimate of the cost per CPU core. People could give make/model of the CPU, quantity of RAM, whether the cluster is in-house or off-site, etc.
I know that this isn't a hardware site, but that's what would make this so great. Although we all use serious computing machinery every day for our work, none of us are truly hardware people. This kind of task-specific hardware guide would be insanely useful. I for one would have loved to have had a guide like this during my last round of cluster node acquisition.
I realize that lists are the devil around here, but is there any place on the site where such a community hardware guide could live?