Hash Joins Meet CXL: A Fresh Look

Summary: Revisits CXL+DRAM interleaving for main-memory hash joins, presenting a phase-wise performance model that quantifies bandwidth gains versus CXL→DRAM data-movement costs. Shows selective partial movement of relations to DRAM often outperforms full relocation and offers practical guidelines for CXL-aware operator design. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID: 568
Venue: CIDR
Year: 2026
Pagerank: 5.093636e-05
Overall Rank: 10,115 | 30.61%
DOI: -

Incoming Non-self Citations Over Time

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Authors

1. Wentao Huang (National University of Singapore)
2. Mian Lu (4Paradigm Inc.)
3. Kian-Lee Tan (National University of Singapore)

BibTeX Citation

@inproceedings{huang_cidr26,
        address = {Amsterdam, Netherlands},
        series = {{CIDR} '26},
        title = {{Hash Joins Meet CXL: A Fresh Look}},
        booktitle = {Proceedings of the {Conference} on {Innovative} {Data} {Systems} {Research}},
        author = {Huang, Wentao and Lu, Mian and Tan, Kian-Lee},
        year = {2026}
}

Incoming Citations (Sorted by Pagerank)

Showing 0 of 0 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank

Outgoing Citations (Sorted by Pagerank)

Showing 10 of 10 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
29	Database Architecture Optimized for the New Bottleneck: Memory Access	1999	VLDB	0.00052093615
360	Design and Evaluation of Main Memory Hash Join Algorithms for Multi-core CPUs	2011	SIGMOD	0.00020182846
1,265	An Experimental Comparison of Thirteen Relational Equi-Joins in Main Memory	2016	SIGMOD	0.00011415709
2,962	To Partition, or Not to Partition, That is the Join Question in a Real System	2021	SIGMOD	7.9170451e-05
4,861	CXL and the Return of Scale-Up Database Engines	2024	VLDB	6.4747307e-05
6,198	Database Kernels: Seamless Integration of Database Systems and Fast Storage via CXL	2024	CIDR	5.945932e-05
7,235	An Examination of CXL Memory Use Cases for In-Memory Database Management Systems using SAP HANA	2024	VLDB	5.6655351e-05
8,381	Pasha: An Efficient, Scalable Database Architecture for CXL Pods	2025	CIDR	5.4377136e-05
8,609	CXL Memory Performance for In-Memory Data Processing	2025	VLDB	5.4023412e-05
8,904	A Design Space Exploration and Evaluation for Main-Memory Hash Joins in Storage Class Memory	2023	VLDB	5.3483178e-05

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