Adaptive MPI Multirail Tuning for Non-Uniform Input/Output Access

Abstract : Multicore processors have not only reintroduced Non-Uniform Memory Access (NUMA) architectures in nowadays parallel computers, but they are also responsible for non-uniform access times with respect to Input/Output devices (NUIOA). In clusters of multicore machines equipped with several Network Interfaces, performance of communication between processes thus depends on which cores these processes are scheduled on, and on their distance to the Network Interface Cards involved. We propose a technique allowing multirail communication between processes to carefully distribute data among the network interfaces so as to counterbalance NUIOA effects. We demonstrate the relevance of our approach by evaluating its implementation within OpenMPI on a Myri-10G + InfiniBand cluster.
Document type :
Conference papers
Springer. The 17th European MPI Users Group conference, Sep 2010, Stuttgart, Germany. 6305, pp.239-248, 2010, Lecture Notes in Computer Science; Recent Advances in the Message Passing Interface. The 17th European MPI User's Group Meeting (EuroMPI 2010). <10.1007/978-3-642-15646-5_25>


https://hal.inria.fr/inria-00486178
Contributor : Brice Goglin <>
Submitted on : Tuesday, May 25, 2010 - 11:42:22 AM
Last modification on : Monday, April 23, 2012 - 4:41:04 PM

File

article.pdf
fileSource_public_author

Identifiers

Collections

Citation

Stéphanie Moreaud, Brice Goglin, Raymond Namyst. Adaptive MPI Multirail Tuning for Non-Uniform Input/Output Access. Springer. The 17th European MPI Users Group conference, Sep 2010, Stuttgart, Germany. 6305, pp.239-248, 2010, Lecture Notes in Computer Science; Recent Advances in the Message Passing Interface. The 17th European MPI User's Group Meeting (EuroMPI 2010). <10.1007/978-3-642-15646-5_25>. <inria-00486178>

Export

Share

Metrics

Consultation de
la notice

411

Téléchargement du document

154