Xuehai Qian, Koushik Sen, Paul H. Hargrove, Costin Iancu
{"title":"单侧通信的确定性子组重放","authors":"Xuehai Qian, Koushik Sen, Paul H. Hargrove, Costin Iancu","doi":"10.1145/2925426.2926264","DOIUrl":null,"url":null,"abstract":"Replay of parallel execution is required by HPC debuggers and resilience mechanisms. Up-to-date, there is no existing deterministic replay solution for one-sided communication. The essential problem is that the readers of updated data do not have any information on which remote threads produced the updates, the conventional happens-before based ordering tracking techniques are challenging to work at scale. This paper presents SReplay, the first software tool for sub-group deterministic record and replay for one-sided communication. SReplay allows the user to specify and record the execution of a set of threads of interest (sub-group), and then deterministically replays the execution of the sub-group on a local machine without starting the remaining threads. SReplay ensures sub-group determinism using a hybrid data- and order-replay technique. SReplay maintains scalability by a combination of local logging and approximative event order tracking within sub-group. Our evaluation on deterministic and nondeterministic UPC programs shows that SReplay introduces an overhead ranging from 1.3x to 29x, when running on 1,024 cores and tracking up to 16 threads.","PeriodicalId":422112,"journal":{"name":"Proceedings of the 2016 International Conference on Supercomputing","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"SReplay: Deterministic Sub-Group Replay for One-Sided Communication\",\"authors\":\"Xuehai Qian, Koushik Sen, Paul H. Hargrove, Costin Iancu\",\"doi\":\"10.1145/2925426.2926264\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Replay of parallel execution is required by HPC debuggers and resilience mechanisms. Up-to-date, there is no existing deterministic replay solution for one-sided communication. The essential problem is that the readers of updated data do not have any information on which remote threads produced the updates, the conventional happens-before based ordering tracking techniques are challenging to work at scale. This paper presents SReplay, the first software tool for sub-group deterministic record and replay for one-sided communication. SReplay allows the user to specify and record the execution of a set of threads of interest (sub-group), and then deterministically replays the execution of the sub-group on a local machine without starting the remaining threads. SReplay ensures sub-group determinism using a hybrid data- and order-replay technique. SReplay maintains scalability by a combination of local logging and approximative event order tracking within sub-group. Our evaluation on deterministic and nondeterministic UPC programs shows that SReplay introduces an overhead ranging from 1.3x to 29x, when running on 1,024 cores and tracking up to 16 threads.\",\"PeriodicalId\":422112,\"journal\":{\"name\":\"Proceedings of the 2016 International Conference on Supercomputing\",\"volume\":\"15 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 2016 International Conference on Supercomputing\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1145/2925426.2926264\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 2016 International Conference on Supercomputing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/2925426.2926264","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
SReplay: Deterministic Sub-Group Replay for One-Sided Communication
Replay of parallel execution is required by HPC debuggers and resilience mechanisms. Up-to-date, there is no existing deterministic replay solution for one-sided communication. The essential problem is that the readers of updated data do not have any information on which remote threads produced the updates, the conventional happens-before based ordering tracking techniques are challenging to work at scale. This paper presents SReplay, the first software tool for sub-group deterministic record and replay for one-sided communication. SReplay allows the user to specify and record the execution of a set of threads of interest (sub-group), and then deterministically replays the execution of the sub-group on a local machine without starting the remaining threads. SReplay ensures sub-group determinism using a hybrid data- and order-replay technique. SReplay maintains scalability by a combination of local logging and approximative event order tracking within sub-group. Our evaluation on deterministic and nondeterministic UPC programs shows that SReplay introduces an overhead ranging from 1.3x to 29x, when running on 1,024 cores and tracking up to 16 threads.