问题
I have to work with gem5 for my project but was wondering that what hardware configuration i should buy. I owned a "good enough" laptop but sadly it's no longer working reliably, so i would have to stick to some lower end laptop. What minimum priced processor i should buy? Also AMD or Intel? Can't afford an apple laptop either. Any help is deeply appreciated
回答1:
To give you an idea, I have high end Lenovo P51 laptop with:
- Intel Core i7-7820HQ Processor (8MB Cache, up to 3.90GHz) (4 cores 8 threads)
- 32GB(16+16) DDR4 2400MHz SODIMM
- 512GB SSD PCIe TLC OPAL2
- Ubuntu 17.10
Then the build time for:
git checkout da79d6c6cde0fbe5473ce868c9be4771160a003b
CC=gcc-6 CXX=g++-6 scons -j"$(nproc)" --ignore-style build/ARM/gem5.opt
is 10 minutes which I consider reasonable.
And a minimalistic ARM Buildroot Linux kernel boot takes:
- 1 minute 40 seconds on the default simplified
AtomicSimpleCPU - 10 minutes on the much more realistic
--cpu-type=HPI --caches
This laptop is likely more expensive than most Apple laptops however at 2500 dollars. But you are going to be developing professionally, it is a worthy investment.
For hobbyist use however, a midend 1200 dollar laptop should be good enough to get started I believe, considering that:
you won't build from scratch very often, mostly incrementally with
sconsyou can boot with a simple and fast CPU, make a checkpoint with
m5 checkpointbefore your benchmark, then restore the checkpoint with a more realistic and slower CPU model: How to switch CPU models in gem5 after restoring a checkpoint and then observe the difference?
来源：https://stackoverflow.com/questions/47997565/gem5-system-requirements-for-decent-performance