Exposing MPI Objects for Debugging

Laust Brock-Nannestad; John DelSignore; Jeffrey M. Squyres; Sven  Karlsson; Kathryn Mohror

Abstract

Developers rely on debuggers to inspect application state. In applications that use MPI, the Message Passing Interface, the MPI runtime contains an important part of this state. The MPI Tools Working Group has proposed an interface for MPI Handle Introspection. It allows debuggers and MPI implementations to cooperate in extracting information from MPI objects. Information that can then be presented to the developer. MPI Handle Introspection provides a more general interface than previous work, such as Message Queue Dumping.
We add support for introspection to the TotalView debugger and a development version of Open MPI. We explain the interactions between the debugger and MPI library and demonstrate how MPI Handle Introspection raises the abstraction level to simplify debugging of MPI related programming errors.

Original language	English
Publication date	2014
Number of pages	2
Publication status	Published - 2014
Event	International Conference for High Performance Computing, Networking, Storage and Analysis, SC14 - New Orleans, United States Duration: 16 Nov 2014 → 21 Nov 2014 http://sc14.supercomputing.org/

Conference

Conference	International Conference for High Performance Computing, Networking, Storage and Analysis, SC14
Country/Territory	United States
City	New Orleans
Period	16/11/2014 → 21/11/2014
Internet address	http://sc14.supercomputing.org/

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http://sc14.supercomputing.org/sites/all/themes/sc14/files/archive/tech_poster/tech_poster_pages/post284.html

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Brock-Nannestad, L., DelSignore, J., Squyres, J. M., Karlsson, S., & Mohror, K. (2014). Exposing MPI Objects for Debugging. Abstract from International Conference for High Performance Computing, Networking, Storage and Analysis, SC14, New Orleans, United States. http://sc14.supercomputing.org/sites/all/themes/sc14/files/archive/tech_poster/tech_poster_pages/post284.html

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Brock-Nannestad, L, DelSignore, J, Squyres, JM, Karlsson, S & Mohror, K 2014, 'Exposing MPI Objects for Debugging', International Conference for High Performance Computing, Networking, Storage and Analysis, SC14, New Orleans, United States, 16/11/2014 - 21/11/2014. <http://sc14.supercomputing.org/sites/all/themes/sc14/files/archive/tech_poster/tech_poster_pages/post284.html>

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AU - Brock-Nannestad, Laust

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AU - Squyres, Jeffrey M.

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AU - Mohror, Kathryn

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N2 - Developers rely on debuggers to inspect application state. In applications that use MPI, the Message Passing Interface, the MPI runtime contains an important part of this state. The MPI Tools Working Group has proposed an interface for MPI Handle Introspection. It allows debuggers and MPI implementations to cooperate in extracting information from MPI objects. Information that can then be presented to the developer. MPI Handle Introspection provides a more general interface than previous work, such as Message Queue Dumping. We add support for introspection to the TotalView debugger and a development version of Open MPI. We explain the interactions between the debugger and MPI library and demonstrate how MPI Handle Introspection raises the abstraction level to simplify debugging of MPI related programming errors.

AB - Developers rely on debuggers to inspect application state. In applications that use MPI, the Message Passing Interface, the MPI runtime contains an important part of this state. The MPI Tools Working Group has proposed an interface for MPI Handle Introspection. It allows debuggers and MPI implementations to cooperate in extracting information from MPI objects. Information that can then be presented to the developer. MPI Handle Introspection provides a more general interface than previous work, such as Message Queue Dumping. We add support for introspection to the TotalView debugger and a development version of Open MPI. We explain the interactions between the debugger and MPI library and demonstrate how MPI Handle Introspection raises the abstraction level to simplify debugging of MPI related programming errors.

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