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Global instructions are new in Vega and are essentially FLAT instructions from GCN3 but guaranteed to go to global memory where as flat can go to global or local memory. This reworks the flat instruction classes so that the initiateAcc / execute / completeAcc logic can be reused for flat, global, and later scratch subtypes of flat instructions. The decoder creates a flat instruction class which sets instruction flags based on the flat instruction's SEG field. There are new initOperandInfo and generateDissasmbly methods for flat and global. The number of operands and operand index getters are modified to check the flags and return the correct value for the subtype. Change-Id: I1db4a3742aeec62424189e54c38c59d6b1a8d3c1 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47106 Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com> Reviewed-by: Kyle Roarty <kyleroarty1716@gmail.com> Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
This is the gem5 simulator. The main website can be found at http://www.gem5.org A good starting point is http://www.gem5.org/about, and for more information about building the simulator and getting started please see http://www.gem5.org/documentation and http://www.gem5.org/documentation/learning_gem5/introduction. To build gem5, you will need the following software: g++ or clang, Python (gem5 links in the Python interpreter), SCons, zlib, m4, and lastly protobuf if you want trace capture and playback support. Please see http://www.gem5.org/documentation/general_docs/building for more details concerning the minimum versions of these tools. Once you have all dependencies resolved, type 'scons build/<CONFIG>/gem5.opt' where CONFIG is one of the options in build_opts like ARM, NULL, MIPS, POWER, SPARC, X86, Garnet_standalone, etc. This will build an optimized version of the gem5 binary (gem5.opt) with the the specified configuration. See http://www.gem5.org/documentation/general_docs/building for more details and options. The main source tree includes these subdirectories: - build_opts: pre-made default configurations for gem5 - build_tools: tools used internally by gem5's build process. - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - include: include files for use in other programs - site_scons: modular components of the build system - src: source code of the gem5 simulator - system: source for some optional system software for simulated systems - tests: regression tests - util: useful utility programs and files To run full-system simulations, you may need compiled system firmware, kernel binaries and one or more disk images, depending on gem5's configuration and what type of workload you're trying to run. Many of those resources can be downloaded from http://resources.gem5.org, and/or from the git repository here: https://gem5.googlesource.com/public/gem5-resources/ If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.