Re: [Numpy-discussion] Memmap with multiprocessing

2011-04-27 Thread Thiago Franco Moraes 
On Tue, Apr 26, 2011 at 6:21 PM, Ralf Gommers
ralf.gomm...@googlemail.com wrote:
 On Mon, Apr 25, 2011 at 1:16 PM, Thiago Franco Moraes
 totonixs...@gmail.com wrote:
 Hi,

 Has anyone confirmed if this is a bug? Should I post this in the bug tracker?

 I see the same thing with recent master. Something very strange is
 going on in the memmap.__array_finalize__ method under Windows. Can
 you file a bug?

 Ralf

Hi Ralf,

Done http://projects.scipy.org/numpy/ticket/1809

Thanks!

 Thanks!

 On Tue, Apr 19, 2011 at 9:01 PM, Thiago Franco de Moraes
 totonixs...@gmail.com wrote:
 Hi all,

 I'm having a error using memmap objects shared among processes created
 by the multprocessing module. This error only happen in Windows with
 numpy 1.5 or above, in numpy 1.4.1 it doesn't happen, In Linux and Mac
 OS X it doesn't happen. This error is demonstrated by this little
 example script here https://gist.github.com/929168 , and the traceback
 is bellow (between traceback tags):

 traceback
 Process Process-1:
 Traceback (most recent call last):
  File C:\Python26\Lib\multiprocessing\process.py, line 232, in _bootstrap
    self.run()
  File C:\Python26\Lib\multiprocessing\process.py, line 88, in run
    self._target(*self._args, **self._kwargs)
  File C:\Documents and Settings\phamorim\Desktop\test.py, line 7, in
 print_ma
 trix
    print matrix
  File C:\Python26\Lib\site-packages\numpy\core\numeric.py, line 1379, in
 arra
 y_str
    return array2string(a, max_line_width, precision, suppress_small, ' ',
 , s
 tr)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 309, in
 ar
 ray2string
    separator, prefix)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 189, in
 _a
 rray2string
    data = _leading_trailing(a)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 162, in
 _l
 eading_trailing
    min(len(a), _summaryEdgeItems))]
  File C:\Python26\Lib\site-packages\numpy\core\memmap.py, line 257, in
 __arra
 y_finalize__
    self.filename = obj.filename
 AttributeError: 'memmap' object has no attribute 'filename'
 Exception AttributeError: AttributeError('NoneType' object has no attribute
 'te
 ll',) in bound method memmap.__del__ of memmap([0, 0, 0, 0, 0, 0, 0, 0, 0,
 0,
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0], dtype=int16) ignored
 /traceback

 I don't know if it's a bug, but I thought it's is import to report
 because the version 1.4.1 was working and 1.5.0 and above was not.

 Thanks!


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Re: [Numpy-discussion] Memmap with multiprocessing

2011-04-27 Thread Christoph Gohlke 
I don't think this was working correctly in numpy 1.4 either. The 
underlying problem seems to be that instance attributes of ndarray 
subtypes get lost during pickling:

import pickle
import numpy as np
class aarray(np.ndarray):
 def __new__(subtype):
 self = np.ndarray.__new__(subtype, (1,))
 self.attr = 'attr'
 return self
 def __array_finalize__(self, obj):
 self.attr = getattr(obj, 'attr', None)
a = aarray()
b = pickle.loads(a.dumps())
assert a.attr == b.attr, (a.attr, b.attr)

AssertionError: ('attr', None)

Christoph


On 4/26/2011 2:21 PM, Ralf Gommers wrote:
 On Mon, Apr 25, 2011 at 1:16 PM, Thiago Franco Moraes
 totonixs...@gmail.com  wrote:
 Hi,

 Has anyone confirmed if this is a bug? Should I post this in the bug tracker?

 I see the same thing with recent master. Something very strange is
 going on in the memmap.__array_finalize__ method under Windows. Can
 you file a bug?

 Ralf



 Thanks!

 On Tue, Apr 19, 2011 at 9:01 PM, Thiago Franco de Moraes
 totonixs...@gmail.com  wrote:
 Hi all,

 I'm having a error using memmap objects shared among processes created
 by the multprocessing module. This error only happen in Windows with
 numpy 1.5 or above, in numpy 1.4.1 it doesn't happen, In Linux and Mac
 OS X it doesn't happen. This error is demonstrated by this little
 example script here https://gist.github.com/929168 , and the traceback
 is bellow (betweentraceback  tags):

 traceback
 Process Process-1:
 Traceback (most recent call last):
   File C:\Python26\Lib\multiprocessing\process.py, line 232, in _bootstrap
 self.run()
   File C:\Python26\Lib\multiprocessing\process.py, line 88, in run
 self._target(*self._args, **self._kwargs)
   File C:\Documents and Settings\phamorim\Desktop\test.py, line 7, in
 print_ma
 trix
 print matrix
   File C:\Python26\Lib\site-packages\numpy\core\numeric.py, line 1379, in
 arra
 y_str
 return array2string(a, max_line_width, precision, suppress_small, ' ',
 , s
 tr)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 309, 
 in
 ar
 ray2string
 separator, prefix)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 189, 
 in
 _a
 rray2string
 data = _leading_trailing(a)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 162, 
 in
 _l
 eading_trailing
 min(len(a), _summaryEdgeItems))]
   File C:\Python26\Lib\site-packages\numpy\core\memmap.py, line 257, in
 __arra
 y_finalize__
 self.filename = obj.filename
 AttributeError: 'memmap' object has no attribute 'filename'
 Exception AttributeError: AttributeError('NoneType' object has no attribute
 'te
 ll',) inbound method memmap.__del__ of memmap([0, 0, 0, 0, 0, 0, 0, 0, 0,
 0,
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0], dtype=int16)  ignored
 /traceback

 I don't know if it's a bug, but I thought it's is import to report
 because the version 1.4.1 was working and 1.5.0 and above was not.

 Thanks!


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 NumPy-Discussion@scipy.org
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Re: [Numpy-discussion] Memmap with multiprocessing

2011-04-27 Thread Brent Pedersen 
On Wed, Apr 27, 2011 at 4:07 PM, Christoph Gohlke cgoh...@uci.edu wrote:
 I don't think this was working correctly in numpy 1.4 either. The
 underlying problem seems to be that instance attributes of ndarray
 subtypes get lost during pickling:

 import pickle
 import numpy as np
 class aarray(np.ndarray):
     def __new__(subtype):
         self = np.ndarray.__new__(subtype, (1,))
         self.attr = 'attr'
         return self
     def __array_finalize__(self, obj):
         self.attr = getattr(obj, 'attr', None)
 a = aarray()
 b = pickle.loads(a.dumps())
 assert a.attr == b.attr, (a.attr, b.attr)

 AssertionError: ('attr', None)

 Christoph


possibly related to this ticket:
http://projects.scipy.org/numpy/ticket/1452



 On 4/26/2011 2:21 PM, Ralf Gommers wrote:
 On Mon, Apr 25, 2011 at 1:16 PM, Thiago Franco Moraes
 totonixs...@gmail.com  wrote:
 Hi,

 Has anyone confirmed if this is a bug? Should I post this in the bug 
 tracker?

 I see the same thing with recent master. Something very strange is
 going on in the memmap.__array_finalize__ method under Windows. Can
 you file a bug?

 Ralf



 Thanks!

 On Tue, Apr 19, 2011 at 9:01 PM, Thiago Franco de Moraes
 totonixs...@gmail.com  wrote:
 Hi all,

 I'm having a error using memmap objects shared among processes created
 by the multprocessing module. This error only happen in Windows with
 numpy 1.5 or above, in numpy 1.4.1 it doesn't happen, In Linux and Mac
 OS X it doesn't happen. This error is demonstrated by this little
 example script here https://gist.github.com/929168 , and the traceback
 is bellow (betweentraceback  tags):

 traceback
 Process Process-1:
 Traceback (most recent call last):
   File C:\Python26\Lib\multiprocessing\process.py, line 232, in 
 _bootstrap
     self.run()
   File C:\Python26\Lib\multiprocessing\process.py, line 88, in run
     self._target(*self._args, **self._kwargs)
   File C:\Documents and Settings\phamorim\Desktop\test.py, line 7, in
 print_ma
 trix
     print matrix
   File C:\Python26\Lib\site-packages\numpy\core\numeric.py, line 1379, in
 arra
 y_str
     return array2string(a, max_line_width, precision, suppress_small, ' ',
 , s
 tr)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 309, 
 in
 ar
 ray2string
     separator, prefix)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 189, 
 in
 _a
 rray2string
     data = _leading_trailing(a)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 162, 
 in
 _l
 eading_trailing
     min(len(a), _summaryEdgeItems))]
   File C:\Python26\Lib\site-packages\numpy\core\memmap.py, line 257, in
 __arra
 y_finalize__
     self.filename = obj.filename
 AttributeError: 'memmap' object has no attribute 'filename'
 Exception AttributeError: AttributeError('NoneType' object has no 
 attribute
 'te
 ll',) inbound method memmap.__del__ of memmap([0, 0, 0, 0, 0, 0, 0, 0, 0,
 0,
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0], dtype=int16)  ignored
 /traceback

 I don't know if it's a bug, but I thought it's is import to report
 because the version 1.4.1 was working and 1.5.0 and above was not.

 Thanks!


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Re: [Numpy-discussion] Memmap with multiprocessing

2011-04-26 Thread Ralf Gommers 
On Mon, Apr 25, 2011 at 1:16 PM, Thiago Franco Moraes
totonixs...@gmail.com wrote:
 Hi,

 Has anyone confirmed if this is a bug? Should I post this in the bug tracker?

I see the same thing with recent master. Something very strange is
going on in the memmap.__array_finalize__ method under Windows. Can
you file a bug?

Ralf



 Thanks!

 On Tue, Apr 19, 2011 at 9:01 PM, Thiago Franco de Moraes
 totonixs...@gmail.com wrote:
 Hi all,

 I'm having a error using memmap objects shared among processes created
 by the multprocessing module. This error only happen in Windows with
 numpy 1.5 or above, in numpy 1.4.1 it doesn't happen, In Linux and Mac
 OS X it doesn't happen. This error is demonstrated by this little
 example script here https://gist.github.com/929168 , and the traceback
 is bellow (between traceback tags):

 traceback
 Process Process-1:
 Traceback (most recent call last):
  File C:\Python26\Lib\multiprocessing\process.py, line 232, in _bootstrap
    self.run()
  File C:\Python26\Lib\multiprocessing\process.py, line 88, in run
    self._target(*self._args, **self._kwargs)
  File C:\Documents and Settings\phamorim\Desktop\test.py, line 7, in
 print_ma
 trix
    print matrix
  File C:\Python26\Lib\site-packages\numpy\core\numeric.py, line 1379, in
 arra
 y_str
    return array2string(a, max_line_width, precision, suppress_small, ' ',
 , s
 tr)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 309, in
 ar
 ray2string
    separator, prefix)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 189, in
 _a
 rray2string
    data = _leading_trailing(a)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 162, in
 _l
 eading_trailing
    min(len(a), _summaryEdgeItems))]
  File C:\Python26\Lib\site-packages\numpy\core\memmap.py, line 257, in
 __arra
 y_finalize__
    self.filename = obj.filename
 AttributeError: 'memmap' object has no attribute 'filename'
 Exception AttributeError: AttributeError('NoneType' object has no attribute
 'te
 ll',) in bound method memmap.__del__ of memmap([0, 0, 0, 0, 0, 0, 0, 0, 0,
 0,
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0], dtype=int16) ignored
 /traceback

 I don't know if it's a bug, but I thought it's is import to report
 because the version 1.4.1 was working and 1.5.0 and above was not.

 Thanks!


 ___
 NumPy-Discussion mailing list
 NumPy-Discussion@scipy.org
 http://mail.scipy.org/mailman/listinfo/numpy-discussion

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Re: [Numpy-discussion] Memmap with multiprocessing

2011-04-26 Thread Warren Weckesser 
On Tue, Apr 26, 2011 at 4:21 PM, Ralf Gommers
ralf.gomm...@googlemail.comwrote:

 On Mon, Apr 25, 2011 at 1:16 PM, Thiago Franco Moraes
 totonixs...@gmail.com wrote:
  Hi,
 
  Has anyone confirmed if this is a bug? Should I post this in the bug
 tracker?

 I see the same thing with recent master. Something very strange is
 going on in the memmap.__array_finalize__ method under Windows. Can
 you file a bug?



Just a confirmation: I get the error with numpy 1.5.1, Python 2.7.1 in
Windows XP, but not in Mac OSX or Linux (Ubuntu).

Warren


 Ralf


 
  Thanks!
 
  On Tue, Apr 19, 2011 at 9:01 PM, Thiago Franco de Moraes
  totonixs...@gmail.com wrote:
  Hi all,
 
  I'm having a error using memmap objects shared among processes created
  by the multprocessing module. This error only happen in Windows with
  numpy 1.5 or above, in numpy 1.4.1 it doesn't happen, In Linux and Mac
  OS X it doesn't happen. This error is demonstrated by this little
  example script here https://gist.github.com/929168 , and the traceback
  is bellow (between traceback tags):
 
  traceback
  Process Process-1:
  Traceback (most recent call last):
   File C:\Python26\Lib\multiprocessing\process.py, line 232, in
 _bootstrap
 self.run()
   File C:\Python26\Lib\multiprocessing\process.py, line 88, in run
 self._target(*self._args, **self._kwargs)
   File C:\Documents and Settings\phamorim\Desktop\test.py, line 7, in
  print_ma
  trix
 print matrix
   File C:\Python26\Lib\site-packages\numpy\core\numeric.py, line 1379,
 in
  arra
  y_str
 return array2string(a, max_line_width, precision, suppress_small, '
 ',
  , s
  tr)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line
 309, in
  ar
  ray2string
 separator, prefix)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line
 189, in
  _a
  rray2string
 data = _leading_trailing(a)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line
 162, in
  _l
  eading_trailing
 min(len(a), _summaryEdgeItems))]
   File C:\Python26\Lib\site-packages\numpy\core\memmap.py, line 257, in
  __arra
  y_finalize__
 self.filename = obj.filename
  AttributeError: 'memmap' object has no attribute 'filename'
  Exception AttributeError: AttributeError('NoneType' object has no
 attribute
  'te
  ll',) in bound method memmap.__del__ of memmap([0, 0, 0, 0, 0, 0, 0,
 0, 0,
  0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 0,
0, 0, 0, 0, 0, 0, 0, 0], dtype=int16) ignored
  /traceback
 
  I don't know if it's a bug, but I thought it's is import to report
  because the version 1.4.1 was working and 1.5.0 and above was not.
 
  Thanks!
 
 
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Re: [Numpy-discussion] Memmap with multiprocessing

2011-04-25 Thread Thiago Franco Moraes 
Hi,

Has anyone confirmed if this is a bug? Should I post this in the bug tracker?

Thanks!

On Tue, Apr 19, 2011 at 9:01 PM, Thiago Franco de Moraes
totonixs...@gmail.com wrote:
 Hi all,

 I'm having a error using memmap objects shared among processes created
 by the multprocessing module. This error only happen in Windows with
 numpy 1.5 or above, in numpy 1.4.1 it doesn't happen, In Linux and Mac
 OS X it doesn't happen. This error is demonstrated by this little
 example script here https://gist.github.com/929168 , and the traceback
 is bellow (between traceback tags):

 traceback
 Process Process-1:
 Traceback (most recent call last):
  File C:\Python26\Lib\multiprocessing\process.py, line 232, in _bootstrap
    self.run()
  File C:\Python26\Lib\multiprocessing\process.py, line 88, in run
    self._target(*self._args, **self._kwargs)
  File C:\Documents and Settings\phamorim\Desktop\test.py, line 7, in
 print_ma
 trix
    print matrix
  File C:\Python26\Lib\site-packages\numpy\core\numeric.py, line 1379, in
 arra
 y_str
    return array2string(a, max_line_width, precision, suppress_small, ' ',
 , s
 tr)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 309, in
 ar
 ray2string
    separator, prefix)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 189, in
 _a
 rray2string
    data = _leading_trailing(a)
  File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 162, in
 _l
 eading_trailing
    min(len(a), _summaryEdgeItems))]
  File C:\Python26\Lib\site-packages\numpy\core\memmap.py, line 257, in
 __arra
 y_finalize__
    self.filename = obj.filename
 AttributeError: 'memmap' object has no attribute 'filename'
 Exception AttributeError: AttributeError('NoneType' object has no attribute
 'te
 ll',) in bound method memmap.__del__ of memmap([0, 0, 0, 0, 0, 0, 0, 0, 0,
 0,
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 0, 0, 0], dtype=int16) ignored
 /traceback

 I don't know if it's a bug, but I thought it's is import to report
 because the version 1.4.1 was working and 1.5.0 and above was not.

 Thanks!


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[Numpy-discussion] Memmap with multiprocessing

2011-04-19 Thread Thiago Franco de Moraes 
Hi all,

I'm having a error using memmap objects shared among processes created
by the multprocessing module. This error only happen in Windows with
numpy 1.5 or above, in numpy 1.4.1 it doesn't happen, In Linux and Mac
OS X it doesn't happen. This error is demonstrated by this little
example script here https://gist.github.com/929168 , and the traceback
is bellow (between traceback tags):

traceback
Process Process-1:
Traceback (most recent call last):
   File C:\Python26\Lib\multiprocessing\process.py, line 232, in 
_bootstrap
 self.run()
   File C:\Python26\Lib\multiprocessing\process.py, line 88, in run
 self._target(*self._args, **self._kwargs)
   File C:\Documents and Settings\phamorim\Desktop\test.py, line 7, in 
print_ma
trix
 print matrix
   File C:\Python26\Lib\site-packages\numpy\core\numeric.py, line 
1379, in arra
y_str
 return array2string(a, max_line_width, precision, suppress_small, ' 
', , s
tr)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 
309, in ar
ray2string
 separator, prefix)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 
189, in _a
rray2string
 data = _leading_trailing(a)
   File C:\Python26\Lib\site-packages\numpy\core\arrayprint.py, line 
162, in _l
eading_trailing
 min(len(a), _summaryEdgeItems))]
   File C:\Python26\Lib\site-packages\numpy\core\memmap.py, line 257, 
in __arra
y_finalize__
 self.filename = obj.filename
AttributeError: 'memmap' object has no attribute 'filename'
Exception AttributeError: AttributeError('NoneType' object has no 
attribute 'te
ll',) in bound method memmap.__del__ of memmap([0, 0, 0, 0, 0, 0, 0, 
0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0], dtype=int16) ignored
/traceback

I don't know if it's a bug, but I thought it's is import to report
because the version 1.4.1 was working and 1.5.0 and above was not.

Thanks!

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