[llvm-dev] This Thursday -> LLVM Compiler Social, Tech-Talk: Deep Learning is the Killer App for Polyhedral Compilation

[Tobias Grosser via llvm-dev]

On Mon, Aug 6, 2018, at 15:42, Tobias Grosser wrote:
> Dear LLVM and compiler interested people,
> 
> this Thursday, 19:00, Dr. Oleksandre Zinenko will present Tensor-
> Comprehension, a Deep-Learning compiler jointly developed by Facebook, 
> ENS Paris, and ETH Zurich at the LLVM compiler social.
> 
> Tech-Talk: Deep Learning is the Killer App for Polyhedral Compilation
> 
> Deep learning approaches are successfully applied to an increasingly 
> large number of real-world problems, such as computer vision, speech or 
> weather prediction. Their efficiency comes at a high computational and 
> energy price. While the deep learning kernels are qualified as 
> “embarrassingly parallel”, their implementations often fall 
> short of exploiting the full power of modern parallel hardware. We 
> propose Tensor Comprehensions, a new domain-specific language for deep 
> learning workloads and a compilation flow combining more (LLVM) or less 
> (polyhedral, in-process autotuning) conventional techniques. The 
> language is restricted by design to the computations that can be 
> effectively analyzed in the polyhedral model, yet it covers the vast 
> majority of DL layers. Polyhedral transformation happens at a higher 
> level than in existing tools, directly capturing the relevant 
> information that otherwise would have to be extracted from a lower-level 
> intermediate representation. Currently, Tensor Comprehensions targets 
> NVidia GPUs through NVRTC or LLVM’s PTX backend, and modern CPUs 
> with vectorization and optional parallelization through the Tapir 
> extension of the LLVM IR. Initial evaluations show up to 4x speedups 
> over vendor-provided libraries on computational kernels relevant to deep 
> learning.
> 
> Oleksandr Zinenko is a research engineer at Inria and École 
> Normale Supérieure in Paris, France working on usability and 
> scalability of polyhedral compilation. He obtained his PhD from 
> University Paris-Saclay for the work on interactive program 
> restructuring. Oleksandr’s research interests include polyhedral 
> compilation, program optimization and programming languages, all from a 
> developer-centric viewpoint. He is a co-author of an interactive toolset 
> to promote and disseminate polyhedral compilation techniques.
> 
> # Registration
> 
> https://www.meetup.com/llvm-compiler-and-code-generation-socials-zurich/events/245320826/

https://www.meetup.com/llvm-compiler-and-code-generation-socials-zurich/events/cbffknyxlbmb/

> # What
> 
> A social meetup to discuss compilation and code generation questions 
> with a focus on LLVM, clang, Polly and related projects.
> 
> Our primary focus is to provide a venue (and drinks & snacks) that 
> enables free discussions between interested people without imposing an 
> agenda/program. This is a great opportunity to informally discuss your 
> own projects, get project ideas or just learn about what people at  ETH 
> and around Zurich are doing with LLVM.
> 
> Related technical presentations held by participants are welcome (please 
> contact us).
> 
> # Who:  - Anybody interested -
> 
>   - ETH students and staff
>   - LLVM developers and enthusiasts external to ETH
> 
> # When:  09.08.2018, 19:00
> 
> # Where: CAB E 72
> 
> # What is LLVM ?
> 
> LLVM (http://www.llvm.org) is an open source project that provides a 
> collection of modular compiler and toolchain technologies. It is  
> centered around a modern SSA-based compiler around which an entire 
> ecosystem of compiler technology was developed. Most well know is the 
> clang C++ compiler, which is e.g. used to deploy iOS. Beyond this a 
> diverse set of projects is developed under the umbrella of LLVM. These 
> include code generators and assemblers for various interesting
> architectures, a jit compiler, a debugger, run-time libraries (C++ 
> Standard Library, OpenMP, Opencl library), program sanity checkers, and 
> many more.
> 
> LLVM has itself grown out of a research project more than 10 years ago 
> and is the base of many exciting research projects today:
> 
> https://scholar.google.ch/scholar?cites=7792455789532680075&as_sdt=2005&sciodt=0,5&hl=de
> 
> Best,
> Tobias