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Author

Fabrizio Petrini

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Jul 2026

gMAGNUS: Fast SpGEMM on GPUs for Irregular Matrices via Hierarchical Multisplit

A novel algorithm for sparse matrix-matrix multiplication (SpGEMM) of irregular matrices on GPUs by computing an intra-row reordering of intermediate products, subdividing heavy rows into independent chunks that can be accumulated completely in local memory.

Jordi Wolfson-Pou, Ahmed E. Helal, Fabrizio Petrini · 0 citations
Book Open access Jul 2026

Closing the Efficiency Gap: AI Datacenter Co-design Roadmap for Scalable Training of LLMs

This work introduces Calculon-MoE, a tool that jointly explores FLOPS, HBM bandwidth and capacity, multiple network topologies, and popular parallelism/optimization strategies used in LLMs, and quantifies the benefits of overlapping compute and communication, hardware-accelerated collectives, widening the scale-up doma...

Jesmin Jahan Tithi, Hanjiang Wu, Joongun Park et al. · 0 citations

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