1--- 2orphan: true 3--- 4 5(2025_meeting)= 6 7# 2025 PETSc Annual Users Meeting and Tutorial 8 9## Meeting location 10 11May 20-21, 2025, 101 Davis Hall, University of Buffalo, NY, USA ([105 White Rd, Amherst, NY 14260](https://maps.app.goo.gl/B38RsNe41Zd93rvX7)) 12 13## Meeting times 14 15- Monday, May 19 - Tutorial (tutorials begin at 9am) 16- Tuesday, May 20 - Meeting (begin at 9am) 17- Wednesday, May 21 - Meeting (ends around 5pm) 18 19## Agenda 20 21[comment]: # (Intro: Python, Linear/Nonlinear Solver, GPU) 22 23[comment2]: # (Adv: Meshing, SNESVI, Optimization) 24 25### Monday, May 19: Tutorial 26 27| Time | Title | Speaker | 28| -------- | ---------------------------------------------------------------------------------------------------------------------------- | ----------------------- | 29| 9:00 am | Introduction | [Matt Knepley] | 30| 9:15 am | Tutorial I: Introductory PETSc | [Toby Isaac] | 31| 12:00 pm | **Lunch** for tutorial attendees and early arrivees | | 32| 1:30 pm | Emergent flow asymmetries from the metachronal motion of the soft flexible paddles of the gossamer worm | [Alexander Hoover] | 33| 2:00 pm | Tutorial II: Advanced PETSc | [Matt Knepley and Toby Isaac] | 34| 5:00 pm | End of first day | | 35 36### Tuesday, May 20: Scientific Program 37 38| Time | Title | Speaker | 39| -------- | ---------------------------------------------------------------------------------------------------------------------------- | ----------------------- | 40| 9:00 am | Meeting Introduction | [Matt Knepley] | 41| 9:05 am | A projection method for particle resampling | [Mark Adams](https://www.youtube.com/watch?v=vl5WOooGg_M&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=14&pp=iAQB) | 42| 9:30 am | Dense Broyden-Fletcher-Goldfarb-Shanno (BFGS) | [Hansol Suh](https://www.youtube.com/watch?v=efOjxXJeEXU&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=10&pp=iAQB) | 43| 10:00 am | IBAMR: Immersed-Boundary Adaptive Mesh Refinement | [David Wells](https://www.youtube.com/watch?v=-TYu8x8hkcU&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=9&pp=iAQB) | 44| 10:30 am | TaoTerm | [Toby Isaac](https://www.youtube.com/watch?v=XwEZ6-VqEt8&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=18&pp=iAQB) | 45| 10:45 am | **Coffee Break** | | 46| 11:00 am | Multiple RHS multigrid for the lattice Dirac equation | [Peter Boyle](https://www.youtube.com/watch?v=eKks1IXHQ2E&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=17&pp=iAQB) | 47| 11:30 am | DMSwarmRT: Ray tracing with PETSc's particle management library DMSwarm | [Joseph Pusztay](https://www.youtube.com/watch?v=IrQ0ptBbzSU&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=11&pp=iAQB) | 48| 12:00 pm | Empire AI | [Matt Jones](https://www.youtube.com/watch?v=dHF2D2NIdgA&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=15&pp=iAQB) | 49| 12:15 pm | **Lunch** | | 50| 1:30 pm | Exploring Quantum Phases of Interacting Lattice Models via Exact Diagonalization | [Cheng-Chien Chen](https://www.youtube.com/watch?v=MDYmajrhLsw&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=3&pp=iAQB) | 51| 2:00 pm | Cardiac Fluid Dynamics | [Boyce Griffith](https://www.youtube.com/watch?v=4T4sU4pmfEc&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=1&t=26s&pp=iAQB) | 52| 2:30 pm | Application of CutFEM and SCIFEM to the modeling of coastal processes through vegetation | [Chris Kees](https://www.youtube.com/watch?v=l-z2Hj9pGtY&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=4&pp=iAQB) | 53| 3:00 pm | PetscRegressor | [Richard Mills](https://www.youtube.com/watch?v=qto8TNTwkjw&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=5&pp=iAQB0gcJCfwJAYcqIYzv) | 54| 3:15 pm | **Poster Session and Coffee Break** | | 55| 4:30 pm | **End of Posters** | | 56| 4:45 pm | Leave on bus for dinner at Niagara Falls | | 57 58 59### Wednesday, May 21: Scientific Program 60 61| Time | Title | Speaker | 62| -------- | ---------------------------------------------------------------------------------------------------------------------------- | ----------------------- | 63| 9:00 am | Mesh Transformations | [Matt Knepley](https://www.youtube.com/watch?v=s-83i-asJVQ&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=16&pp=iAQB) | 64| 9:30 am | Automatic Generation of Matrix-Free Routines for PDE Solvers with Devito via PETSc | [Zoe Leibowitz](https://www.youtube.com/watch?v=FAiuTPkowM0&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=19&pp=iAQB) | 65| 10:00 am | PetscFD: Simplifying PDE Solutions | [David Salac](https://www.youtube.com/watch?v=67gf2qQSWZQ&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=8&pp=iAQB) | 66| 10:30 am | Implications of nonlinear rheology for plate tectonics | [Margarete Jadamec](https://www.youtube.com/watch?v=ncq4VbNSn80&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=13&t=6s&pp=iAQB) | 67| 10:45 am | **Coffee Break** | | 68| 11:00 am | Proteus Toolkit | [Darsh Nathawani](https://www.youtube.com/watch?v=16lIjuEhAOY&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=7&pp=iAQB) | 69| 11:30 pm | GitWorkflows | [Satish Balay](https://www.youtube.com/watch?v=MkNyrNuXImU&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=2&pp=iAQB) | 70| 12:00 pm | **Lunch** | | 71| 1:30 pm | pyop3: A DSL for Unstructured Mesh Stencil Calculations | [Conor Ward](https://www.youtube.com/watch?v=KdYDjjIL3xc&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=6&pp=iAQB) | 72| 2:00 pm | IMEX in PETSc | [Hong Zhang] | 73| 2:15 pm | Early Experiences in Building AI Assistants for Improving the Productivity of PETSc Users and Developers | [Junchao Zhang, Hong Zhang](https://www.youtube.com/watch?v=4nj5XS95_GE&list=PLgFMPm27S9JrnzQmEZq54TGe5Iv8P6V_V&index=12&pp=iAQB) | 74| 2:30 pm | **PETSc Roundtable** | | 75| 3:30 pm | **Coffee Break** | | 76| 3:45 pm | **PETSc Roundtable** | | 77| 4:45 pm | Meeting Closes | | 78 79## List of Abstracts 80 81(alexander-hoover)= 82 83:::{topic} **Emergent flow asymmetries from the metachronal motion of the soft flexible paddles of the gossamer worm** 84**Alexander Hoover** 85 86Cleveland State University 87 88Metachronal waves are ubiquitous in propulsive and fluid transport systems across many different scales and morphologies in the biological world. Gossamer worms, or tomopterids, are a soft-bodied, holopelagic worm that use metachrony with their flexible, gelatinous parapodia to deftly navigate the midwater ocean column that they inhabit. In the following study, we develop a three-dimensional, fluid-structure interaction model, using the IBAMR and libmesh frameworks, of a tomopterid parapodium to explore the emergent metachronal waves formed from the interplay of passive body elasticity, active muscular tension, and hydrodynamic forces. After introducing our model, we examine the effects that varying material properties have on the stroke of an individual parapodium as well as the resulting fluid dynamics. We then explore the temporal dynamics when multiple parapodia are placed sequentially and how differences in the phase can alter the collective kinematics and resulting flow field. Finally, we examine the role of phase differences in a freely-swimming model. 89::: 90 91(mark-adams)= 92 93:::{topic} **A projection method for particle resampling** 94**Mark Adams** 95 96Lawrence Berkeley National Laboratory 97 98Particle discretizations of partial differential equations are advantageous for high-dimensional kinetic models in phase space due to their better scalability than continuum approaches with respect to dimension. Complex processes collectively referred to as particle noise hamper long time simulations with particle methods. One approach to address this problem is particle mesh adaptivity or remapping, known as particle resampling. This talk introduces a resampling method that projects particles to and from a (finite element) function space. The method is simple; using standard sparse linear algebra and finite element techniques, it can adapt to almost any set of new particle locations and preserves all moments up to the order of polynomial represented exactly by the continuum function space. 99 100This work is motivated by the Vlasov-Maxwell-Landau model of magnetized plasmas with up to six dimensions, 3X in physical space and 3V in velocity space, and is developed in the context of a 1X + 1V Vlasov-Poisson model of Landau damping with logically regular particle and continuum phase space grids. Stable long time dynamics are demonstrated up to T=500 and reproducibility artifacts and data with stable dynamics up to T=1000 are publicly available. 101::: 102 103(hansol-suh)= 104 105:::{topic} **Dense Broyden-Fletcher-Goldfarb-Shanno (BFGS)** 106**Hansol Suh** 107 108Argonne National Laboratory 109 110We will present a new dense formulation of BFGS specialize for the Limited Memory-Variable Metric (KSPLMVM) linear solver in PETSc, and illustrate its use for optimization problems. 111::: 112 113(david-wells)= 114 115:::{topic} **IBAMR: Immersed-Boundary Adaptive Mesh Refinement** 116**David Wells** 117 118University of North Carolina, Chapel Hill 119 120IBAMR is a parallel implementation of the immersed boundary method and other relevant numerics, such as Navier-Stokes and multiphase flow solvers. This presentation showcases some applications built on IBAMR and describes how they are fundamentally powered by PETSc. 121::: 122 123(joseph-pusztay)= 124 125:::{topic} **DMSwarmRT: Ray tracing with PETSc's particle management library DMSwarm** 126**Joseph Pusztay** 127 128University at Buffalo 129 130In this talk I will present work with DMSwarm, PETSc's parallel particle management library, to construct a general purpose ray trace with applicability to ICF plasma. I will discuss underlying improvements to the DMSwarm API to better support device side computation of swarm operations to facilitate the ray trace, with initial scalability tests and results. Additionally, I will present and discuss light weight time stepping objects for device side computation of systems with large numbers of fields that may be stepped independently. 131::: 132 133(cheng-chien-chen)= 134 135:::{topic} **Exploring Quantum Phases of Interacting Lattice Models via Exact Diagonalization** 136**Cheng-Chien Chen** 137 138University of Alabama at Birmingham 139 140Fermionic particles cannot occupy the same quantum state due to the Pauli exclusion principle. Therefore, solving the quantum many-body Schrödinger equation for electrons on finite-size lattices is equivalent to solving a finite-dimensional eigenvalue problem, where the matrix dimension grows exponentially with the lattice size. Here, I will discuss the exact diagonalization technique for finding the low-energy eigenstates of interacting fermionic models on two-dimensional lattices. These interacting models are shown to host a variety of emergent quantum phases, such as superconductivity and antiferromagnetism. For a sparse matrix with 34 billion basis states, the underlying code based on PETSc/SLEPc achieves a strong scaling performance of 85% linear scaling on more than 100,000 CPUs. The presentation will conclude with a brief discussion of potential future research directions, including ultra-large-scale matrix diagonalization based on matrix-free algorithms and/or quantum circuit simulations. 141::: 142 143(boyce-griffith)= 144 145:::{topic} **Cardiac Fluid Dynamics** 146**Boyce Griffith** 147 148University of North Carolina, Chapel Hill 149 150Cardiac fluid dynamics fundamentally involves interactions between complex blood flows and the structural deformations of the muscular heart walls and the thin, flexible valve leaflets. I will initially focus on models of an in vitro pulse-duplicator system that is commonly used in the development and regulation of prosthetic heart valves. These models enable detailed comparisons between experimental data and computational model predictions but use highly simplified descriptions of cardiac anatomy and physiology. I will also present recent in vitro models, focusing on a new comprehensive model of the human heart. This heart model includes fully three-dimensional descriptions of all major cardiac structures along with biomechanics models that are parameterized using experimental tensile test data obtained exclusively from human tissue specimens. Simulation results demonstrate that the model generates physiological stroke volumes, pressure-volume loops, and valvular pressure-flow relationships, thereby illustrating is its potential for predicting cardiac function in both health and disease. Time permitting, I will end the talk by describing extensions of this model to incorporate a comprehensive description of cardiac electrophysiology and electro-mechanical coupling. 151::: 152 153(chris-kees)= 154 155:::{topic} **Application of CutFEM and SCIFEM to the modeling of coastal processes through vegetation** 156**Chris Kees** 157 158Louisiana State University 159 160Understanding the effects of sea level rise on coastal ecosystems involves complex solid materials, such as mixed sediments and vegetation. Physical flume and basin studies have long been used in coastal engineering to understand wave and current dynamics around such structures. Numerical flumes based on computational fluid dynamics and fluid-structure interaction have recently begun to augment physical models for design studies, particularly for engineered structures where established Arbitrary Lagrangian-Eulerian (ALE) methods based on boundary-conforming meshes and isoparametric or isogeoemtric finite element methods are effective. The rapid growth of lidar and photogrammetrytechniques at large scales and computed tomography at small scales has introduced the possibility of constructing numerical experiments for the complex natural materials in coastal ecosystems. These methods tend to produce low-order geometric representations with uneven resolution, which are typically not appropriate for conforming mesh generation. To address this challenge, recent work extended an existing ALE method to include embedded solid dynamics using a piecewise linear CutFEM approach. The implementation is based on equivalent polynomials. The approach retains the convergence properties of the CutFEM method while having a simple implementation within the existing twophase RANS model, which has been used frequently for numerical flume studies. This presentation will consider application and performance of the method for two critical coastal processes: wave interaction with vegetation and sediment dynamics. 161::: 162 163(matt-knepley)= 164 165:::{topic} **Mesh Transformations** 166**Matt Knepley** 167 168University at Buffalo 169 170Computational meshes, as a way to partition space, form the basis of much of PDE simulation technology, for instance for the finite element and finite volume discretization methods. In complex simulations, we are often driven to modify an input mesh. For example, to refine, coarsen, extrude, change cell types, or filter it. This code can be voluminous, error-prone, spread over many special cases, and hard to understand and maintain by subsequent developers. We present a simple, table-driven paradigm for mesh transformation which can execute a large variety of transformations in a performant, parallel manner, along with experiments in the open source library PETSc which can be run by the reader. 171::: 172 173(zoe-leibowitz)= 174 175:::{topic} **Automatic Generation of Matrix-Free Routines for PDE Solvers with Devito via PETSc** 176**Zoe Leibowitz** 177 178Imperial College, London 179 180Traditional numerical solvers are often optimized for specific hardware architectures, making their adaptation to new computing environments challenging. The rapid evolution of hardware increases the complexity of rewriting and re-optimizing these solvers. By combining domain-specific languages (DSLs) with automated code generation, the level of abstraction is raised, enabling the generation of high-performance code across diverse hardware architectures. Moreover, providing users with a high-level problem specification facilitates the development of complex PDE solvers in a form closer to continuous mathematics, reducing code complexity and maximizing reuse. 181 182Devito, a DSL and compiler for finite-difference solvers, has been extended to integrate iterative solver functionality through an interface with PETSc, enabling the generation of solvers for various computational fluid dynamics (CFD) problems. As an industry-standard framework, Devito automates the generation of highly optimized explicit finite-difference kernels and stencil computations and has been extensively used in large-scale seismic inversion and medical imaging applications. The new developments introduce automatic generation of matrix-free routines in Devito, allowing interaction with PETSc’s suite of solvers. Key enhancements include support for iterative solvers, implicit time-stepping, coupled solvers, and matrix-free preconditioning. These features are fully integrated into Devito’s symbolic API while maintaining compatibility with staggered grids, subdomains, and custom stencils. 183 184This work expands Devito’s capabilities, enabling it to address a broader range of high-performance computing challenges, including incompressible flow problems in CFD. The new framework is demonstrated through benchmark simulations, including the backward-facing step and flow around a cylinder. 185::: 186 187(david-salac)= 188 189:::{topic} **PetscFD: Simplifying PDE Solutions** 190**David Salac** 191 192University at Buffalo 193 194This talk will outline recent efforts to include finite difference operations in PETSc through the addition of PetscFD. We begin by formally exploring the concept of stencil composition, showing that resulting stencil will have an accuracy equal to the lower of the two stencils being composed. The basic outline of PetscFD is then provided, in addition to several high-level functions that return matrices for arbitrary derivatives. Finally, the usage of PetscFD is demonstrated via several canonical examples. 195::: 196 197(margarete-jadamec)= 198 199:::{topic} **Implications of Rheology and Plate Geometry on Plate Tectonics** 200**Margarete Jadamec** 201 202University at Buffalo 203 204Plate tectonic theory provides a self-consistent, first order explanation of the distribution of earthquakes, volcanoes, and mountain belts on Earth, thus forming a comprehensive framework for interpreting how internal processes are expressed at the Earth’s surface. Inherent in the tenet of plate tectonics is that the plates are internally rigid with deformation concentrated at the boundaries. However, adequately capturing the relevant physics that allows for both strong plate interiors and weak boundaries, and then numerically implementing the complex rheologies in software to model the time-dependent evolution of plate motion and subduction remains a challenge. A series of (a) two-dimensional models of generalized subduction and (b) three-dimensional, data-driven models of natural subduction are presented that examine how the subducting plate geometry, coupling along the subduction interface, and a non-linear mantle rheology control surface plate motion, viscous flow in the asthenosphere, and length-scales of decoupling between the plates and asthenosphere at convergent plate boundaries. The non-linear, visco-plastic rheology and complex subducted plate geometries require high-performance computing and optimized numerical solvers to resolve the flow dynamics. Results show the incorporation of a strain-rate dependent rheology allows for dynamic decoupling between the lithosphere and asthenosphere at subduction zones facilitating self-sustaining plate tectonics. In addition, the three-dimensional models produce dynamic upwelling off-axis from the subducted slab edge, suggesting a new mechanism to explain anomalous volcanism observed at lateral subduction zone terminations. 205::: 206 207(conor-ward)= 208 209:::{topic} **pyop3: A DSL for Unstructured Mesh Stencil Calculations** 210**Conor Ward** 211 212Imperial College, London 213 214pyop3 is a new domain-specific language that automates the application of local computational kernels over a mesh, termed 'unstructured mesh stencil calculations’. Such operations are ubiquitous across simulation methods including the finite element method and finite volume method, as well as preconditioners, slope limiters, and more. Written in Python, pyop3 takes advantage of some novel abstractions for describing mesh data (think generalised `PetscSection`) to describe complex mesh loops in a concise way that is agnostic to the underlying data layout. Having described the computation to be performed, pyop3 then uses just-in-time compilation to generate high-performance C code (CUDA/HIP coming soon) and coordinates its execution in parallel using MPI. 215 216pyop3 is built on top of PETSc, wrapping many of its data types, and the design of the new data layout abstractions are strongly influenced by DMPlex. 217 218This talk will introduce some of the novel abstractions that enable pyop3’s functionality before giving some examples of the sorts of computations that are expressible and the resulting code that is generated. 219::: 220 221(darsh-nathawani)= 222 223:::{topic} **Proteus Toolkit** 224**Darsh Nathawani** 225 226Louisiana State University 227 228Proteus is a python package to solve PDEs using traditional and state-of-the-art numerical models. Proteus uses several C, C++ and Fortran libraries either as an external package or a part of Proteus. PETSc is a vital part of the development of Proteus. The objective of this talk is to introduce Proteus, explain how to get it and use it, and some initial performance tests using the Poisson problem and provide comparison with PETSc. This scaling analysis is a crucial part for a guidance to better design efficient algorithms. 229::: 230 231(tim-steinhoff)= 232 233:::{topic} **Using PETSc in a Multi-application Environment** 234**Tim Steinhoff** 235 236Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH 237 238In this talk we provide an overview of the use of PETSc in the context of the code family AC<sup>2</sup> which is developed and distributed by GRS. AC<sup>2</sup> consists of multiple codes and is used to simulate the behavior of nuclear reactors during operation, transients, design basis and beyond design basis accidents up to radioactive releases to the environment. Access to PETSc is controlled by the self-developed wrapper NuT (Numerical Toolkit). We present a brief rundown of historical developments introducing NuT and therefore PETSc to handle certain numerical subtasks in AC<sup>2</sup>. This is accompanied by a deeper look into our latest development and the challenges that come with it in order to support the time evolution of nuclide inventories in burnup and decay calculations. 239::: 240 241## Organizing Committees 242 243### Extramural Committee 244- [Blaise Bourdin](https://math.mcmaster.ca/~bourdinb/) 245- [Danny Finn](https://scholar.google.com/citations?user=l09jI6wAAAAJ&hl=en) 246- [Toby Isaac](https://tisaac.gitlab.io/triquadtethex/) 247- [Lois McInnes](https://wordpress.cels.anl.gov/curfman/) 248- [Louis Moresi](https://www.moresi.info/) 249- [Darsh Nathawani](https://darshnathawani.com/) 250- [Barry Smith](https://barrysmith.github.io/) 251- [Junchao Zhang](https://www.anl.gov/profile/junchao-zhang) 252 253### Local Committee 254- [Margarete Jadamec](https://geovizlab.geology.buffalo.edu/) 255- [Matt Jones](https://www.buffalo.edu/ccr/about-us/people/staff/jones.html) 256- [Matt Knepley](https://cse.buffalo.edu/~knepley/) 257- [Joseph Pusztay](https://www.linkedin.com/in/joseph-pusztay-174183129/) 258- [David Salac](https://engineering.buffalo.edu/mechanical-aerospace/people/faculty/d-salac.html) 259 260## Sponsors 261```{image} https://petsc.gitlab.io/annual-meetings/2025/Center-for-Computational-Research.png 262:width: 400 263``` 264```{image} https://petsc.gitlab.io/annual-meetings/2025/Institute-for-Artificial-Intelligence-and-Data-Science-color.png 265:width: 400 266``` 267 268## Questions and Meeting Discussion 269 270For questions about the meeting contact <mailto:petsc2025@lists.mcs.anl.gov>. 271Join the discussion about the meeting at [PETSc on Discord](https://discord.gg/Fqm8r6Gcyb), [2025 PETSc Annual Users Meeting channel](https://discord.com/channels/1119324534303109172/1298348560600924200). 272 273## Code of Conduct 274 275All meeting attendees are expected to follow the PETSc/NumFocus Code of Conduct. The local committee will serve as the code of conduct response team, https://numfocus.org/code-of-conduct#response-team. Should any concerns arise during the meeting, please contact any response team member. 276 277 278## Registration 279 280Please [register](https://ti.to/nf-projects/petsc-annual-meeting) to save your seat. 281Fee: \$100, for breaks and lunches; free for students. 282 283## Submit a presentation 284 285[Submit an abstract](https://docs.google.com/forms/d/126KwzajoQvcqU_q7btNsYxFqbe7rJ_vASC-tejZfXDQ) to be included in the schedule. 286We welcome talks from all perspectives, including 287 288- contributions to PETSc 289- use of PETSc in applications or libraries 290- development of libraries and packages [called from PETSc](https://petsc.org/release/install/external_software/) 291- just curious about using PETSc in applications 292 293## Student Travel Support 294 295We have funding to provide travel support for students attending the meeting without their own funding. To apply, check the 296"Student Funding Support" ticket while registering for the meeting. Early registration will increase your chance of obtaining travel support. 297 298## Suggested hotels 299 300- Hotels Near UB North 301 302 - [Motel 6 Amherst, NY](https://www.motel6.com/en/home/property/buffalo-amherst.html) 4400 Maple Rd, Amherst, NY 14226, (716) 834-2231 303 - [Hampton Inn Buffalo - Amherst](https://www.hilton.com/en/hotels/bufcphx-hampton-buffalo-amherst/) 1601 Amherst Manor Dr, Amherst, NY 14221, (716) 559-7010 304 - [Candlewood Suites Buffalo Amherst](https://www.ihg.com/candlewood/hotels/us/en/amherst/bufcw/hoteldetail?cm_mmc=GoogleMaps-_-CW-_-US-_-BUFCW) 20 Flint Rd, Amherst, NY 14226, (716) 688-2100 305 - [DoubleTree by Hilton Hotel Buffalo-Amherst](https://www.hilton.com/en/hotels/buffldt-doubletree-buffalo-amherst/) 10 Flint Rd, Amherst, NY 14226, (716) 689-4414 306 - [Comfort Inn University](https://www.choicehotels.com/new-york/amherst/comfort-inn-hotels/ny293?mc=llgoxxpx) 1 Flint Rd, Amherst, NY 14226, (716) 415-1132 307 - [Fairfield Inn & Suites Buffalo Amherst/University](https://www.marriott.com/en-us/hotels/buffn-fairfield-inn-and-suites-buffalo-amherst-university/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0) 3880 Rensch Rd, Amherst, NY 14228, (716) 204-8936 308 - [Staybridge Suites Buffalo-Amherst by IHG](https://www.ihg.com/staybridge/hotels/us/en/amherst/bufrr/hoteldetail?cm_mmc=GoogleMaps-_-SB-_-US-_-BUFRR}) 1290 Sweet Home Rd, Amherst, NY 14228, (716) 276-8750 309 310 311- Hotels in Downtown Buffalo 312 313 - [Holiday In Express & Suites Buffalo Downtown-Medical Ctr by IHG](https://www.ihg.com/holidayinnexpress/hotels/us/en/buffalo/bufms/hoteldetail?cm_mmc=GoogleMaps-_-EX-_-US-_-BUFMS) 601 Main St, Buffalo, NY 14203, (716) 854-5500, Located near a subway station 314 - [Hilton Garden Inn Buffalo Downtown](https://www.hilton.com/en/hotels/bufmsgi-hilton-garden-inn-buffalo-downtown/?SEO_id=GMB-AMER-GI-BUFMSGI&y_source=1_MjA4MTcyMy03MTUtbG9jYXRpb24ud2Vic2l0ZQ%3D%3D) 10 Lafayette Square, Buffalo, NY 14203, (716) 848-1000, Located near a subway station 315 - [Hampton Inn & Suites Buffalo Downtown](https://www.hilton.com/en/hotels/bufdthx-hampton-suites-buffalo-downtown/?SEO_id=GMB-AMER-HX-BUFDTHX&y_source=1_MjA4MzA5Ny03MTUtbG9jYXRpb24ud2Vic2l0ZQ%3D%3D) 220 Delaware Ave, Buffalo, NY 14202, (716) 855-2223, Located near Chippewa St/Nightlife 316 - [Embassy Suites by Hilton Buffalo](https://www.hilton.com/en/hotels/bufeses-embassy-suites-buffalo/?SEO_id=GMB-AMER-ES-BUFESES&y_source=1_MTEwOTkxNC03MTUtbG9jYXRpb24ud2Vic2l0ZQ%3D%3D) 200 Delaware Ave, Buffalo, NY 14202, (716) 842-1000, Located near Chippewa St/Nightlife 317 - [Curtiss Hotel](https://curtisshotel.com/) 210 Franklin St, Buffalo, NY 14202, (716) 954-4900, Located near Chippewa St/Nightlife 318
