How Einstein's theories helped drive a computing revolution, and how computation solved Einstein's equations: a symbiotic relationship for over half a century.

We will tell the story of how Einstein's theories, and in particular the problem of colliding back holes, helped drive the scientific computing revolution for more than half a century. At the same time, advances in computing hardware, algorithms, and software were essential in the solution to Einstein's equations. Impossible until the last two decades, this capability is now essential for the new field of multi-messenger astronomy. We will describe the interplay of these developments, and the important roles played by German, American and international communities.