[SciPy-dev] St9bad_alloc

Maik Trömel mtroemel81@web...
Thu Jun 21 04:55:26 CDT 2007


I've watched the memory behaviour with 'top'. The example script runs for example until the third sub-matirx constantly with 33% memory. Then the memory usage raises very fast to 86% bevor the script crashes.

For comparison:

cat /proc/meminfo
MemTotal:      2075184 kB
MemFree:        324188 kB
Buffers:        139112 kB
Cached:         998348 kB
SwapCached:      70988 kB
Active:         990008 kB
Inactive:       531008 kB
HighTotal:     1177788 kB
HighFree:       137732 kB
LowTotal:       897396 kB
LowFree:        186456 kB
SwapTotal:     1951888 kB
SwapFree:      1819768 kB
Dirty:             256 kB
Writeback:           0 kB
AnonPages:      379712 kB
Mapped:          98196 kB
Slab:           208668 kB
PageTables:       2948 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   2989480 kB
Committed_AS:   735168 kB
VmallocTotal:   114680 kB
VmallocUsed:     14140 kB
VmallocChunk:   100312 kB


> -----Ursprüngliche Nachricht-----
> Von: SciPy Developers List <scipy-dev@scipy.org>
> Gesendet: 21.06.07 11:05:12
> An: SciPy Developers List <scipy-dev@scipy.org>
> Betreff: Re: [SciPy-dev] St9bad_alloc


> 
> David Cournapeau wrote:
> > Maik Trömel wrote:
> >   
> >> My system has:
> >> Python 2.4.1
> >> Scipy '0.5.2'
> >> Numpy '1.0.1'
> >>
> >> The Second System was Python 2.5.1, with the same scipy and numpy versions.
> >> Both system are running with Debian Testing.
> >>
> >>     
> > Something to keep in mind is that your script is using a lot of memory 
> > (several hundred MB seems likely). This would depend on the algorithms 
> > used, but with arrays of 2000x2000 double, it could simply be that one 
> > new call in the C++ code fails because no memory is available to the 
> > system anymore (new raises bad_alloc if not enough memory can be 
> > allocated, if I remember correctly).
> >
> > How much memory do you have on your computer ? Can you check the memory 
> > behaviour of the application with eg top, etc... ?
> >
> > David
> > _______________________________________________
> > Scipy-dev mailing list
> > Scipy-dev@scipy.org
> > http://projects.scipy.org/mailman/listinfo/scipy-dev
> >   
> Just for comparison with Maik
> 
> cat /proc/meminfo
> 
> MemTotal:      1024720 kB
> MemFree:         17524 kB
> Buffers:         48128 kB
> Cached:         488172 kB
> SwapCached:       4416 kB
> Active:         674772 kB
> Inactive:       227788 kB
> HighTotal:           0 kB
> HighFree:            0 kB
> LowTotal:      1024720 kB
> LowFree:         17524 kB
> SwapTotal:     4200956 kB
> SwapFree:      4151064 kB
> Dirty:              20 kB
> Writeback:           0 kB
> Mapped:         499428 kB
> Slab:            83668 kB
> CommitLimit:   4713316 kB
> Committed_AS:   645804 kB
> PageTables:       7212 kB
> VmallocTotal: 34359738367 kB
> VmallocUsed:     14860 kB
> VmallocChunk: 34359720875 kB
> HugePages_Total:     0
> HugePages_Free:      0
> Hugepagesize:     2048 kB
>  
> Nils
> 
> _______________________________________________
> Scipy-dev mailing list
> Scipy-dev@scipy.org
> http://projects.scipy.org/mailman/listinfo/scipy-dev
> 


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