Sycl-mlir Compiler Internship

1 week ago

Edinburgh, United Kingdom Codeplay Full time

SYCL is a C++-based heterogeneous programming standard for accelerator computing. Codeplay works on implementations of this standard and are investigating using the MLIR compiler framework to enable SYCL-aware optimizations at compile time. This includes allowing the creation of SYCL language extensions so that the programmer can provide more accurate descriptions of their program to enable compiler optimizations. The advantage of MLIR for the implementation of such extensions is that compiler information for both the "host" code, that runs on the CPU, and the "device" code, that runs on the accelerator, can be considered together more easily allowing for optimizations that would not be possible based on knowledge of either side of the program alone. The matrix extension allows user to target tensor hardware (AMX, XMX, tensor core etc.) with SYCL in a portable manner. However, plain DPC++ cannot optimize such code as it is too low level for LLVM to efficiently capture the semantic. The goal of this internship is to develop a support for the matrix extension into our MLIR compiler and explore efficient optimizations and lowering. **Responsibilities**: During this internship, you will be working with a small team of compiler developers investigating options for the future design of SYCL compilers and you will: - Learn about Clang, LLVM, MLIR. - Learn about heterogeneous programming and language design, particularly for SYCL. - Learn about hardware extensions of modern GPUs (AMX, Tensorcores). - Develop a representation for the matrix extension in MLIR with the help of the compiler team and libraries developers (users of the extension). - Develop MLIR passes and lowering with the help of the team to target SPIR-V. - If time allows - Study and develop optimizations for the matrix extension. - Develop support for CUDA. **What We Offer**: - A friendly and relaxed working environment where colleagues respect and support each other. - Great career prospects within a growing company - Newstart mentoring scheme - Flexible working hours - Frequent company social events (social nights, pot luck lunches, gaming, karting, outdoor adventures, and more) **Required Skills**: - C++ development experience. - Some level of compiler experience, e.g. coursework or research project. - Good written English and communication skills. - Working knowledge of source control and configuration management tools. **Beneficial Skills**: Knowledge and/or experience of any of the following would be useful for the role, but are not essential. You must be able to learn new skills, but will be given support from Codeplay's team to get you up to speed. - Knowledge of Clang or LLVM. - Knowledge of MLIR. - Knowledge of parallel IRs such as SPIR-V or PTX.Knowledge of heterogeneous programming, e.g. CUDA, SYCL, OpenCL, etc. - Knowledge of parallel architectures, such as GPUs. - Knowledge of build systems (e.g. CMake) and compiler tool-chains. - Experience working in a team. - Solid compiler design experience (SSA, CFG etc.) **Application Guidance**:

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