Languages and compilers across data representations and machines.

@inproceedings{soi2026optimal,
  author    = {Soi, Rupanshu and Yadav, Rohan and Kjolstad, Fredrik and Aiken, Alex and Dehnavi, Maryam Mehri and Garland, Michael and Bauer, Michael},
  title     = {Optimal Software Pipelining and Warp Specialization for Tensor Core {GPUs}},
  booktitle = {20th USENIX Symposium on Operating Systems Design and Implementation (OSDI 26)},
  year      = {2026},
  month     = jul,
  pages     = {1875--1890},
  publisher = {USENIX Association},
  address   = {Seattle, WA},
  isbn      = {978-1-939133-55-7},
  url       = {https://www.usenix.org/conference/osdi26/presentation/soi}
}

Rupanshu Soi, Rohan Yadav, Fredrik Kjolstad, Alex Aiken, Maryam Mehri Dehnavi, Michael Garland, and Michael Bauer. Optimal Software Pipelining and Warp Specialization for Tensor Core GPUs. OSDI, 2026.

@article{dong2026compiler,
  author    = {Dong, James and Kjolstad, Fredrik},
  title     = {A Compiler for Fused Relational Operations on Multisets},
  journal   = {Proceedings of the ACM on Programming Languages},
  year      = {2026},
  month     = jun,
  volume    = {10},
  number    = {PLDI},
  articleno = {205},
  numpages  = {25},
  publisher = {Association for Computing Machinery},
  address   = {New York, NY, USA},
  doi       = {10.1145/3808283},
  url       = {https://doi.org/10.1145/3808283},
  keywords  = {relational algebra, databases, sparse compilation, multisets, bags}
}

James Dong and Fredrik Kjolstad. A Compiler for Fused Relational Operations on Multisets. PLDI, 2026.

@article{root2026bonsai,
  author    = {Root, Alexander J and Gyurgyik, Christophe and Goel, Purvi and Fatahalian, Kayvon and Ragan-Kelley, Jonathan and Adams, Andrew and Kjolstad, Fredrik},
  title     = {{Bonsai}: Compiling Queries to Pruned Tree Traversals},
  journal   = {Proceedings of the ACM on Programming Languages},
  year      = {2026},
  month     = jun,
  volume    = {10},
  number    = {PLDI},
  articleno = {178},
  numpages  = {29},
  publisher = {Association for Computing Machinery},
  address   = {New York, NY, USA},
  doi       = {10.1145/3808256},
  url       = {https://doi.org/10.1145/3808256},
  keywords  = {compilation, data independence, acceleration structures, tree data structures}
}

Alexander J Root, Christophe Gyurgyik, Purvi Goel, Kayvon Fatahalian, Jonathan Ragan-Kelley, Andrew Adams, and Fredrik Kjolstad. Bonsai: Compiling Queries to Pruned Tree Traversals. PLDI, 2026.

@article{gyurgyik2026decoupling,
  author    = {Gyurgyik, Christophe and Root, Alexander J and Kjolstad, Fredrik},
  title     = {Decoupling Data Layouts from Bounding Volume Hierarchies},
  journal   = {Proceedings of the ACM on Programming Languages},
  year      = {2026},
  month     = jun,
  volume    = {10},
  number    = {PLDI},
  articleno = {175},
  numpages  = {39},
  publisher = {Association for Computing Machinery},
  address   = {New York, NY, USA},
  doi       = {10.1145/3808253},
  url       = {https://doi.org/10.1145/3808253},
  keywords  = {acceleration structure, data independence, augmented tree, specialization}
}

Christophe Gyurgyik, Alexander J Root, and Fredrik Kjolstad. Decoupling Data Layouts from Bounding Volume Hierarchies. PLDI, 2026.

@article{koul2026onyx,
  author    = {Koul, Kalhan and Hsu, Olivia and Mei, Yuchen and Ravipati, Sai Gautham and Strange, Maxwell and Melchert, Jackson and Carsello, Alex and Kong, Taeyoung and Chen, Po-Han and Ke, Huifeng and Zhang, Keyi and Liu, Qiaoyi and Nyengele, Gedeon and Xie, Zhouhua and Balasingam, Akhilesh and Adivarahan, Jayashree and Sharma, Ritvik and Torng, Christopher and Emer, Joel S. and Kjolstad, Fredrik and Horowitz, Mark and Raina, Priyanka},
  title     = {{Onyx}: A 12-nm Programmable Accelerator for Dense and Sparse Applications},
  journal   = {IEEE Journal of Solid-State Circuits},
  year      = {2026},
  month     = may,
  volume    = {61},
  number    = {5},
  pages     = {2336--2348},
  publisher = {IEEE},
  doi       = {10.1109/JSSC.2025.3604724},
  url       = {https://doi.org/10.1109/JSSC.2025.3604724},
  keywords  = {Coarse-grained reconfigurable array (CGRA), compilers, computer vision, image processing, machine learning (ML), reconfigurable accelerators, sparse matrices}
}

Kalhan Koul, Olivia Hsu, Yuchen Mei, Sai Gautham Ravipati, Maxwell Strange, Jackson Melchert, Alex Carsello, Taeyoung Kong, Po-Han Chen, Huifeng Ke, Keyi Zhang, Qiaoyi Liu, Gedeon Nyengele, Zhouhua Xie, Akhilesh Balasingam, Jayashree Adivarahan, Ritvik Sharma, Christopher Torng, Joel S. Emer, Fredrik Kjolstad, Mark Horowitz, and Priyanka Raina. Onyx: A 12-nm Programmable Accelerator for Dense and Sparse Applications. IEEE JSSC, 2026.