Section: Software and Platforms

APOLLO software and LLVM

Participants : Aravind Sukumaran-Rajam, Juan Manuel Martinez Caamaño, Willy Wolff, Alexandra Jimborean, Jean-François Dollinger, Philippe Clauss.

We are developing a new framework called APOLLO (Automatic speculative POLyhedral Loop Optimizer) whose main concepts are based on our previous framework VMAD. However, several important implementation issues are now handled differently in order to improve the performance and usability of the framework, and also to open its evolution to new interesting perspectives. Thus VMAD played the role of a prototype which is now being re-written as a sustainable tool named APOLLO. As VMAD, APOLLO is dedicated to automatic, dynamic and speculative parallelization of loop nests that cannot be handled efficiently at compile-time. It is composed of a static part consisting of specific passes in the LLVM compiler suite, plus a modified Clang frontend, and a dynamic part consisting of a runtime system. It is described in more details in subsection  6.1 .

Aravind Sukumaran-Rajam (PhD student), Juan Manuel Martinez Caamaño (PhD student), Jean-François Dollinger (PhD student), Willy Wolff (Master student) and Philippe Clauss are the main contributors of APOLLO. It will soon be distributed.