Skip to content

GitLab

  • Menu
Projects Groups Snippets
    • Loading...
  • Help
    • Help
    • Support
    • Community forum
    • Submit feedback
    • Contribute to GitLab
  • Sign in
  • T Trilinos
  • Project information
    • Project information
    • Activity
    • Labels
    • Planning hierarchy
    • Members
  • Repository
    • Repository
    • Files
    • Commits
    • Branches
    • Tags
    • Contributors
    • Graph
    • Compare
  • Issues 936
    • Issues 936
    • List
    • Boards
    • Service Desk
    • Milestones
  • Merge requests 22
    • Merge requests 22
  • CI/CD
    • CI/CD
    • Pipelines
    • Jobs
    • Schedules
  • Deployments
    • Deployments
    • Environments
    • Releases
  • Monitor
    • Monitor
    • Incidents
  • Analytics
    • Analytics
    • Value stream
    • CI/CD
    • Repository
  • Wiki
    • Wiki
  • Snippets
    • Snippets
  • Activity
  • Graph
  • Create a new issue
  • Jobs
  • Commits
  • Issue Boards
Collapse sidebar
  • James Willenbring
  • Trilinos
  • Issues
  • #748

Closed
Open
Created Oct 28, 2016 by James Willenbring@jmwilleMaintainer3 of 6 tasks completed3/6 tasks

Belos/Tpetra: Add Pipelined CG

Created by: mhoemmen

@trilinos/belos @trilinos/tpetra

Epic: #767.

Add a Pipelined CG implementation (see e.g., work by Pieter Ghysels and Paul Eller). I'm calling this a "story" because it has a few steps:

  1. #752 (closed): Implement a generic interface to MPI_Iallreduce
  2. #753 (closed), #1013 (closed): Implement Tpetra functions for nonblocking dot products
  3. Implement a "native" Tpetra implementation of Pipelined CG (see #734 (closed) for a standard CG example)
  4. #754 (closed), #953: Make it possible to extend Belos::SolverFactory with custom Tpetra solvers
  5. Wrap the native solver in a Belos::SolverManager subclass (extending #734 (closed); include stubs for making the subclass throw if given a non-Tpetra linear algebra implementation)
  6. Actually make Pipelined CG available, using the previous steps.

Step 5 (wrapping the native Tpetra-based solver) requires a partial specialization of Belos::SolverFactory for Tpetra objects, since BelosTpetra lives downstream of Belos proper. To avoid redundant code, it would be nicer to add a internal factory for Belos' generic implementations, and then have a hook for adding a factory of implementations native to the linear algebra.

Assignee
Assign to
Time tracking