search for: codelet

...lexity requires fine tuning of compiler and runtime parameters to achieve full potential performance. Autotuning substantially improves default parameters in many scenarios but it is a costly process requiring a long iterative evaluation. We propose an automatic piecewise autotuner based on CERE (Codelet Extractor and REplayer). CERE decomposes applications into small pieces called codelets: each codelet maps to a loop or to an OpenMP parallel region and can be replayed as a standalone program. Codelet autotuning achieves better speedups at a lower tuning cost. By grouping codelet invocations with...

...ing of > compiler > and runtime parameters to achieve full potential performance. Autotuning > substantially improves default parameters in many scenarios > but it is a costly process requiring a long iterative evaluation. > We propose an automatic piecewise autotuner based on CERE (Codelet > Extractor and REplayer). CERE decomposes applications into small > pieces called codelets: each codelet maps to a loop or to an OpenMP > parallel region and can be replayed as a standalone program. > Codelet autotuning achieves better speedups at a lower tuning cost. By > grouping...

Hello, We have published two papers which build upon the LLVM Compiler Infrastructure. Would it be possible to include them in the LLVM related publications at http://llvm.org/pubs/ ? I attach below the bibliographic references: "CERE: LLVM Based Codelet Extractor and REplayer for Piecewise Benchmarking and Optimization" P. de Oliveira Castro, C. Akel, E. Petit, M. Popov, and W. Jalby ACM Transactions on Architecture and Code Optimization (TACO), 2015. "Pcere: Fine-grained parallel benchmark decomposition for scalability prediction&qu...

Hello Vorbis folks, I'm one of the FFTW authors (www.fftw.org), and a few days ago I was playing with our codelet generator for fun and modified it to spit out hard-coded MDCTs of small sizes. The code (at jdj.mit.edu/~stevenj/mdct_128nr.c) for 256 samples (128 outputs) seems to be almost twice as fast as the Vorbis MDCT code for that size on my 2.2GHz P-IV (gcc 3.2.2 and flags "-O1 -mcpu=pentium4 -fomit...

...nd might provide a faster LAPACK library for the open source world. FFTW is another hugely important numerical library that could be used for benchmarking. Aside from simply getting FFTW to work using llvm-gcc, an interesting project might be to rewrite the OCaml source code in FFTW to generate codelets on-the-fly using LLVM or the CLang front-end. LLVM can probably beat GCC here, not least because an LLVM-based implementation would not be limited to a set of precompiled codelets. This could help the millions of people who use FFTW. On an unrelated note, LLVM has great potential for improving...

Hello, Everyone LLVM recently was approved to take part in Google Summer of Code 2008. We welcome everyone to apply for this program. The list of ideas for (possible) projects is located at http://llvm.org/OpenProjects.html. Surely you can suggest any other project, if you feel, that it definitely can be useful. Our common requirement for student is to submit proposal to LLVM Developers