v2026.03.0

Highlights

Deployment

• Link only needed LLVM/Clang libraries
• Avoid static initialization errors when consumer separately links with LLVM by not exporting LLVM symbols from the Proteus runtime library
• Do not install internal implementation API headers by default, add cmake option PROTEUS_INSTALL_IMPL_HEADERS (default off) to optionally enable
• Update spack package recipe

User interface

• Deprecate proteus::init(), proteus::finalize() (no-ops). Proteus automatically handles initialization and finalization within the runtime library

Caching

• Support partially centralize MPI cache with server-client protocol for writing cache entries, distributed reading from networked FS
• Support fully centralized MPI cache with server-client protocol for both reading/writing cache entries

DSL

• Support launching using Dim3
• Support references
• Support defining/declaring multiple variables
• Support functional constructs
• Introduce LLVMCodeBuilder component for backend code generation

CPP

• Support launching using Dim3
• Propagate ExtraArgs for CPP compilation to runtime template instantiation

Bugfixes

• Fix registration for CUDA RDC linked binaries in runtime library

What's Changed

• DSL/CPP: Kernel Launch Using Dim3 by @ZwFink in #380
• PJ-DSL: Reference Semantics by @ZwFink in #368
• Link only needed from LLVM and privatize by @ggeorgakoudis in #384
• Centralized MPI Storage Cache by @ZwFink in #354
• PJ-DSL: Define/Declare Multiple Vars by @ZwFink in #386
• Fix LLVM static initialization with shared proteus by @koparasy in #374
• Use pdebug for matrix ci by @ggeorgakoudis in #390
• [Refactor][NFC] Rename src/lib to src/runtime by @ggeorgakoudis in #396
• Separate headers by @ggeorgakoudis in #397
• Replace lazy ensureInitialized patterns with explicit initialization by @ZwFink in #394
• Show linter output only in step summary by @ggeorgakoudis in #399
• Add install prefix and hostname to CUDA setup script by @ZwFink in #401
• Sanitize initialization and finalization by @ggeorgakoudis in #402
• [NFC] Separate linked libraries in the cmake for the runtime by @ggeorgakoudis in #404
• Completely Centralized MPI Cache by @ZwFink in #400
• Kernel JIT Tracing by @ZwFink in #403
• Make saveToFileAtomic safe for multiple MPI cache writers by @ZwFink in #406
• PJ-DSL: Functional Constructs by @ZwFink in #405
• Ensure instrumentation of all kernel function registrations by @koparasy in #407
• CPPJitModule: Make Instantiate Propagate ExtraArgs by @ZwFink in #412
• Fix registration for CUDA RDC linked binaries by @ggeorgakoudis in #413
• Remove CUDA runtime dep and fix proteus linkage issues by @koparasy in #385
• MPI Caches: Make Comm Thread Sleep Between Probes, Simplify Finalization by @ZwFink in #414
• Update spack installation by @ggeorgakoudis in #417
• Fix gitlab CI on matrix by @ggeorgakoudis in #420
• [Refactor][DSL] Introduce LLVMCodeBuilder by @ggeorgakoudis in #419

Full Changelog: v2026.01.0...v2026.03.0