ising machine

Programmable Probabilistic Computer with 1M p-bits

a month ago

Researchers developed a probabilistic computer with 1 million p-bits by networking FPGAs, overcoming single-chip limitations.
The machine performs Gibbs sampling at over a trillion flips per second, with all coupling weights stored in local on-chip memory.
Boundary information exchange between devices is minimal, using only 1-bit states.
A key finding is the timing ratio η = f_comm / f_p-bit, which determines boundary refresh frequency for distributed sampling to mimic monolithic systems.