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We provide high-speed implementations for simulating reservoirs described by$N$-coupled spin-torque oscillators. Here $N$ also corresponds to the number ofreservoir nodes. We benchmark a variety of implementations based on CPU andGPU. Our new methods are at least 2.6 times quicker than the baseline for $N$in range $1$ to $10^4$. More specifically, over all implementations the bestfactor is 78.9 for $N=1$ which decreases to 2.6 for $N=10^3$ and finallyincreases to 23.8 for $N=10^4$. GPU outperforms CPU significantly at $N=2500$.Our results show that GPU implementations should be tested for reservoirsimulations. The implementations considered here can be used for any reservoirwith evolution that can be approximated using an explicit method.

Virtual reservoir acceleration for CPU and GPU: Case study for coupled spin-torque oscillator reservoir