Re: [Numpy-discussion] Memory usage of numpy-arrays

2010-07-08 Thread Hannes Bretschneider
Sebastian Haase gmail.com> writes: > > I would expect a 700MB text file translate into less than 200MB of > data - assuming that you are talking about decimal numbers (maybe > total of 10 digits each + spaces) and saving as float32 binary. > So the problem would "only" be the loading in - rathe

Re: [Numpy-discussion] Memory usage of numpy-arrays

2010-07-08 Thread Sebastian Haase
On Thu, Jul 8, 2010 at 4:46 PM, Bruce Southey wrote: > On 07/08/2010 08:52 AM, Wes McKinney wrote: >> On Thu, Jul 8, 2010 at 9:26 AM, Hannes Bretschneider >>  wrote: >> >>> Dear NumPy developers, >>> >>> I have to process some big data files with high-frequency >>> financial data. I am trying to

Re: [Numpy-discussion] Memory usage of numpy-arrays

2010-07-08 Thread Bruce Southey
On 07/08/2010 08:52 AM, Wes McKinney wrote: > On Thu, Jul 8, 2010 at 9:26 AM, Hannes Bretschneider > wrote: > >> Dear NumPy developers, >> >> I have to process some big data files with high-frequency >> financial data. I am trying to load a delimited text file having >> ~700 MB with ~ 10 mill

Re: [Numpy-discussion] Memory usage of numpy-arrays

2010-07-08 Thread Wes McKinney
On Thu, Jul 8, 2010 at 9:26 AM, Hannes Bretschneider wrote: > Dear NumPy developers, > > I have to process some big data files with high-frequency > financial data. I am trying to load a delimited text file having > ~700 MB with ~ 10 million lines using numpy.genfromtxt(). The > machine is a Debia

[Numpy-discussion] Memory usage of numpy-arrays

2010-07-08 Thread Hannes Bretschneider
Dear NumPy developers, I have to process some big data files with high-frequency financial data. I am trying to load a delimited text file having ~700 MB with ~ 10 million lines using numpy.genfromtxt(). The machine is a Debian Lenny server 32bit with 3GB of memory. Since the file is just 700MB I

Re: [Numpy-discussion] memory usage of numpy arrays

2010-03-04 Thread Robert Kern
On Thu, Mar 4, 2010 at 19:10, kaby wrote: > > Hi. > I am using numpy arrays and when constructing an array I get a  "cannot > allocate memory for thread-local data: ABORT" > The array i'm constructing is > zeros((numVars, 2, numVars, 2), dtype=float) Where numVars is at about 2000. > > I was expec

[Numpy-discussion] memory usage of numpy arrays

2010-03-04 Thread kaby
Hi. I am using numpy arrays and when constructing an array I get a "cannot allocate memory for thread-local data: ABORT" The array i'm constructing is zeros((numVars, 2, numVars, 2), dtype=float) Where numVars is at about 2000. I was expecting the memory usage to be 2000*2000*2*2*8Bytes=128.000.