Recent Developments in the R-Matrix Code SAMMY [Slides]
Abstract not provided.
97 MATHEMATICS AND COMPUTING↗
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Fellowship of the Resolved [Slides]
There are new evaluation methods being explored for combined RRR + URR. Simple example demonstrated in SAMMY code using. Potential to be applied to future LoFi, Medium-Fi covariance efforts. Much more work needs to be done to fully correlate regions.
Nuclear Criticality Safety Program (NCSP)↗
Effects of partitioning and scheduling sparse matrix factorization on communication and load balance
A block based, automatic partitioning and scheduling methodology is presented for sparse matrix factorization on distributed memory systems. Using experimental results, this technique is analyzed for communication and load imbalance overhead. To study the performance effects, these overheads were compared with those obtained from a straightforward 'wrap mapped' column assignment scheme. All experimental results were obtained using test sparse matrices from the Harwell-Boeing data set. The results show that there is a communication and load balance tradeoff. The block based method results in lower communication cost whereas the wrap mapped scheme gives better load balance.
Venugopal, Sesh↗