Re: Where are all my "memories" gone?
- To: mathgroup at smc.vnet.net
- Subject: [mg122597] Re: Where are all my "memories" gone?
- From: Oliver Ruebenkoenig <ruebenko at wolfram.com>
- Date: Thu, 3 Nov 2011 03:43:34 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <201111021121.GAA03545@smc.vnet.net>
On Wed, 2 Nov 2011, Patrick Scheibe wrote: > Hi, > > I have a bit of a delicate problem here. On a fresh kernel this > > data = Table[RandomInteger[{0, 255}], {i, 100*2^20}]; > ByteCount[data]/2.^20 > > results in exactly 400MB. My resource-manager of the operating system > confirms it by telling me the MathKernel occupies 422MB of memory. > > In real life, I'm working with tif-images stacks. I only import the > underlying data and not the images itself. > > path = "/long/path/to/aLargeImage.tif"; > data = Import[path, "Data"]; > ByteCount[data]/2.^30 > > tells me 3.88GB which seems reasonable since the tif is about 2.0GB on > the drive. What does *not* look reasonable is, that Mathematica occupies > now 9.7GB of my memory and it doesn't seem to know: > > In[4]:= {MemoryInUse[], MemoryInUse[$FrontEnd]}/2.^30 > > Out[4]= {3.9044, 0.0000874288} > > Can anyone give any useful information? > > Cheers > Patrick > > My OS is: > Linux-x86-64 > Ubuntu 10.04 > > Hallo Patrick, we were not able to reproduce this on a Mac - perhaps it is best you send this to support at wolfram.com. Perhaps this is a memory leak in Import - but this speculation and one would have to look at the specific example. The support can then also tell you where to out the 2GB picture. Oliver
- References:
- Where are all my "memories" gone?
- From: Patrick Scheibe <pscheibe@trm.uni-leipzig.de>
- Where are all my "memories" gone?