v2024.2

Added

• Support arbitary Buffer Location for accessor (#343).
• Informally support atomic fence capability device query (#345).

Changed

• Use c++ constructs to replace malloc calls in acl_kernel_if (#325).
• Various Runtime code clean up (#334, #335).
• Update Thread Sanitizer to use Ubuntu 22.04 (#339).
• Prerequisite changes for getting rid of simulation environment variable (#341).

Fixed

• Correct CSR pipe behaviour when StallFree is used (#340).

v2024.1

Added

• Add support for hostpipe sideband signals (#323).

Changed

• Update clGetDeviceInfo to follow OpenCL 1.2 spec (#317).
• Update invocation image debug prints (#318).
• Delay erasing context from contexts_set during acl_idle_update (#322).
• Only write changing parts of kernel arguments to kernel CRA (#324).
• Pass information on whether a streaming kernel has CRA arguments to MMD (#330).

Removed

• Remove simulator device from offline devices (#319).

Fixed

• Resolves hang when the device op queue gets full and no more commands can be submitted (568569a).
• Fix CSR pipe write handshaking (#326).

v2024.0

Added

• Device global dedicated interface Runtime changes (#295).
• Introduce ACL_CONTEXT_CALLBACK_DEBUG env variable to log acl_context_callback function (#300).
• Added Fuzz Testing in the repo (#298).
• Support AVALON_MM CSR hostpipe (#304).

Changed

• Relax hostpipe assertion to allow non-byte aligned data type to pass (#306).
• Clean up runtime code for simulation preprogram autodiscovery string load (#308).

Fixed

• Coverity fixes for pkg_editor_test.cpp (#291).
• Fix TAINTED_SCALAR Coverity issues for pkg_editor.c (#277).
• Created a workaround for host pipe atomic hang issue (#301).

Security

• Coverity fixes for acl_hal_mmd.cpp that cloes opened mmd lib properly. (#290).

v2023.2

Added

• Add accel_id parameter to simulation_streaming_kernel_start() function (#282).
• Support program scope hostpipe and CSR pipe (#284, #288, #289).

Changed

• Parse device global address in base 16 (#249).
• Declare dlopen() wrappers as static functions in acl_hal_mmd (#280).
• Auto discovery change for Device Global (#278).
• Modify USM device allocation information returned by clGetDeviceInfo (#286).

Removed

• Remove CL_CONTEXT_COMPILER_MODE_SIMULATION_INTELFPGA mode (#244).
• Remove ACL_CONTEXT_MSIM mode (#258).
• Remove trylock + unlock in acl_reset_condvar() (#279).

Fixed

• Add copy constructor & assignment operator to acl_device_binary_t (#236).
• Remove dead code in acl_program.cpp (#237).
• Fix size_t printf statement to %zu in acl_offline_hal.cpp (#238).
• Fix Unused value in acl_auto_configure.cpp (#222).
• Fix Unchecked return value in acl_globals.cpp (#231).
• Fix dead link to implementation reference in acl_threadsupport (#242).
• Remove code making lock acquisition order inconsistent in acl_threadsupport.c (#243).
• Fix various coverity issue in acl_program, pkg_editor.c, acl_event_test.cpp, acl_device_op_test.cpp, acl_device_test.cpp, acl_context_test.cpp, acl_event_test.cpp (#228, #247, #254, #255, #256).
• Fix Reliance on integer endianness in acl_kernel_if.cpp (#226).
• Prevent zlib from being dynamically loaded in pkg_editor.c (#248, #251).
• Fix Deadcode issue in acl_context_test.cpp (#253).
• Fix various coverity issue in test files (#259, #260, #261, #262, #263, #265, #267, #271, #272, #273 #274, #275).
• Fix kernel id - csr address mapping issue in simulation runtime (#285).

Security

• Fix Resource Leak issue in acl_hal_mmd.cpp (#229).
• Fix Dereference before null check in acl_hostch.cpp (#233).
• Fix function pointer conversion issue in acl_support.cpp (#239).

v2023.1

Added

• Enable new CSR protocol from the compiler with separated start registers (#167, #200).
• Perform a memory copy for simulation buffer with buffer location (#214).
• Implement runtime support for device global with init_mode reprogram (#161).
• Enabled ACL_SUPPORT_DOUBLE to support cl_khr_fp64 (#230).

Changed

• Refactor runtime multi-threading/synchronization support (#152).
• Skip CSR version check when cra_ring_root doesn't exist (#195).

Fixed

• Fix integer conversion warning in acl_hash.cpp, acl_hash_test.cpp and acl_threadsupport.cpp (#199, #201).
• Fix warnings in unit test BSP (#204).
• Fix coverity issue, AUTO_CAUSES_COPY, in acl_usm.cpp and acl_context.cpp (#218, #223).
• Fix wrong printf formatter and uninitialized scalar variable issue in acl_kernel.cpp and acl_pll.cpp (#221, #224).
• Fix NEGATIVE_RETURNS Coverity issue in acl_device.cpp (#225).
• Fix printf formatter issue in acl_kernel_if.cpp (#220).
• Cache context offline device setting specified by environment variables (#235)

Security

• Resolve multiple memory leaks and stack buffer overflow in the pkg_editor library and pkg_editor_test (#190, #191).
• Fix undefined behaviour in acl_profiler_test (#196, #197).
• Enable address sanitizer to catch memory safety issues (#118).
• Check for null pointer before dereference in acl_svm.cpp, acl_kernel.cpp and acl_profiler.cpp (#202, #203, #206).
• Unconditionally null-terminate output of strncpy() in pkg_editor (#215)
• Fix various Coverity issues (memory leaks, wrong conditional statetment, dereference after null check ) in acl_mem.cpp and acl_mem_test.cpp (#219).

v2023.0

Fixed

• Print kernel hang status only in debug mode (#157).
• Correct kernel IO debug messages (#165).

Security

• Resolve multiple memory leaks and stack buffer overflow (#154).

v2022.3

Added

• Support CL_MEM_ALLOC_BUFFER_LOCATION_INTEL property (#34, #46, #88).
• Support early print buffer flushing in debug mode (#61).
• Document how buffers are managed in the runtime (#81).
• Add cl_intel_unified_shared_memory to supported extensions (#94).
• Parse device_global memory definitions from auto-discovery string (#100, #110).
• Enable macro MEM_DEBUG_MSG in debug mode (#106).
• Print warning when kernel argument has multiple buffer_location attributes (#109).
• Support streaming kernels (#103, #108, #114, #115, #142, #145, #146, #153, #158).
• Document purpose of FPGA Runtime for OpenCL (#102).
• Support Ubuntu 22.04 LTS (#112, #113, #182).
• Document phase-locked-loop settings (#131).
• Support buffer_location for shared/host USM allocations (#141, #149).
• Read environment variable INTELFPGA_SIM_DEVICE_SPEC_DIR (#156).
• Document issue where multiple runtime libraries get linked (#166).

Changed

• Update Khronos OpenCL headers (#62, #67, #68).
• Support Rocky Linux 8 since CentOS 8 was discontinued (#72, #73).
• Require C++17 compiler support (#75).

Fixed

• Load libz.so.1 alongside libz.so on Linux (#69).
• USM device allocations when simulating multiple global memories (#104).
• Consistently enable verbose output for all tests (#121).
• Inaccessible links to MMD functions in documentation (#128).

Security

• Compile with hardening flags (#48).
• Add CMake flag ACL_TSAN to build with thread sanitizer (#63, #76).
• Fix data races detected by thread sanitizer (#74, #89).
• Fix compiler warnings (#77, #83, #84, #86, #87).
• Update zlib to 1.2.13 on Windows (#169).

v2022.2

Added

• Document running unit tests individually (#35).
• Document internal use of pre-C++11 standard library ABI (#31, #39).
• Document recommended settings for forked repository (#44).
• Implement OpenCL Core 3.0 clCreateBufferWithProperties (#53).
• Document running clang-format (#60).
• Document git identity setup (#70).

Changed

• Support Rocky Linux 8 instead of CentOS 8 (#72, #73).

Fixed

• Simulation of systems with multiple global memories (#29).
• Explicitly require C++11 compiler support (#47).
• Link failure with -Wl,--no-undefined (#49).

Security

• Check for null pointer before dereference (#42, #43).
• Update Windows installation script for zlib to 1.2.12 (#96).

v2022.1

• Initial public release.