Stop press. There is a conference recording for this talk:

https://www.youtube.com/watch?v=-QCGam1DDqQ

This talk presents the technical innovations that make HPC in the cloud possible. I will cover everything from the best of class custom build Intel processors to low energy, low cost ARM processors that silently sneaked into server-class machines. I will speak about purpose build networking that bypasses the TCP/IP stack to guarantee lowest latency, low jitter networking beyond what is possible with classical NICs. And I will cover the open source software that makes it possible to spin up very large scale HPC clusters in the cloud.

Oh, and of course I will answer the question if 1.000.000 cores is pure marketecture or if it really happened. Of course it really happened.