Hi,
Is there any way to share variables between different program on different
cores in SE mode?
My script is :
build/X86/gem5.opt \
configs/example/se.py \
--cpu-type=DerivO3CPU \
--sys-clock=4GHz \
-c program1;program2;program3;program4 \
-n 4 \
--caches --l2cache
This script makes every program run on their own core.
Now I want to allocate a continuous memory space and split the space into four
chunks for every program. And every program will do things on their own chunk.
I know using multi-threading can achieve this goal. But there are bugs in the
newest gem5 version when running multi-threading.
I have also tried to use mmap, but there is a warn "mmap: writing to shared
mmap region is currently unsupported. The write succeeds on the target, but it
will not be propagated to the host or shared mappings".
Another way I think of is to use map function in Process.py. Firstly I map a
contiguous range of virtual addresses in every process's address space to a
common contiguous range of physical addresses. But I don't know how to allocate
memory in the specified virtual address.
I appreciate your help very much.
Thanks,
Kano
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