Matches in SemOpenAlex for { <https://semopenalex.org/work/W2944855358> ?p ?o ?g. }
Showing items 1 to 49 of
49
with 100 items per page.
- W2944855358 abstract "Abstract Top supercomputers in the TOP500 list have transitioned from homogeneous node architectures toward heterogeneous manycore nodes with accelerators and CPUs. These new architectures present significant challenges to developers of large-scale multiphysics applications, especially at DOE laboratories that have invested heavily in scalable MPI codes over decades. Much of these scientific application porting efforts for the new heterogeneous architectures are focused on running the computation on the accelerators, which usually comprise > 90% of the FLOPS of the system, typically using one core per GPU to offload work. We describe an approach to utilizing the remaining FLOPS on a heterogeneous machine by running a portion of the computation on the CPUs cooperatively with the GPU computation. Orthogonally, we evaluate using the additional cores to also offload work to GPUs, effectively oversubscribing the GPUs. We present a proof-of-concept implementation in ARES, a multiphysics ALE-AMR code at LLNL. ARES uses a portability layer, RAJA, which enables us to utilize the same source code for both the CPU and the GPU. We develop an approach to utilize both types of processors cooperatively in a heterogeneous system. Our implementation divides the work between the computing resources via domain decomposition, and utilizes all cores of the CPU and all of the GPUs on the node for computation. Load balancing is necessary to use the heterogeneous resources effectively. We present preliminary results on early delivery pre-Sierra machines at LLNL, showing up to 40% performance benefit of oversubscribing the GPUs (with caveats), and up to an 18% performance benefit of using the CPUs on the heterogeneous nodes for computing in addition to using the GPUs." @default.
- W2944855358 created "2019-05-29" @default.
- W2944855358 creator A5012779678 @default.
- W2944855358 date "2019-09-01" @default.
- W2944855358 modified "2023-10-17" @default.
- W2944855358 title "Exploring utilization options of heterogeneous architectures for multi-physics simulations" @default.
- W2944855358 cites W1993338334 @default.
- W2944855358 cites W2063861626 @default.
- W2944855358 cites W2078325682 @default.
- W2944855358 cites W2078794610 @default.
- W2944855358 doi "https://doi.org/10.1016/j.parco.2019.05.003" @default.
- W2944855358 hasPublicationYear "2019" @default.
- W2944855358 type Work @default.
- W2944855358 sameAs 2944855358 @default.
- W2944855358 citedByCount "3" @default.
- W2944855358 countsByYear W29448553582019 @default.
- W2944855358 countsByYear W29448553582020 @default.
- W2944855358 countsByYear W29448553582021 @default.
- W2944855358 crossrefType "journal-article" @default.
- W2944855358 hasAuthorship W2944855358A5012779678 @default.
- W2944855358 hasBestOaLocation W29448553583 @default.
- W2944855358 hasConcept C121332964 @default.
- W2944855358 hasConcept C171250308 @default.
- W2944855358 hasConcept C192562407 @default.
- W2944855358 hasConcept C41008148 @default.
- W2944855358 hasConceptScore W2944855358C121332964 @default.
- W2944855358 hasConceptScore W2944855358C171250308 @default.
- W2944855358 hasConceptScore W2944855358C192562407 @default.
- W2944855358 hasConceptScore W2944855358C41008148 @default.
- W2944855358 hasFunder F4320338286 @default.
- W2944855358 hasLocation W29448553581 @default.
- W2944855358 hasLocation W29448553582 @default.
- W2944855358 hasLocation W29448553583 @default.
- W2944855358 hasOpenAccess W2944855358 @default.
- W2944855358 hasPrimaryLocation W29448553581 @default.
- W2944855358 hasRelatedWork W1536502753 @default.
- W2944855358 hasRelatedWork W2748952813 @default.
- W2944855358 hasRelatedWork W2899084033 @default.
- W2944855358 hasRelatedWork W2902782467 @default.
- W2944855358 hasRelatedWork W2935759653 @default.
- W2944855358 hasRelatedWork W3105167352 @default.
- W2944855358 hasRelatedWork W54078636 @default.
- W2944855358 hasRelatedWork W1501425562 @default.
- W2944855358 hasRelatedWork W2954470139 @default.
- W2944855358 hasRelatedWork W3084825885 @default.
- W2944855358 isParatext "false" @default.
- W2944855358 isRetracted "false" @default.
- W2944855358 magId "2944855358" @default.
- W2944855358 workType "article" @default.