Hi Aditya,
The first issue (with 4096 MB) is probably due to the memory map of the system,
with a chunk of memory available before the device addresses, and then
additional space above the devices. When you set the memory to 4096 MB I
suspect it is getting into the device range, and it seems there is no check
(besides the bus being unhappy). I tend to recall Nilay did some modifications
here, so perhaps all you need to do is update to the latest gem5 trunk.
The second issue is that you are using the abstract class SimpleDRAM. You have
to use one of the derived classes, e.g. DDR3_1600_x64. I am surprised this was
not caught in the script (as it checks for abstract classes in MemConfig.py).
I’ll give it a spin and see how it behaves.
Andreas
From: Aditya Deshpande
<[email protected]<mailto:[email protected]>>
Reply-To: gem5 users mailing list
<[email protected]<mailto:[email protected]>>
Date: Tuesday, 8 April 2014 00:54
To: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Subject: [gem5-users] Problems with Running X86 FS simulation
Hello All,
I am trying to run X86 in FS mode using following command line
./build/X86_MESI_Two_Level/gem5.opt configs/example/fs.py
--disk-image=/nfs/div1/adeshpan/arch/x86_disks/disks/x86root-parsec_ad.img
--kernel=/nfs/div1/adeshpan/arch/x86_disks/binaries/x86_64-vmlinux-2.6.22.9
--caches --l1d_size=64kB --l1i_size=64kB --l2cache --l2_size=512kB
--cacheline_size=64 --num-cpus=1 --cpu-type=TimingSimpleCPU --mem-size=4096MB
...
Global frequency set at 1000000000000 ticks per second
info: kernel located at:
/nfs/div1/adeshpan/arch/x86_disks/binaries/x86_64-vmlinux-2.6.22.9
0: rtc: Real-time clock set to Sun Jan 1 00:00:00 2012
Listening for com_1 connection on port 3456
warn: Reading current count from inactive timer.
fatal: system.membus has two ports with same range:
system.mem_ctrls.port
system.bridge.slave
@ cycle 0
[recvRangeChange:build/X86_MESI_Two_Level/mem/bus.cc, line 421]
Memory Usage: 4505484 KBytes
When I remove the last option of --mem-size=4096MB, the simulation executes. I
want to set memory size. Is there any other way of doing this with
/config/example/fs.py?
Another thing when I use mem-type=SimpleDRAM. I get following error:
./build/X86_MESI_Two_Level/gem5.opt configs/example/fs.py
--disk-image=/nfs/div1/adeshpan/arch/x86_disks/disks/x86root-parsec_ad.img
--kernel=/nfs/div1/adeshpan/arch/x86_disks/binaries/x86_64-vmlinux-2.6.22.9
--caches --l1d_size=64kB --l1i_size=64kB --l2cache --l2_size=512kB --num-cpus=1
--cpu-type=TimingSimpleCPU --mem-type=SimpleDRAM --mem-size=4096MB
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/nfs/div1/adeshpan/arch/gem5/src/python/m5/main.py", line 388, in main
exec filecode in scope
File "configs/example/fs.py", line 177, in <module>
MemConfig.config_mem(options, test_sys)
File "/nfs/div1/adeshpan/arch/gem5/configs/common/MemConfig.py", line 175, in
config_mem
rowbuffer_size = ctrl.device_rowbuffer_size.value * \
File "/nfs/div1/adeshpan/arch/gem5/src/python/m5/SimObject.py", line 734, in
__getattr__
raise AttributeError, err_string
AttributeError: object 'SimpleDRAM' has no attribute 'device_rowbuffer_size'
(C++ object is not yet constructed, so wrapped C++ methods are unavailable.)
Any idea how to fix this?
Any help is appreciated.
Regards,
Aditya
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