amgX as pure on GPU external, distributed memory, linear algebra library using MPI?
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Description
Hello,
I am not sure about the underlying multi GPU concept of amgX.
The application I have in mind has the following features:
- distributed memory CFD domain decomposition using scotch
- MPI parallelism
- pure on GPU simulation including linear algebra avoiding CPU<->GPU data transfers at each timestep apart from the process boundaries (GPU<->GPU via PCIE) = not just CPU->GPU offloading of the linear algebra solvers
Are the amgX solvers build on the GPU?
Is there an example of a distributed memory/MPI implementation to possibly leverage amgX as an external, pure on GPU matrix solver library?
Klaus
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Research direction
No files, tests, or entry points are named. Start by reviewing the AMGX documentation and the existing issue discussion for GPU solver behavior and distributed-memory/MPI support. Done would require a confirmed answer or a defined implementation scope for a pure-GPU MPI integration example.
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Assessment
- Domain
- distributed-systems
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 15/100