The Museo de Historia de la Computación in Spain has unveiled a 1:1 scale visual replica of the legendary Cray-1 supercomputer, using 30 2012-era Mac Minis to power its operations. The project, spanning 18 months, serves as a tribute to both the Cray-1 and Apple’s early computing power.

Developers have orchestrated the 64 active processing cores to achieve 1.3 teraflops of performance, a testament to the resilience of consumer hardware. The original Cray-1, with its vector processing, has been re-created with a parallel cluster setup, highlighting the evolution in computer architecture. Guests can witness real-time matrix algorithms being run, showcasing the system’s performance from a single core to the full suite.

Despite the use of macOS Mojave, which was not initially the most obvious choice, the team found that its built-in support for MPI allowed for efficient task distribution among the nodes. This project not only educates but also reflects on the capabilities and limitations of modern consumer hardware in replicating and outpacing historical supercomputers.

The engineering challenge of cooling 30 consumer PCs into an operational cluster was met with passive convection cooling, making the replica nearly inaudible compared to modern data centers. This project serves as a reminder of how far computing technology has come, and perhaps, how far it can still go with ingenuity and resourcefulness.