Hi Andreas, I increased the swap space to around 25GB (initially it was 9GB) and also added MAP_NORESERVE to mmap flag in physical.cc file. Still the simulation with mem-size=4096MB fails with the same error. With a mem-size of 2048MB, I can start the simulation, but after a couple of hours, it gets aborted with this error - "Out of memory trying to allocate internal tcmalloc data"
On Wed, Mar 12, 2014 at 4:00 PM, biswabandan panda <[email protected]>wrote: > 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 >> >> -- IMPORTANT NOTICE: The contents of this email and any attachments are >> confidential and may also be privileged. If you are not the intended >> recipient, please notify the sender immediately and do not disclose the >> contents to any other person, use it for any purpose, or store or copy the >> information in any medium. Thank you. >> >> ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, >> Registered in England & Wales, Company No: 2557590 >> ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, >> Registered in England & Wales, Company No: 2548782 >> >> -- IMPORTANT NOTICE: The contents of this email and any attachments are >> confidential and may also be privileged. If you are not the intended >> recipient, please notify the sender immediately and do not disclose the >> contents to any other person, use it for any purpose, or store or copy the >> information in any medium. Thank you. >> >> ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, >> Registered in England & Wales, Company No: 2557590 >> ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, >> Registered in England & Wales, Company No: 2548782 >> >> _______________________________________________ >> gem5-users mailing list >> [email protected] >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> > > > > -- > > > *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, > but we will beat the best! We might not be at the top, but we will rise.” > > > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > -- Thanks & Regards, Anju
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