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The First Workshop on LLVM in Parallel Processing (LLPP) will be held at ICPP 2021

The LLVM framework is a vast ecosystem that stretches far beyond a "simple" C/C++ compiler. The variety of programming-language and toolchain-related parts includes the components to support a host of parallel programming models and libraries, including CUDA, HIP, OpenMP, SYCL, and the C++ parallel algorithms. In addition, LLVM serves as a vehicle for various languages in which parallelism is a first class citizen, such as Julia or Chapel. The workshop is held in conjunction with the ICPP during the workshop day. If you are interested in attending the workshop, please register at the ICPP website. Note: It has not yet been decided if the workshop will be held in person or virtual, please see the ICPP website for more information. Depending on the decision for the conference we will try to accomodate all interested parties.

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  2. About
  • Conference Dates: August 9th, 2021
  • Location: Chicago, IL, USA, or virtual (decision on June 16th, 2021)
Call For Papers

LLVM is an award-winning compiler infrastructure used in industry and academia for creating novel optimizing compilers, program analysis tools, and new programming languages. The goal of LLPP is to bring together researchers and practitioners that use LLVM for parallel processing, including but not limited on the topics of parallelism-aware compilation and optimization, parallelism- specific program analysis, and new parallel programming models and implementations.

Topics of Interest
Focus areas LLPP include but are not limited to:

  • Parallelism-aware compilation and optimization
    • Parallelism analysis in compilation
    • Parallelism-aware compiler optimizations
  • Parallel programming languages and models
    • Domain-specific parallel programming languages
    • Novel parallelism models and implementations
  • Performance analysis and tuning in LLVM
    • Performance analysis tools for parallelism
    • Tuning tools for parallel execution

Accepted papers will be published by the ACM International Conference Proceedings Series (ICPS), in conjunction with those of other ICPP workshops, in a volume entitled 50th International Conference on Parallel Processing Workshops (ICPP 2021 Workshops). This volume will be available for download via the ACM Digital Library.

Submission Guidelines
LLPP follows the same submission guidelines as the ICPP conference, please visit ICPP CFP. In brief, paper submissions should be in the US letter ACM format, not exceed 10 pages (incl. references), prepared for double-blind review, and submitted in the PDF document format. Note, short papers (up to 6 pages incl. references) are acceptable too.

Important Dates (AoE)
Paper submission: May 27th, 2021 Extended: June 6th, 2021
Author notification: June 14th, 2021 June 21st, 2021
Camera-ready submission: June 28th, 2021
Workshop date: August 9th, 2021
Submission site: ICPP submission page.

Organizing Committee
Johannes Doerfert, Argonne National Laboratory, USA
Giorgis Georgakoudis, Lawrence Livermore National Laboratory, USA

Program Committee
Florian Hahn, Apple, UK
Tina Juna, University of Saarland, Germany
Gokcen Kestor, Pacific Northwest National Laboratory, USA
EJ Park, Los Alamos National Laboratory, USA
Kiran Chandramohan, ARM, UK
Konstantinos Parasyris, Lawrence Livermore National Laboratory, USA
Jan Huckelheim, Argonne National Laboratory, USA
William Moses, Massachusetts Institute of Technology, USA


In case of any queries please reach out to the workshop organizers: Johannes Doerfert ( and Giorgis Georgakoudis (

The workshop will have proceedings. More information on the paper format is to follow. Submissions can be made by selecting the LLPP Workshop on the ICPP submission page. We will consider invited talks, tutorials, panels, and other non-research-paper submissions. Please reach out if you are interested.