Synchronization performance for an emulation comprising 2 interconnected LPUs accessing 2 different GPUs on the same host scaled over number of output ports exposed by each LPU.

<p>The number of output ports was varied over 25 equally spaced values between 50 and 15,000. The plot on the left depicts average synchronization time per execution step, while the plot on the right depicts average synchronization throughput (in number of ports per unit time) per execution step.