{"id":41698292,"url":"https://github.com/adarshpatil/dve","last_synced_at":"2026-01-24T20:55:11.602Z","repository":{"id":78674856,"uuid":"347147418","full_name":"adarshpatil/dve","owner":"adarshpatil","description":"Improving DRAM Reliability and Performance On-Demand via Coherent Replication [ISCA 2021]","archived":false,"fork":false,"pushed_at":"2022-06-10T10:23:39.000Z","size":178,"stargazers_count":7,"open_issues_count":0,"forks_count":1,"subscribers_count":2,"default_branch":"master","last_synced_at":"2024-04-24T18:55:47.591Z","etag":null,"topics":["coherence","dram","reliability","replication","sockets"],"latest_commit_sha":null,"homepage":"https://adar.sh/dve","language":"Objective-C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/adarshpatil.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null}},"created_at":"2021-03-12T17:37:13.000Z","updated_at":"2024-01-29T20:59:50.000Z","dependencies_parsed_at":"2023-03-12T05:01:38.212Z","dependency_job_id":null,"html_url":"https://github.com/adarshpatil/dve","commit_stats":{"total_commits":22,"total_committers":2,"mean_commits":11.0,"dds":"0.31818181818181823","last_synced_commit":"c780dd68046770b746922315374c8f1b113d6cf9"},"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/adarshpatil/dve","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/adarshpatil%2Fdve","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/adarshpatil%2Fdve/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/adarshpatil%2Fdve/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/adarshpatil%2Fdve/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/adarshpatil","download_url":"https://codeload.github.com/adarshpatil/dve/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/adarshpatil%2Fdve/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28736791,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-24T19:23:36.361Z","status":"ssl_error","status_checked_at":"2026-01-24T19:23:28.966Z","response_time":89,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["coherence","dram","reliability","replication","sockets"],"created_at":"2026-01-24T20:55:11.119Z","updated_at":"2026-01-24T20:55:11.593Z","avatar_url":"https://github.com/adarshpatil.png","language":"Objective-C","funding_links":[],"categories":[],"sub_categories":[],"readme":"\n# ![Dve thumb](http://timewarp.adarshpatil.in/images/projects/dve/dve-thumb.png) Dvé: Coherent Replication Protocol\n\nDvé is a memory system architecture to improve the reliability and performance of DRAM main memory. This repository contains all artifacts used to experimentally evaluate Dvé [[ISCA '21 paper]](https://www.cs.utah.edu/~rajeev/pubs/isca21.pdf). \n\n# Features of Dvé:\n- Replicates memory on two different sockets of a multi socket NUMA system\n![NUMA Replication](http://timewarp.adarshpatil.in/images/projects/dve/numa-replication.jpg)\n- Modifies NUMA cache coherence communication by introducing replica directory to permit local replica access \n![Coherent Replication](http://timewarp.adarshpatil.in/images/projects/dve/coherent-replication.jpg) \u003cbr/\u003e\n\u003csub\u003e(Figure shows coherence communications in (a) Baseline NUMA (b) Dvé (c) Logical View)\u003c/sub\u003e\n- Proposes two protocol families — allow-based and deny-based — to achieve Coherent Replication \n- Protocol Optimizations to further improve performance \n\t- Speculative replica access\n\t- Coarse-grained replica directory\n\t- Sampling based dynamic protocol\n\n\n# Repository contents\n1.  gem5 based implementation of Coherent Replication (forked from [VANDAL/SynchroTrace-gem5](https://github.com/VANDAL/SynchroTrace-gem5))\\\n\tThe repo contains implementation of the baseline, proposed protocols and a variant of Intel's Mirroring implementation.\n\t - numa-baseline: multi-socket NUMA baseline configuration\n\t - deny-based protocol implementation\n\t - allow-based protocol implementation\n\t - intel-intel-ch-replication: An extention of Intel's Address Range Partial Mirroring implementation with read requests load balanced between both channels (requests are alternated between channels)\n\n2. Trace generator (forked from [VANDAL/prism](https://github.com/VANDAL/prism))\n\n3. Coherence protocol [specification](https://github.com/adarshpatil/dve/blob/master/Dve-ISCA21-Appendix.pdf) in table format.\n\n4. [Murphi model](https://github.com/adarshpatil/dve/tree/master/murphi-model) for allow-based and deny-based protocol (generated using [ProtoGen](https://github.com/icsa-caps/ProtoGen))\n\n# Additional Material\n- Full Protocol Model Checking and Verification files are available in this [github source repo](https://github.com/Errare-humanum-est/Dve_Protocol_Model_Check)\n\n- FAQ, talk videos, slides - [https://adar.sh/dve](https://adar.sh/dve)\n\n# Referencing our work\n\nIf you are using Dvé for your work, please cite:**\n\n```\n@inproceedings{dve-isca21,\n\tauthor = {Patil, Adarsh and Nagarajan, Vijay and Balasubramonian, Rajeev and Oswald, Nicolai},\n\ttitle = {Dvé: Improving DRAM Reliability and Performance On-Demand via Coherent Replication},\n\tyear = {2021},\n\tpublisher = {IEEE Press},\n\tbooktitle = {Proceedings of the ACM/IEEE 48th Annual International Symposium on Computer Architecture},\n\tpages = {526–539},\n\tnumpages = {14},\n\tkeywords = {Memory Systems, DRAM, Reliability, Coherence},\n\tlocation = {Virtual Event},\n\tseries = {ISCA '21}\n}\n```\n--------------------------------------------------------------\nThe title of the project is derived from the Sankrit word (द्वे) which means \"the two\",\nreferring here to the dual benefits of replication.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fadarshpatil%2Fdve","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fadarshpatil%2Fdve","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fadarshpatil%2Fdve/lists"}