2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI)最新文献

IPMPI: Improved MPI Communication Logger 改进的MPI通信记录器

2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI) Pub Date : 2022-11-01 DOI: 10.1109/ExaMPI56604.2022.00009

Tushar Agrawal, Preeti Malakar

引用次数: 0

Message from the ExaMPI22 Workshop Chairs 来自ExaMPI22工作坊主席的信息

2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI) Pub Date : 2022-11-01 DOI: 10.1109/exampi56604.2022.00004

引用次数: 0

Accelerating Data Serialization/Deserialization Protocols with In-Network Compute 利用网络内计算加速数据序列化/反序列化协议

2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI) Pub Date : 2022-11-01 DOI: 10.1109/ExaMPI56604.2022.00008

Shiyi Cao, S. D. Girolamo, T. Hoefler

{"title":"Accelerating Data Serialization/Deserialization Protocols with In-Network Compute","authors":"Shiyi Cao, S. D. Girolamo, T. Hoefler","doi":"10.1109/ExaMPI56604.2022.00008","DOIUrl":"https://doi.org/10.1109/ExaMPI56604.2022.00008","url":null,"abstract":"Efficient data communication is a major goal for scalable and cost-effective use of datacenter and HPC system resources. To let applications communicate efficiently, exchanged data must be serialized at the source and deserialized at the destination. The serialization/deserialization process enables exchanging data in a language- and machine-independent format. However, serialization/deserialization overheads can negatively impact application performance. For example, a server within a microservice framework must deserialize all incoming requests before invoking the respective microservices. We show how data deserialization can be offloaded to fully programmable Smart-NICs and performed on the data path, on a per-packet basis. This solution avoids intermediate memory copies, enabling on-the-fly deserialization. We showcase our approach by offloading Google Protocol Buffers, a widely used framework to serialize/deserialize data. Our evaluation demonstrates that, by offloading data deserialization to the NIC, we can achieve up to $4. 8mathrm{x}$ higher throughput than a single AMD Ryzen 7 CPU. We then show through microservice throughput modeling how we can improve the overall throughput by pipelining the deserialization and actual application activities with PsPIN.","PeriodicalId":412385,"journal":{"name":"2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122784139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compiler-enabled optimization of persistent MPI Operations 持久MPI操作的编译器支持的优化

2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI) Pub Date : 2022-11-01 DOI: 10.1109/ExaMPI56604.2022.00006

Tim Jammer, Christian H. Bischof

{"title":"Compiler-enabled optimization of persistent MPI Operations","authors":"Tim Jammer, Christian H. Bischof","doi":"10.1109/ExaMPI56604.2022.00006","DOIUrl":"https://doi.org/10.1109/ExaMPI56604.2022.00006","url":null,"abstract":"MPI is widely used for programming large HPC clusters. MPI also includes persistent operations, which specify recurring communication patterns. The idea is that the usage of those operations can result in a performance benefit compared to the standard non-blocking communication. But in current MPI implementations, this performance benefit is not really observable. We determine the message envelope matching as one of the causes of overhead. Unfortunately, this matching can only hardly be overlapped with computation. In this work, we explore how compiler knowledge can be used to extract more performance benefit from the usage of persistent operations. We find that the compiler can do some of the required matching work for persistent MPI operations. As persistent MPI requests can be used multiple times, the compiler can, in some cases, prove that message matching is only needed for the first occurrence and can be entirely skipped for subsequent instances. In this paper, we present the required compiler analysis, as well as an implementation of a communication scheme that skips the message envelope matching and directly transfers the data via RDMA instead. This allows us to substantially reduce the communication overhead that cannot be overlapped with computation. Using the Intel IMB-ASYNC Benchmark, we can see a communication overhead reduction of up to 95 percent for larger message sizes.","PeriodicalId":412385,"journal":{"name":"2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126373615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Improving Communication Asynchrony and Concurrency for Adaptive MPI Endpoints 改进自适应MPI端点的通信异步和并发性

2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI) Pub Date : 2022-11-01 DOI: 10.1109/ExaMPI56604.2022.00007

Sam White, L. Kalé

引用次数: 0

ExaMPI22 Workshop Organization 车间组织

2022 IEEE/ACM International Workshop on Exascale MPI (ExaMPI) Pub Date : 2022-11-01 DOI: 10.1109/exampi56604.2022.00005

引用次数: 0