{"doi":"10.1145/3569951.3597589","title":"Rebuilding Bridges","abstract":"Bridges-2 is an NSF-funded heterogeneous supercomputing cluster at the Pittsburgh Supercomputing Center. The successor to the Bridges system (2014-2021), Bridges-2 builds on the flexibility demonstrated by its predecessor to support a wide variety of scientific workflows. This paper, building on a 2017 overview of the infrastructure supporting the original Bridges, is intended as a mid-cycle overview of the infrastructure developed to support the Bridges-2 project. It covers the lessons learned from the predecessor system, the initial design and development of the support infrastructure, modifications and improvements made over the last two years of production operations, and how those improvements have been shared with other systems and projects across the Pittsburgh Supercomputing Center.","journal":"Practice and Experience in Advanced Research Computing","year":2023,"id":411290,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":0,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9189,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2023-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1191770,"name":"Geoffrey Ryan Sablosky","orcid":"0009-0008-5927-212X","position":0,"is_corresponding":true}],"reference_count":11,"raw_metadata":null,"created_at":"2026-07-19T01:21:42.971455Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}