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Inside VOLT: Designing an Open-Source GPU Compiler

2 days ago
https://arxiv.org/abs/2511.13751
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  • #Open-Source
  • #GPU
  • #Compiler
  • VOLT (Vortex-Optimized Lightweight Toolchain) is an open-source GPU compiler designed to support SIMT execution on emerging open GPU architectures.
  • The compiler framework is technically complex and often underestimated in open hardware development costs.
  • VOLT enables SIMT code generation and optimization across multiple levels of abstraction through a hierarchical design.
  • It centralizes fundamental SIMT-related analyses and optimizations in the middle-end for reusability and adaptability to new GPU variants.
  • Two case studies demonstrate VOLT's support for ISA extensions and host-runtime API extensions.
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