gem5

来源： https://stackoverflow.com/questions/62757008/how-to-use-m5-in-gem5-20

问题 I want to use the PyCharm IDE for developing code in a gem5 project. With import sys sys.path.append('/home/<username>/gem5/src/python/') import m5 from m5.objects import * system = System() i tried to import the m5 libraries of gem5 to allow linting within the project. m5 and everything related to it are not found by PyCharm No Module named m5 How can i import this to make full use of the linter? 来源： https://stackoverflow.com/questions/61619113/add-custom-modules-to-pycharm-linter

问题 I'm new to gem5. New even to computer architecture. I am trying to build the gem5.opt using scons build/X86/gem5.opt I get an import error for module six: ➜ gem5 scons build/RISCV/gem5.opt scons: Reading SConscript files ... ImportError: No module named six.py: File "/home/hari/gem5/SConstruct", line 102: from m5.util import compareVersions, readCommand File "/home/hari/gem5/src/python/m5/util/__init__.py", line 54: from .smartdict import SmartDict File "/home/hari/gem5/src/python/m5/util

问题 Due to: extensive usage of code auto-generation (notably for the .isa instruction and decoder sublanguage) scons symlinking sources into the build tree, and in particular symlinking src/arch/ARCH to src/ARCH it becomes very hard to setup Eclipse to work well with gem5. Has anyone managed to achieve a good setup? Especially interested in Linux hosts. 回答1: I have achieved a very good setup with the following horrendous hack: define the Eclipse project inside the build/ARM directory itself! This

问题 In order to develop complex gem5 python configuration scripts with more convenient IDE the gem5 lib has to be added to the project. However, for those who are not experts in python and Pycharm (Such as myself) there are some difficulties. For those who are unfamiliar with gem5, this is a short explanation: gem5 is an open source simulator that inspects hardware architecture. It can be downloaded from github: link to github. The installation process is described at the following link. <gem5

问题 If you modify a file under src/python , then a rebuild is necessary, unlike modifications to configs/ That makes making changes under that directory very painful, since even the clean rebuild takes several seconds. Is there a way to avoid the rebuild? 回答1: M5_OVERRIDE_PY_SOURCE=true If you export that environment variable for the run, and gem5 uses the Python source code directly. This likely exists because by default, gem5 packs up Python object files inside the gem5.opt binary so allows

问题 While looking for ways to speed up my simulation, I came across the --force-lto option. I've heard about LTO (Link Time Optimization) before, so that made me wonder why isn't --force-lto the default while building gem5? Would that make a simulation go much faster than a gem5.fast build compared to a gem5.opt build? 回答1: In gem5 fe15312aae8007967812350f8cdac9ad766dcff7 (2019), the gem5.fast build already enables LTO by default, so you generally never want to use that option explicitly, but

问题 I need memory to be setup in a given way immediately when simulation starts before any instructions are executed. I understand that this is essentially what the ELF loader does to load the main executable, but trying to pass fs.py --kernel multiple times appears to have no effect. I could try to hack that data into my mail ELF executable with the linker script, but it would be much more convenient if I could avoid this and just provide either raw bytes on the CLI, or give a raw binary file to

问题 Gem5 has several tests in the source tree, and there is some documentation at: http://www.gem5.org/Regression_Tests but those docs are not very clear. What tests are there and how to run them? 回答1: Unit vs regression tests gem5 has two kinds of tests: regression: run some workload (full system or syscall emulation) on the entire simulator unit: test only a tiny part of the simulator, without running the entire simulator binary We will cover both on this answer. Regression tests 2019

问题 This may be a silly question, but i'm learning about gem5 recently and i'm being able to simulate my C programs using this software, in syscall emulation and in full system simulation. However, whenever I try to simulate any Java program into it, I get this error(syscall emulation): gem5 Simulator System. http://gem5.org gem5 is copyrighted software; use the --copyright option for details. gem5 compiled Aug 26 2019 12:58:15 gem5 started Sep 5 2019 14:56:02 gem5 executing on (...), pid 6115