38dc6152c6
Notable User Facing Changes --------------------------- - support for LLVM 13 - CMake: Inter-Procedural Optimization is enabled on code of runtime library (libpocl.so is compiled with -flto on systems that support it). - LTTng tracing improved - more command types are traced, and also some synchronous API calls (like clCreateBuffer) are traced. - poclcc, tests and examples can be disabled with CMake options - Valgrind support improved by making Valgrind aware of pocl's reference counting of cl_* objects - kernels which are called by kernels are now force-inlined - Support for NetBSD. - Support for Unix systems without libdl. - PoCL can now (optionally) respond to SIGUSR2 by printing some live debug information. - improved SPIR support for CUDA devices Notable Bug Fixes ----------------- - Fixed a potential crash on Unix systems without sysfs mounted. - Fixed compilation errors when building on macOS. - Fixed POCL_FAST_INIT macro; POCL_INIT_LOCK must be invoked with only one argument. - Fix bin/poclcc to not depend on OpenCL 2.0 symbols - Fixed miscompilation in kernel loops with multiple conditionals with barriers in them. Other ----- - Add cmake options PARALLEL_COMPILE_JOBS, PARALLEL_LINK_JOBS to use ninja's seperate compile and link job pools. - Improve memory architecture, buffer migration and allocation. Buffers are now allocated on a device when first used (previously each buffer was allocated on every device in context). - the single global LLVMContext was replaced with multiple LLVMContexts, one per OpenCL cl_context. OpenCL code can now be compiled in parallel when using separate cl_contexts. This feature is disabled by default since it significantly slowed down PyOpenCL. This should be resolved by separating LLVM compilation in their own threads in the future. - a new OpenCL extension was added to PoCL: cl_pocl_content_size. The extension allows the user to give optimization hint to PoCL, which will be used internally by PoCL to optimize buffer transfers between multiple devices. |
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