3 Search Results for "Kohli, Sumer"

Document
DOI: 10.4230/LIPIcs.ECOOP.2025.25
Reusing Highly Optimized IR in Dynamic Compilation

Authors: Andrej Pečimúth, David Leopoldseder, and Petr Tůma

Published in: LIPIcs, Volume 333, 39th European Conference on Object-Oriented Programming (ECOOP 2025)

Abstract
Virtual machines (VMs) with dynamic compilers typically specialize compiled code to the state of the running VM instance and thus cannot reuse the code between multiple runs of the same application. The JIT compiler must recompile the same methods for each run of the application separately, which can prolong the application’s warmup time. We propose a technique to reduce compilation time by reusing a highly optimized intermediate representation (IR). We achieve this by tracing compiler-interface calls during compilation. The validity of the specializations in the IR is verified during a replay stage, and the replay also facilitates the relocation of runtime object references. The IR is stored on a compilation server, which can compile it to machine code and provide the code to local or remote VM instances. We implemented a compilation server with IR caching for GraalVM, a high-performance production-grade Java Virtual Machine (JVM). We present an evaluation based on four industry-standard benchmark suites. In each suite, our approach reduces compilation time by 23.6% to 36.8% and warmup time by 13.1% to 21.2% on average while preserving peak application performance.
Cite as

Andrej Pečimúth, David Leopoldseder, and Petr Tůma. Reusing Highly Optimized IR in Dynamic Compilation. In 39th European Conference on Object-Oriented Programming (ECOOP 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 333, pp. 25:1-25:25, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{pecimuth_et_al:LIPIcs.ECOOP.2025.25,
  author =	{Pe\v{c}im\'{u}th, Andrej and Leopoldseder, David and T\r{u}ma, Petr},
  title =	{{Reusing Highly Optimized IR in Dynamic Compilation}},
  booktitle =	{39th European Conference on Object-Oriented Programming (ECOOP 2025)},
  pages =	{25:1--25:25},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-373-7},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{333},
  editor =	{Aldrich, Jonathan and Silva, Alexandra},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2025.25},
  URN =		{urn:nbn:de:0030-drops-233176},
  doi =		{10.4230/LIPIcs.ECOOP.2025.25},
  annote =	{Keywords: code reuse, compilation time, warmup, remote compilation, dynamic compilation, virtual machines}
}
Document
DOI: 10.4230/LIPIcs.OPODIS.2024.22
FaaSLoad: Fine-Grained Performance and Resource Measurement for Function-As-a-Service

Authors: Mathieu Bacou

Published in: LIPIcs, Volume 324, 28th International Conference on Principles of Distributed Systems (OPODIS 2024)

Abstract
Cloud computing relies on a deep stack of system layers: virtual machine, operating system, distributed middleware and language runtime. However, those numerous, distributed, virtual layers prevent any low-level understanding of the properties of FaaS applications, considered as programs running on real hardware. As a result, most research analyses only consider coarse-grained properties such as global performance of an application, and existing datasets include only sparse data. FaaSLoad is a tool to gather fine-grained data about performance and resource usage of the programs that run on Function-as-a-Service cloud platforms. It considers individual instances of functions to collect hardware and operating-system performance information, by monitoring them while injecting a workload. FaaSLoad helps building a dataset of function executions to train machine learning models, studying at fine grain the behavior of function runtimes, and replaying real workload traces for in situ observations. This research software project aims at being useful to cloud system researchers with features such as guaranteeing reproducibility and correctness, and keeping up with realistic FaaS workloads. Our evaluations show that FaaSLoad helps us understanding the properties of FaaS applications, and studying the latter under real conditions.
Cite as

Mathieu Bacou. FaaSLoad: Fine-Grained Performance and Resource Measurement for Function-As-a-Service. In 28th International Conference on Principles of Distributed Systems (OPODIS 2024). Leibniz International Proceedings in Informatics (LIPIcs), Volume 324, pp. 22:1-22:21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)

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@InProceedings{bacou:LIPIcs.OPODIS.2024.22,
  author =	{Bacou, Mathieu},
  title =	{{FaaSLoad: Fine-Grained Performance and Resource Measurement for Function-As-a-Service}},
  booktitle =	{28th International Conference on Principles of Distributed Systems (OPODIS 2024)},
  pages =	{22:1--22:21},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-360-7},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{324},
  editor =	{Bonomi, Silvia and Galletta, Letterio and Rivi\`{e}re, Etienne and Schiavoni, Valerio},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2024.22},
  URN =		{urn:nbn:de:0030-drops-225581},
  doi =		{10.4230/LIPIcs.OPODIS.2024.22},
  annote =	{Keywords: cloud, serverless, Function-as-a-Service, measurement, performance, resource utilization, dataset generation, workload injection}
}
Document
Experience Paper
DOI: 10.4230/LIPIcs.ECOOP.2023.38
Building Code Transpilers for Domain-Specific Languages Using Program Synthesis (Experience Paper)

Authors: Sahil Bhatia, Sumer Kohli, Sanjit A. Seshia, and Alvin Cheung

Published in: LIPIcs, Volume 263, 37th European Conference on Object-Oriented Programming (ECOOP 2023)

Abstract
Domain-specific languages (DSLs) are prevalent across many application domains. Such languages let developers easily express computations using high-level abstractions that result in performant implementations. To leverage DSLs, however, application developers need to master the DSL’s syntax and manually rewrite existing code. Compilers can aid in this effort, but part of building a compiler requires transpiling code from the source code to the target DSL. Such transpilation is typically done via pattern-matching rules on the source code. Sadly, developing such rules is often a painstaking and error-prone process. In this paper, we describe our experience in using program synthesis to build code transpilers. To do so, we developed MetaLift, a new framework for building transpilers that transform general-purpose code into DSLs using program synthesis. To use MetaLift, transpiler developers first define the target DSL’s semantics using MetaLift’s specification language, and specify the search space for each input code fragment to be transpiled using MetaLift’s API. MetaLift then leverages program synthesizers and theorem provers to automatically find transpilations expressed in the target DSL that is provably semantic equivalent to the input code. We have used MetaLift to build three DSL transpilers targeting different programming models and application domains. Our results show that the MetaLift-based compilers can translate many benchmarks used in prior work created by specialized implementations, but can be built using orders-of-magnitude fewer lines of code as compared to prior work.
Cite as

Sahil Bhatia, Sumer Kohli, Sanjit A. Seshia, and Alvin Cheung. Building Code Transpilers for Domain-Specific Languages Using Program Synthesis (Experience Paper). In 37th European Conference on Object-Oriented Programming (ECOOP 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 263, pp. 38:1-38:30, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{bhatia_et_al:LIPIcs.ECOOP.2023.38,
  author =	{Bhatia, Sahil and Kohli, Sumer and Seshia, Sanjit A. and Cheung, Alvin},
  title =	{{Building Code Transpilers for Domain-Specific Languages Using Program Synthesis}},
  booktitle =	{37th European Conference on Object-Oriented Programming (ECOOP 2023)},
  pages =	{38:1--38:30},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-281-5},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{263},
  editor =	{Ali, Karim and Salvaneschi, Guido},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2023.38},
  URN =		{urn:nbn:de:0030-drops-182316},
  doi =		{10.4230/LIPIcs.ECOOP.2023.38},
  annote =	{Keywords: Program Synthesis, Code Transpilation, DSLs, Verification}
}
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