[Numpy-discussion] memoryerror with numpy.fromfile

Michael Hearne mhearne@usgs....
Thu May 21 11:31:28 CDT 2009

I am getting a MemoryError from a numpy.fromfile() call in an  
application I am trying to deploy.  Normally I would assume that this  
would mean that I don't have enough memory available on the system.   
However, if I run vmstat (Linux) at the same time as my process, I see  
that I have 3+ Gigabytes of memory free, and no swap space being  
used.  I can't think of a way to track down this problem, so I'm  
punting to the list.  The only thing I can imagine is that someone  
Python has been allocated X amount of space (very small relative to  
the memory actually available), and is asking for more than X.  I  
don't know if this is true, or if there is even a way to check it.   

Version info:
Linux RedHat 5 kernel 2.6.18-128.1.10.el5PAE
Python 2.5.4 -- EPD_Py25 4.3.0
numpy 1.3.0

Can anyone suggest more tests that I can do?



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