Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Conferences, Workshops, Symposiums, and Seminars
  4. Imprecise Store Exceptions
 
conference paper

Imprecise Store Exceptions

Gupta, Siddharth  
•
Li, Yuanlong  
•
Kang, Qingxuan  
Show more
2023
Proceedings of the 50th Annual International Symposium on Computer Architecture (ISCA ’23)
The 50th Annual International Symposium on Computer Architecture (ISCA ’23)

Precise exceptions are a cornerstone of modern computing as they provide the abstraction of sequential instruction execution to programmers while accommodating microarchitectural optimizations. However, increasing compute capabilities in deep memory hierarchies (e.g., software event handlers, programmable accelerators) expose long exception detection latencies that forgo precise exception semantics for retired stores awaiting completion. Unfortunately, well-known post-retirement speculation mechanisms to tolerate these latencies require excessively large microarchitectural structures per core. This paper rethinks the role of architecture and OS in supporting precise exceptions. We show that instead of forcing the architecture to support precise exceptions transparently in all cases, it is preferable to employ hardware-software co-design to handle imprecise store exceptions efficiently. We develop formalism to prove that this approach complies with underlying memory consistency models and design a RISC-V prototype that passes all litmus tests, demonstrating its efficacy.

  • Files
  • Details
  • Metrics
Loading...
Thumbnail Image
Name

imprecise_exceptions.pdf

Type

Postprint

Version

http://purl.org/coar/version/c_ab4af688f83e57aa

Access type

openaccess

License Condition

copyright

Size

699.97 KB

Format

Adobe PDF

Checksum (MD5)

43874fcf02e4f45091c645a59d7b8d6c

Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés