Hi Andreas,
We (me and Anju) are working together on it. Till now,
no luck and we migrated into a 32GB machine. We will let you know if
something works.
On Wed, Mar 12, 2014 at 3:57 PM, Andreas Hansson <[email protected]>wrote:
> Hi Anju,
>
> What was the outcome on this one? Any luck?
>
> Thanks,
>
> Andreas
>
> From: Andreas Hansson <[email protected]>
>
> Reply-To: gem5 users mailing list <[email protected]>
> Date: Monday, 10 March 2014 14:08
>
> To: gem5 users mailing list <[email protected]>
> Subject: Re: [gem5-users] mmap error when I increase mem-size
>
> Hi Anju,
>
> Have a look at:
> http://stackoverflow.com/questions/4803152/mmap-fails-when-length-is-larger-than-4gb
>
> I suspect that it is your swap allocation that is running out. Could you
> try adding MAP_NORESERVE to the mmap flags in physical.cc?
>
> Note that this is not POSIX, and we'd have to make this OS dependent if
> we want to make it the default behaviour.
>
> Andreas
>
> From: Anju M A <[email protected]>
> Reply-To: gem5 users mailing list <[email protected]>
> Date: Monday, 10 March 2014 13:55
> To: gem5 users mailing list <[email protected]>
> Subject: [gem5-users] mmap error when I increase mem-size
>
> Hello,
>
> When I try to run mcf application with 4096MB as mem-size, I am getting
> the following error :
>
>
>
>
> *mmap: Invalid argument fatal: Could not mmap 4294967296 bytes for range
> [0 : 0xffffffff]! @ cycle 0
> [createBackingStore:build/ALPHA/mem/physical.cc, line 158] Memory Usage:
> 37068 KBytes*
>
> The command used to run the simulation is :
> ./build/ALPHA/gem5.fast ./configs/example/se.py -n 1 --caches --l2cache
> --cpu-type=detailed --bench mcf --maxinsts 500000000 --fast-forward
> 5000000000 --warmup-insts 250000000 --mem-type=DDR3_1600_x64
> --mem-channels=1 *--mem-size=4096MB* --sys-clock=2.4GHz
>
>
> free -m gives this result on my system :
> total used *free*
> shared buffers cached
> Mem: 16157 2960 *13196*
> 0 109 988
> -/+ buffers/cache: 1863 14294
> Swap: 9535 0 9535
>
> If I have around 13GB of free memory in my system, why is mmap failing?
> How can I resolve this issue?
> Any help would be appreciated a lot.
>
> --
> Thanks & Regards,
> Anju
>
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*thanks®ards*
*BISWABANDAN*
http://www.cse.iitm.ac.in/~biswa/
"We might fall down, but we will never lay down. We might not be the best,
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