  Improvements in computing performance have significantly slowed down over the
past few years owing to the intrinsic limitations of computing hardware.
However, the demand for data computing has increased exponentially. To solve
this problem, tremendous attention has been focused on the continuous scaling
of Moore's Law as well as the advanced non-von Neumann computing architecture.
A rich variety of unconventional computing paradigms has been raised with the
rapid development of nanoscale devices. Magnetic skyrmions, spin swirling
quasiparticles, have been endowed with great expectations for unconventional
computing due to their potential as the smallest information carriers by
exploiting their physics and dynamics. In this paper, we provide an overview of
the recent progress of skyrmion-based unconventional computing from a joint
device-application perspective. This paper aims to build up a panoramic
picture, analyze the remaining challenges, and most importantly to shed light
on the outlook of skyrmion based unconventional computing for interdisciplinary
researchers.
