5.4Trillion
Particles
Visualizations PHEASANT Collaboration
Building a Milky Way,Star by Star.
AI-accelerated exascale simulations of galaxy formation and evolution while resolving individual stars.
Performance at a glance
Exascale Simulations
of Our Galaxy.
PHEASANT brings the lives of individual stars into a galaxy-scale experiment, running at the scale of exascale systems.
976PFLOP/s
Perfomance of the Gravity Kernel
144Billion
Particles Processed second
0.22Solar Mass
Mass Resolution
One simulation, many scales
From spiral arms
to single stars.
Move through a continuous numerical universe—from a hundred thousand parsecs (~a couple of hundred thousand light-years) down to stellar-scale events that reshape stellar nurseries.
The whole system
Galaxy
Follow spiral structure, stellar migration, and the flow of matter across an entire Milky Way-mass galaxy.
Where stars are born
Star-forming regions on a bar
Resolve turbulent gas clouds, superbubbles, and the clustered environments that turn cold gas into stars.
Every source matters
Young stellar associations
Model individual stellar evolution and the supernovae that return energy and newly forged chemical elements to the galaxy.
Technologies behind PHEASANT
Three breakthroughs.
One Milky Way.
A Milky Way, star by star
We achieved subsolar-mass resolution in a Milky Way–mass simulation, resolving individual stars and following their evolution within one continuous model of the galaxy.
Portable Performance at Exascale
Our CUDA and SYCL GPU implementations, together with optimized x86 and Arm CPU implementations, sustain high performance across NVIDIA, AMD, and Intel GPUs as well as x86 and Arm CPUs, enabling highly scalable multi-scale physical simulations on diverse exascale systems.
AI Surrogate Modeling for Supernova Feedback
An AI surrogate model replaces computationally expensive and short-timescale simulations of supernova feedback, removing a major bottleneck in multi-scale galaxy simulations while preserving its impact on the matter cycle and galactic evolution.
Research & collaboration
Built to make the
invisible visible.
Publications
Methods, science results, and release notes will be collected here as the project develops.
Coming soonTeam
PHEASANT is built by a collaboration spanning astrophysics, deep learning, and high-performance computing.
Meet the collaborationContact
For research collaborations, data access, talks, and media inquiries.
info@pheasant-galaxy.org