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Persistent URL http://purl.org/net/epubs/work/30692911
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Record Id 30692911
Title A new sparse LDLT solver using A Posteriori Threshold Pivoting
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Abstract We describe version 2.0 of the SPRAL Sparse Symmetric Indefinite Direct Solver (SSIDS). Version 1 performed the factorization only on a single GPU. The new version adds support for CPU and hybrid execution, capable of utilising multiple GPUs. Notably, the CPU algorithm uses OpenMP 4.0 tasks to implement a multifrontal algorithm with dense factorizations using a posteriori threshold pivoting based on the same threshold technique as traditional threshold partial pivoting.
Organisation STFC , SCI-COMP , SCI-COMP-CM
Keywords OpenMP , sparse symmetric factorization , a posteriori pivoting , indefinite systems
Funding Information EC, EU Horizon 2020 Research and Innovation Programme (NLAFET) (671633)
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report RAL Technical Reports RAL-TR-2016-017. 2016. RAL-TR-2016-017.pdf 2016
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