Details

Autor(en) / Beteiligte

• Laguna, Ignacio
• Richards, David F
• Gamblin, Todd
• Schulz, Martin
• de Supinski, Bronis R
• Mohror, Kathryn
• Pritchard, Howard

Titel

Evaluating and extending user-level fault tolerance in MPI applications

Ist Teil von

• The international journal of high performance computing applications, 2016-08, Vol.30 (3), p.305-319

Ort / Verlag

London, England: SAGE Publications

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The user-level failure mitigation (ULFM) interface has been proposed to provide fault-tolerant semantics in the Message Passing Interface (MPI). Previous work presented performance evaluations of ULFM; yet questions related to its programability and applicability, especially to non-trivial, bulk synchronous applications, remain unanswered. In this article, we present our experiences on using ULFM in a case study with a large, highly scalable, bulk synchronous molecular dynamics application to shed light on the advantages and difficulties of this interface to program fault-tolerant MPI applications. We found that, although ULFM is suitable for master–worker applications, it provides few benefits for more common bulk synchronous MPI applications. To address these limitations, we introduce a new, simpler fault-tolerant interface for complex, bulk synchronous MPI programs with better applicability and support than ULFM for application-level recovery mechanisms, such as global rollback.