Thanks Daniel - this patch fixes the problem for me.
On 05/06/2020, 11:09, "Daniel Carvalho via gem5-dev" <[email protected]> wrote:
Hello Timothy,
I believe this patch is fixing that:
https://gem5-review.googlesource.com/c/public/gem5/+/29974
Regards,Daniel
Em sexta-feira, 5 de junho de 2020 11:42:44 GMT+2, Timothy Hayes via
gem5-dev <[email protected]> escreveu:
I’ve just rebased onto v20.0.0.1 and am finding that the RubyPrefetcher is
not working with MESI_Three_Level correctly anymore.
There is a segmentation fault when RubyPrefetcher.cc executes
m_controller->enqueuePrefetch
I can’t quite work out why this is happening. Oddly, enqueuePrefetch is a
virtual public function defined in AbstractController.hh. Its implementation is
in the autogenerated L0Cache_Controller.[cc|hh], however, here it is private
and doesn’t use the virtual/override keyword. I thought this might be the
issue, but I see in v19 it is exactly the same and it works fine there.
warn: CheckedInt already exists in allParams. This may be caused by the
Python 2.7 compatibility layer.
warn: Enum already exists in allParams. This may be caused by the Python
2.7 compatibility layer.
warn: ScopedEnum already exists in allParams. This may be caused by the
Python 2.7 compatibility layer.
gem5 Simulator System. http://gem5.org
gem5 is copyrighted software; use the --copyright option for details.
gem5 version 20.0.0.1
gem5 compiled Jun 4 2020 19:18:07
gem5 started Jun 5 2020 10:26:41
gem5 executing on tsx-rdrd, pid 13187
command line: ./gem5/build/ARM_MESI_Three_Level/gem5.opt
./gem5/configs/example/fs.py --ruby --num-cpus=1 --mem-type=SimpleMemory
--mem-size=4GB --cpu-type=TimingSimpleCPU --kernel=vmlinux.vexpress_gem5_v1_64
--machine-type=VExpress_GEM5_V1 --disk-image=disk.img --script=script.sh
--enable-prefetch
warn: You are trying to use Ruby on ARM, which is not working properly yet.
Global frequency set at 1000000000000 ticks per second
info: kernel located at: dist/binaries/vmlinux.vexpress_gem5_v1_64
warn: Highest ARM exception-level set to AArch32 but the workload is for
AArch64. Assuming you wanted these to match.
system.vncserver: Listening for connections on port 5900
system.terminal: Listening for connections on port 3456
system.realview.uart1.device: Listening for connections on port 3457
system.realview.uart2.device: Listening for connections on port 3458
system.realview.uart3.device: Listening for connections on port 3459
0: system.remote_gdb: listening for remote gdb on port 7000
info: Using bootloader at address 0x10
info: Using kernel entry physical address at 0x80080000
info: Loading DTB file: m5out/system.dtb at address 0x88000000
**** REAL SIMULATION ****
warn: Existing EnergyCtrl, but no enabled DVFSHandler found.
info: Entering event queue @ 0. Starting simulation...
warn: Replacement policy updates recently became the responsibility of
SLICC state machines. Make sure to setMRU() near callbacks in .sm files!
warn: SCReg: Access to unknown device dcc0:site0:pos0:fn7:dev0
warn: Cache maintenance operations are not supported in Ruby.
gem5 has encountered a segmentation fault!
--- BEGIN LIBC BACKTRACE ---
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_Z15print_backtracev+0x2c)[0x56110817369c]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(+0xbdf76f)[0x56110818276f]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x12890)[0x7f516f641890]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_ZN14RubyPrefetcher16initializeStreamEmijRK15RubyRequestType+0x1a1)[0x561109336151]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_ZN14RubyPrefetcher11observeMissEmRK15RubyRequestType+0x5a7)[0x561109337627]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_ZN18L0Cache_Controller14po_observeMissERP11L0Cache_TBERP13L0Cache_Entrym+0x104)[0x561108652fa4]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_ZN18L0Cache_Controller18doTransitionWorkerE13L0Cache_Event13L0Cache_StateRS1_RP11L0Cache_TBERP13L0Cache_Entrym+0xc64)[0x56110865d2b4]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_ZN18L0Cache_Controller12doTransitionE13L0Cache_EventP13L0Cache_EntryP11L0Cache_TBEm+0x3d1)[0x56110865db01]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_ZN18L0Cache_Controller6wakeupEv+0x15d1)[0x561108660b51]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_ZN10EventQueue10serviceOneEv+0xa5)[0x561108179335]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_Z9doSimLoopP10EventQueue+0x108)[0x5611081939a8]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(_Z8simulatem+0xa5a)[0x5611081946fa]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(+0x2237390)[0x5611097da390]
./gem5/build/ARM_MESI_Three_Level/gem5.opt(+0xc45d40)[0x5611081e8d40]
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