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- Version 6.1
- * Support for newer Pin versions, up to Pin 2.14-71313 / PinPlay 2.1
- * Support GCC 4.9
- * Integrate the Cheetah cache models
- * Remove legacy Graphite core models simple, magic and iocoom
- * A new dumpstats.py option (-c|--config) prints configuration parameters one-per-line
- * Numerous bug fixes and improvements
- Version 6.0
- * Add Instruction Window-Centric core model (internal name: ROB core model, use rob.cfg)
- * Add SMT support (IWC/ROB core model only, use smt*.cfg)
- * Add SniperLite, a fast cache-only model (use nehalem-lite.cfg)
- * Add DRAM cache prefetcher
- * Add support for non-standard SQLite paths through the SQLITE_PATH environment variable
- * Add sniperdiff.py for easy diff-ing of Sniper results and configurations
- * Branch predictor accuracy improvements
- * New roi-icount script to more easily specify fast-forward/warmup/detailed lengths by instruction count
- * Faster mode for running single-program / single-threaded PinBall (--pinball-non-sift)
- * Support for newer Pin versions, up to Pin 2.13.65163 / PinPlay 1.3
- * Numerous bug fixes and improvements
- Version 5.3
- * Fast, cache-only one-IPC timing model (-c cacheonly)
- * Add energystats script to provide runtime energy counters
- * Add Python-based thread scheduler infrastructure and example
- * Add support for Query-Based Selection (Jaleel, MICRO 2010)
- * Add support for plotting Bottle graphs (Du Bois, OOPSLA 2013)
- * Memory tracker infrastructure to measure cache hit rates by allocation site
- * Support for McPAT 1.0
- * Various bug fixes and improvements
- Version 5.2
- * Configurable coherency protocol (MSI/MESI/MESIF), made MESI the default
- * Add more cache statistics: LRU stack distance historgram, LLC miss latency breakdown
- * Implement auxiliary tag directories (ATD) to track constructive/destructive interference in shared caches
- * Implement 2-level TLB hierarchy with Nehalem configuration
- * New hooks HOOK_APPLICATION_ROI_{BEGIN,END}, called even when ROI markers are not used directly; these hooks can be used to trigger ROI from a script
- * Improved stop-by-icount script to support ROI-relative warmup and detailed lengths
- * Ondemand routine stack printer: configure routine_tracer/type=ondemand, then send a SIGUSR1 to Sniper to get a per-thread application backtrace
- * Emulate leaf 11 of the cpuid instruction to pass topology information to runtimes (used by Intel OpenMP)
- * Emulation of sched_* system calls, gettimeofday replacement, cpuid in SIFT mode
- * Improve handling of LD_LIBRARY_PATH: use SNIPER_SIM_LD_LIBRARY_PATH for the simulator, SNIPER_APP_LD_LIBRARY_PATH for the application
- * Re-implemented BigSmall scheduler to use thread affinity calls rather than the low-level (and error prone) moveThread API
- * sim.thread Python interface to interact with threads (get num threads, get appid, get/set affinity)
- * Use newest Pin version 2.13.61206
- * Numerous bug fixes and improvements
- Version 5.1
- * New Suggestions for Optimization visualization (--viz-aso)
- * KCacheGrind-compatible output for profiling simulated applications (--profile)
- * Roaming (equal-time) scheduler allowing for thread migrations (scheduler/type=roaming)
- * Support for newest Pin version 2.12.58423
- * Various bugfixes and improvements
- Version 5.0
- * Periodic sampling infrastructure
- * Extensible per-thread statistics infrastructure
- * Routine tracing infrastructure and per-function statistics
- * NUCA cache model
- * Distributed tag directories
- * sim.mem Python module for reading application memory
- * Various other improvements and bugfixes
- Version 4.2
- * Various accuracy fixes for Nehalem core model
- * Add cache replacement policies: NRU, MRU, NMRU, PLRU, S-RRIP, Random
- * Add statistical DRAM performance model
- * Add syscall enter/exit hooks
- * Add topology view to visualization
- * Speed up McPAT by caching architecture-specific CACTI results
- * Fixes to running multiple multi-threaded workloads
- * Multi-programmed mode: end simulation at first/last program end, optional trace/application restart
- * PinPlay support
- Version 4.1
- * Visualization support (--viz)
- * Minor cleanups and bug fixes
- Version 4.0
- * Thread migration and scheduler support
- * Pinned (round-robin), static, random thread schedulers
- * Heterogeneous configuration files with tags
- * Configurable address2set hash functions for non-power of two sized caches
- * Various prefetcher improvements
- * DRAM cache model
- * One-IPC fast-forward model
- * Fault injection framework
- * New SQLite3-based statistics format
- * ROI support for SIFT
- * Support for MPI applications (shared-memory backend)
- * Limited support for Jikes/DaCapo benchmarks
- * Use newest Pin 2.12.53271
- * Add script for generating topology images
- * Preserve history in Git repository
- * Many cleanups and bugfixes
- Version 3.07
- * Prefetcher improvements, add global history buffer-based prefetcher
- * HOOK_PERIODIC_INS: Instruction-based periodic callback
- * Implement CLONE_CHILD_CLEARTID syscall interface
- * Add example scripts for periodic statistics, periodic McPAT, simulating limited iteration counts
- * Support for Pin 2.12
- * Fixes to Python environment
- * Various bugfixes
- Version 3.06
- * Fix modeled size of network messages
- * Build fixes for 32-bit, compiler overrides
- Version 3.05
- * Scheduler: expose application ID
- * Add example script roi-iter.py to dynamically select ROI based on SimMarkers
- * CPI stacks: --aggregate and --partial support, fixes for heterogeneous configurations
- * Traces: support for 32-bit executables
- * Build fixes for older Linux versions
- Version 3.04
- * Support for running multiple multi-threaded workloads in a single simulation
- * McPAT fixes for heterogeneous configurations
- * Build system fixes for newer Linux versions
- Version 3.03
- * Bugfixes in configuration parser, starting of multi-program workloads
- Version 3.02
- * Fixes for specifying heterogeneous configurations
- * L2 prefetcher improvements
- * Perfect cache modeling
- * Self-modifying code support
- * PyControl scripting interface
- * GCC 4.7 support
- * McPAT integration for area, power and energy predictions
- Version 3.01
- * Add heterogeneous cache configuration support
- * Emulate pause, sleep system calls
- * Improve support for 32-bit applications
- * Pin 2.11 support
- Version 3.0
- * Support for heterogeneous core types
- * Separate core microarchitectural characteristics into CoreModel class
- * Improve CPI stack detail
- * Add initial implementation for basic L2 prefetcher
- * Optionally access DRAM directly in configurations with a single LLC
- * Deprecate replacement of pthread_* synchronization calls
- * Support more SYS_futex options
- * Remove unused code for Graphite FULL mode
- * Fixes to the build system, including parallel builds (make -j)
- * Support for building on 32-bit hosts
- * Remove configuration defaults from code, require everything to be specified in a configuration file
- Version 2.04
- * Fix trace playback for non-predicated instructions
- Version 2.03
- * Fix record-trace -d 0
- * Fix keyboard interrupt behavior
- Version 2.02
- * [sift_recorder] Add support for -f (number of instructions to fast-forward) and -d (number of instructions to trace in detail) command-line options
- Version 2.01
- * Compilation fixes for GCC 4.6
- Version 2.0
- * Multi-program mode
- * Instruction trace collection tool
- * New ROI-aware sim.out file generation
- * CPI components for various SYS_futex system calls
- * Improve accuracy of the core interval model
- * GCC 4.6 support
- Version 1.06
- * Fix queue overflow when many TLB misses occur in a single basic block
- Version 1.05
- * [cpistack] Add --abstime command-line parameter to scale Y axis according to absolute time in seconds
- * [interval] Fix branch resolution latency calculation
- Version 1.04
- * Fix instruction dependencies for LEA and stores
- * Support synchronous signal handling (when using the
- -g --general/enable_signals=true command-line parameter)
- Version 1.03
- * Build changes to improve compatibility with Fedora 16
- Version 1.02
- * Remove unneeded warnings from CPI stack script
- Version 1.0
- * Initial public release
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