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lsCOMP: Efficient Light Source Compression

DescriptionLight source facilities, which generate X-rays for probing microstructures and dynamic processes, produce intense data streams, reaching up to 250 GB/s and projected to exceed 1 TB/s by the end of this decade. Managing such massive data poses critical challenges due to limited local processing capacity and bandwidth constraints when offloading data to HPC systems. To address these challenges, we propose lsCOMP, a GPU compressor that operates within a single kernel. lsCOMP supports both lossless and configurable lossy compression, ensuring high compression ratios and preserved data quality across diverse light source applications. On one NVIDIA A100 GPU, lsCOMP achieves compression throughputs of 380.89 to 509.21 GB/s in lossless mode, delivering up to 20 times higher performance than industry-leading GPU compressors while achieving superior compression ratios. In lossy modes, lsCOMP further improves throughput and ratios significantly. Additionally, lsCOMP demonstrates versatile performance across various integer datasets and supports TB/s-level random access throughput.

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