Hi
Have you modified the code in a way to create new addresses?
You should note that the unmapped address is in the range of 4GB< <
8GB. If you increase the memory to 8GB, that specific address will be
resolved but you may see another error for addresses larger than 8GB!!

Hope that helps


On 2/18/14, Siddharth Nilakantan <sn...@drexel.edu> wrote:
> Hi All,
>
> I'm using Gem5's SE mode with Splash-2 compiled for m5threads. When running
> the Cholesky, water-spatial and ocean benchmarks I noticed the "panic:
> Tried to read unmapped address" error. Based on previous questions of the
> same type, I made sure to try testing the executables under Valgrind. There
> are no memory leaks, so I'm not sure what is happening.
>
> build/X86_MESI_CMP_directory/gem5.opt configs/example/se.py
> --garnet-network=fixed --topology=Mesh --ruby
> --cmd=~/benchmarks/splash2_gem5se/splash2/codes/kernels/cholesky/CHOLESKY
> --options="-p8
>  ~/benchmarks/splash2_gem5se/splash2/codes/kernels/cholesky/inputs/tk23.O"
> --num-cpus=8 --num-dirs=8 --num-l2caches=8 --l1d_size=64kB --l1d_assoc=4
> --l1i_size=64kB --l1i_assoc=4 --l2_size=4096kB --l2_assoc=8
> .
> .
> .
>
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(0, 7020308, ...)
> warn: ignoring syscall futex(1, 7020308, ...)
> warn: ignoring syscall futex(1, 7020308, ...)
> *panic: Tried to read unmapped address 0x140495a85.*
>  @ cycle 143932527000
> [invoke:build/X86_MESI_CMP_directory/arch/x86/faults.cc, line 160]
> Memory Usage: 4599016 KBytes
> Program aborted at cycle 143932527000
>
>  The system is configured to have 4GB of Physical memory and the memory
> usage is still higher. It always dies at the same address and the same
> cycle number.
>
> Can anyone help me figure out why this is happening? What flags should I
> turn on to get more useful information?
>
> Regards,
> Sid
>


-- 
Regards,
Mahmood
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