OpenACC-to-OpenMP5-for-LULESH

This repository accompanies the study "Can We Achieve Competitive OpenMP Offload Performance by Simply Translating from OpenACC?", focusing on the LULESH (Livermore Unstructured Lagrangian Explicit Shock Hydrodynamics) mini-app.

Repository Contents

The repository contains multiple implementations of LULESH:

• HeCBench LULESH OpenMP 4.5 and CUDA – Original OpenMP 4.5 offload implementation and CUDA version from the HeCBench suite.
• LULESH-OpenACC – OpenACC version of LULESH.
• LULESH-OpenACC-translation – Automatically translated version of LULESH-OpenACC using the Intel Application Migration Tool for OpenACC to OpenMP 5.0 (contribution of this work).

Goal

The purpose of this work is to evaluate whether competitive OpenMP offload performance can be achieved by directly translating an existing OpenACC application, without extensive manual optimizations.

Compilation & Execution

Each implementation resides in its own subdirectory and can be compiled and executed independently.

General Steps

1. Navigate to the desired version’s directory.
2. Compile with make.
3. Run (for example) with ./lulesh2.0 -s 300 -i 100.