------------------------------------------------------------------------------ HISTORY RISC V 0.6.3 ------------------------------------------------------------------------------ Releases, Publications, important changes: ------------------------------------------ 2014-06-09: Alpha release 0.1.0 (unreliable work-in-progress) Basic parsing and representing of SystemC core elements Rainer Doemer, Guantao Liu, Tim Schmidt 2014-11-24: Alpha release 0.1.1 (aka Hulk) Static read/write analysis of variables in processes Rainer Doemer, Guantao Liu, Tim Schmidt 2015-09-30: Alpha release 0.2.0 (open source) Integrated compiler and simulator -> approx. 61k lines of source code Rainer Doemer, Guantao Liu, Tim Schmidt 2015-10-30: Alpha release 0.2.1 (open source) Integrated compiler and simulator + improved documentation (manual page) + improved installation (bin directory, etc.) + bug fixes (conflict tables) -> approx. 62k lines of source code Rainer Doemer, Guantao Liu, Tim Schmidt 2016-08-12: Alpha release 0.2.2 (internal only) Integrated compiler and simulator + improved installation (and maintenance) scripts + initial support for dynamic instance tree + bug fixes -> approx. 79k lines of source code Rainer Doemer, Guantao Liu, Tim Schmidt 2016-09-30: Beta release 0.3.0 (open source) Integrated compiler and simulator, new dynamic elaborator + improved installation, build, and maintenance setup + new support for dynamic conflict analysis: RISC elaborator 'elab' + new support for annotation of library functions (#pragma risc) + new support for the Intel compiler in the backend + new demo example mandelbrot_fifo.cpp (using SystemC sc_fifo) + new parallel benchmarks fibo.cpp, fmul.cpp (extreme parallelism) + safe support for primitive channels with update methods + bug fixes -> approx. 80k lines of source code Rainer Doemer, Guantao Liu, Tim Schmidt 2017-05-05: Beta release 0.3.1 (internal only) Integrated compiler and simulator, with dynamic elaborator + improved installation script (with minimal BOOST library) + out-of-order execution with prediction + new regression test suite for simulation (SEQ, SYN, NPD, OOO) + bug fixes -> approx. 102k lines of source code Zhongqi Cheng, Rainer Doemer, Guantao Liu, Tim Schmidt 2017-07-31: Release 0.4.0 (open source) Integrated compiler and simulator, with SIMD vectorization + new support for SIMD parallelism: RISC SIMD advisor 'simd' + new SIMD vectorization demo mandelbrot_icpc_demo (using Intel compiler) + more precise port mapping analysis leading to less false conflicts + more precise prediction analysis due to cloning of channel segments + improved segment ID instrumentation via thread-local data + performance testing for regression, parallel, and demo examples + improved documentation, logging information, and error handling + bug fixes -> approx. 111k lines of source code Zhongqi Cheng, Rainer Doemer, Guantao Liu, Tim Schmidt 2018-04-19: Release 0.4.1 (internal only) Integrated compiler and simulator with supporting tools + new port-call-path based analysis (DATE'18 paper), less false conflicts + new analysis for reference variables, less false conflicts + new light-weight SystemC headers for faster compilation (CECS-TR-16-07) + new hierarchy visualization tools 'visual' and 'tree' (CECS-TR-17-06) + support for 6 styles of port binding (removes limitation 3 of v.0.4.0) + support for SystemC tracing (sc_trace) facilities + bug fix: unused modules can be present in design models + bug fixes -> approx. 147k lines of source code Farah Arabi, Zhongqi Cheng, Rainer Doemer, Guantao Liu, Daniel Mendoza, Tim Schmidt 2018-06-15: Release 0.4.2 (open-source) Integrated compiler and simulator with supporting tools + foundation libs upgraded to Boost 1.61 and Rose 0.9.10.25 (2018-05-16) + support for CentOS 7.x (in addition to ongoing CentOS 6 support) + new binary distribution in Docker container for quick plug-and-play + initial support for multiple translation units (Partial Segment Graphs) + bug fix: removed obsolete "patching ROSE limitations" step (new Rose) + bug fix: DVD player example code is now C++11 compliant + bug fix: verbosity logs of RISC compiler (with -v and -vv) + bug fixes -> approx. 151k lines of source code Zhongqi Cheng, Rainer Doemer, Daniel Mendoza, Tim Schmidt 2018-09-27 Release 0.4.3 (internal only) Integrated compiler and simulator with supporting tools + support for Partial Segment Graphs (removes limitation 3 of v.0.4.2) + support for multiple translation units, 3rd-party IP without source code + support for static analysis of sc_event_and_list and sc_event_or_list + improved support for RTL constructs (sc_signal, static sensitivity, etc.) + support for simulation in limited time periods (sc_start(duration)) + improved Segment Graph (SG) visualization in .dot files + bug fixes -> approx. 162k lines of source code Zhongqi Cheng, Rainer Doemer, Daniel Mendoza 2018-09-30 Release 0.5.0 (open-source) Integrated compiler and simulator with supporting tools + extended CECS technical report for features, accuracy and completeness -> approx. 162k lines of source code Zhongqi Cheng, Rainer Doemer, Daniel Mendoza 2019-04-15 Release 0.5.1 (internal only) + clean and deterministic segment graphs and data conflict tables + removed instrumentation of redundant mutexes in user-defined channels + internal time resolution consistent with SystemC standard (1ps) + initial support for TLM-2.0 sockets and communication via b_transport() + bug fixes -> approx. 181k lines of source code Zhongqi Cheng, Rainer Doemer, Daniel Mendoza 2019-05-16 Release 0.5.2 (internal only) + improved accuracy of HTML data conflict tables + more flexible port mapping analysis (across hierarchies) + support for TLM-2.0 sockets and communication via b_transport() + support for TLM-2.0 DMI communication via get_direct_mem_ptr() + new DVD player examples modeled with TLM-2.0 coding styles (with/without hierarchical binding, interconnect, multiple memories, DMI) + improved simulator, resuming multiple waiting threads in parallel + improved simulator, replaced event hazards checking with event prediction + new simulator diagnostics log (SYSC_VERBOSITY_FLAGs) + new script min_data_conflict_table.sh for compiler diagnostics + new visualization of socket connectivity and thread location (visual) + bug fixes -> approx. 187k lines of source code Zhongqi Cheng, Rainer Doemer, Daniel Mendoza 2019-06-26 Release 0.5.3 (internal only) + initial support for socket interconnectivity in 'elab' tool + initial support for SC_METHOD, dont_initialize, next_trigger + bug fixes -> approx. 196k lines of source code Zhongqi Cheng, Rainer Doemer, Daniel Mendoza 2019-09-30 Release 0.6.0 (open-source) + integration with virtual platforms (i.e. Simics VP) for co-simulation + new module hierarchy listing tool 'list' + new feature for external conflict table files when these are large + improved support for sc_max_time(), sc_start(duration), sc_stop() + improved support for SC_METHOD (1-to-1 methods-to-invoker ratio) + improved simulator speed in out-of-order scheduler (event delivery) + improved compatibility with modern compilers (i.e. GNU-C 8.x) + improved Doxygen-generated documentation + bug fixes -> approx. 206k lines of source code Zhongqi Cheng, Rainer Doemer, Spencer Kam, Daniel Mendoza 2020-02-27 Release 0.6.1 (internal only) + new feature "scheduler bypass" for improved simulator speed (DATE'20) + new data structure "defining trees" for lazy event prediction (DATE'20) + removed obsolete event notification table (indirect dependencies) + support for SC_METHOD with next_trigger() + support for immediate notifications of events (with warning) + support for timed notifications of events (delivered at a later time) + configurable number of SC_method invoker threads (SYSC_NUM_INVOKERS) + improved and extended regression tests + bug fix for 'visual' tool (broken port connectivity) + bug fixes -> approx. 221k lines of source code Zhongqi Cheng, Rainer Doemer, Daniel Mendoza 2020-09-13 Release 0.6.2 (open-source) + new tool 'sysdot' to interactively visualize segment graphs and conflicts + new support for 'wait(sc_inport.value_changed_event())' (removes ASSERTION WARNING: Neither sc_event, nor sc_event_list!) + bug fixes -> approx. 228k lines of source code Zhongqi Cheng, Rainer Doemer, Aditya Harit 2021-08-18 Release 0.6.3 (open-source) + new tool 'flatten' to create a single file from multi-file SystemC source + new demo examples play_TLM2_membuf with FIFO buffer in shared memory (with interrupt/event or polling synchronization) + bug fixes -> approx. 230k lines of source code Rainer Doemer, Vivek Govindasamy, Yutong Wang August 2021. Future work: + full support for cycle-accurate models (RTL and HLS abstraction) + support for grouping of SC_METHODs for efficient parallel execution ------------------------------------------------------------------------------