[Numpy-discussion] numpy.ma.sort failing with bus error

Pierre GM pgmdevlist@gmail....
Mon Nov 24 14:04:11 CST 2008


Charles,
Confirmed on my machine...
I gonna have to clean ma.sort, as there are indeed some temporaries  
that probably don't need to be created. I must warn you however that I  
won;t have a lot of time to spend on that in the next few days. In any  
case, of course, I'll keep you posted.
Thx for reporting!


On Nov 24, 2008, at 12:03 PM, Charles سمير Doutriaux wrote:

> i mistyped the second line of the sample failing script
> it should obviously read:
> a=numpy.ma.ones((16800,60,96),'f')
> not numpy.ma.sort((16800,60,96),'f')
>
> C.
>
> On Nov 24, 2008, at 8:40 AM, Charles سمير Doutriaux wrote:
>
>> Hello,
>>
>> Using numpy 1.2.1  on a mac os 10.5
>>
>>
>> I admit the user was sort of stretching the limits but (on his
>> machine)
>>
>> import numpy
>> a=numpy.ones((16800,60,96),'f')
>> numpy.sort(a,axis=0)
>>
>> works
>>
>> import numpy.ma
>> a=numpy.ma.sort((16800,60,96),'f')
>> numpy.ma.sort(a,axis=0)
>>
>> failed with some malloc error:
>> python(435) malloc: *** mmap(size=2097152) failed (error code=12)
>> *** error: can't allocate region
>> *** set a breakpoint in malloc_error_break to debug
>> Bus error
>>
>> Since there's no mask I don't really see how much more memory it's
>> using. Beside changing 16800 to 15800 still fails (and now that  
>> should
>> be using much less memory)
>>
>> Anyhow I would expect i nicer error than a bus error :)
>>
>> Thx,
>>
>> C>
>>
>>
>>
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>
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