I have 16Gb and have installed 64-bit background processing, but ArcMap seems to only be able to access 4Gb. I can use more in total with other programs. Is there a setting somewhere in Windows or ArcGIS that is only allowing it to access 4GB? Thanks.
121990
I am exporting 36"x48" label intensive maps as PDF. For urban areas, ArcMap 10 hangs or kicks back an error saying it could not complete the operation. I have a quad processor with 4 GB ram. I also increased cache size to 100GB and have a large pagefile size, etc.   Will increasing physical RAM to 6GB help, or is this a software limit to how much labeling it can handle?
51466
I keep getting the "Low on Space: Application data space is low. To free up" [the rest is cut off] message.  I've moved every app I can over to the SD card, cleared the cache, compacted my K9 mail cache.  Advanced Task Killer (ouch!) says I have 98M Available Memory  File Manager says I have 223M/748M (29%) free.  That's not so bad -- but I'm stuck in the no-updates scenario. The market downloads won't really start, gmail won't update, etc. I've rebooted several times, and nothing changes. Aaaargh.  What can be done, other than uninstalling everything ?
1432
I have ortophotos of an area that I need to serve as a background map for my vectors. I got it as 2500 files (71,5MB each) in raw TIFF format with corresponding TFW word file - 180GB of data. Coordinate system is local and it matches with my vectors (there is no EPSG code for it but I named it as “32805” and put a proper definition).  For desktop use in MapInfo I converted them to ECW (with some tool that comes with MapInfo) and retile as much bigger to have only 71 file because opening 2500 tiff files is overkill. I just merged 49 TIFF’s (7x7) into one ECW - 35000x35000pixels – largest is around 200MB) It works great and its really fast in MapInfo.  Now I am quite confused - HOW to serve them in GeoServer ?  I have publish one TIFF and one ECW for comparison. ECW is much faster in browser preview (I am aware of ECW server licensing issue but that shouldn’t be a problem). I have found a presentation “GeoServer on steroids” and read about ImageMosaic, ImagePyramid, retiling, adding overview etc it was quite informative but still don’t know what to do.   My question is : how should I do it ? Mosaic or Pyramid, and if is one of the answers positive, I need your advice or some hints. I would really like to be ECW because of disk space so there will be no need to keep 180GB of tiff’s on a server.   Data will be served through LAN with maximum 20 users connected at peak hour.SQL server have not so huge amount of data. Sorry if I miss some other info, but I will send it if needed.       Geoserver 2.1.4,  Windows 7 32bit,  2GB System Memory,  (1.7.0_09   (Java HotSpot(TM) Server VM), Native JAI+Native JAI ImageIO = true     Original TIFF gdalinfo D:\75720-47970.tif Driver: GTiff/GeoTIFF Files: D:\75720-47970.tif        D:\75720-47970.tfw Size is 5000, 5000 Coordinate System is `' Origin = (7572000.000000000000000,4797500.000000000000000) Pixel Size = (0.100000000000000,-0.100000000000000) Metadata:   TIFFTAG_SOFTWARE=Adobe Photoshop 7.0   TIFFTAG_DATETIME=2006:10:09 13:02:57   TIFFTAG_XRESOLUTION=72   TIFFTAG_YRESOLUTION=72   TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch) Image Structure Metadata:   INTERLEAVE=PIXEL Corner Coordinates: Upper Left  ( 7572000.000, 4797500.000) Lower Left  ( 7572000.000, 4797000.000) Upper Right ( 7572500.000, 4797500.000) Lower Right ( 7572500.000, 4797000.000) Center      ( 7572250.000, 4797250.000) Band 1 Block=5000x1 Type=Byte, ColorInterp=Red Band 2 Block=5000x1 Type=Byte, ColorInterp=Green Band 3 Block=5000x1 Type=Byte, ColorInterp=Blue -------------  ECW file which is retiled from 7x7  original tiffs  gdalinfo D:\OF-45.ecw Driver: ECW/ERDAS Compressed Wavelets (SDK 3.x) Files: D:\OF-45.ecw Size is 35000, 35000 Coordinate System is: LOCAL_CS["LOCAL - (unsupported)",     UNIT["Meter",1]] Origin = (7571500.000000000000000,4798500.000000000000000) Pixel Size = (0.100000000000000,-0.100000000000000) Corner Coordinates: Upper Left  ( 7571500.000, 4798500.000) Lower Left  ( 7571500.000, 4795000.000) Upper Right ( 7575000.000, 4798500.000) Lower Right ( 7575000.000, 4795000.000) Center      ( 7573250.000, 4796750.000) Band 1 Block=35000x1 Type=Byte, ColorInterp=Red    Overviews: 17500x17500, 8750x8750, 4375x4375, 2187x2187, 1093x1093, 546x546, 273x273, 136x136 Band 2 Block=35000x1 Type=Byte, ColorInterp=Green   Overviews: 17500x17500, 8750x8750, 4375x4375, 2187x2187, 1093x1093, 546x546, 273x273, 136x136 Band 3 Block=35000x1 Type=Byte, ColorInterp=Blue   Overviews: 17500x17500, 8750x8750, 4375x4375, 2187x2187, 1093x1093, 546x546, 273x273, 136x136
19601
Does anyone have experience with using very large heaps, 12 GB or higher in Java?   Does the GC make the program unusable? What GC params do you use? Which JVM, Sun or BEA would be better suited for this? Which platform, Linux or Windows, performs better under such conditions? In the case of Windows is there any performance difference to be had between 64 bit Vista and XP under such high memory loads?
11485
I'm attempting to mount a partition from a NAS and the block size is 65536 bytes, this is above my distribution's precompiled kernel memory paging size of 4KiB, so I cannot mount it normally.  Which kernel compilation parameters would I need to change to get a memory paging size large enough?  Would it be possible under the x86-64 architecture?  EDIT: There doesn't seem to be an option for it in make xconfig unless I'm just missing it.  From page_types.h under arch\x86\include\asm  /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT  12 #define PAGE_SIZE   (_AC(1,UL) &lt;&lt; PAGE_SHIFT) #define PAGE_MASK   (~(PAGE_SIZE-1))`   It doesn't look to be configurable.  I could change this number directly to 16 and it would probably make pretty explosions and destroy Tokyo.  I shall probably try it later this evening.
14268
I am writing a client-side Swing application (graphical font designer) on Java 5. Recently, I am running into java.lang.OutOfMemoryError: Java heap space error because I am not being conservative on memory usage. The user can open unlimited number of files, and the program keeps the opened objects in the memory. After a quick research I found  and others saying on Windows machine the JVM defaults max heap size as 64MB.  Given this situation, how should I deal with this constraint?  I could increase the max heap size using command line option to java, but that would require figuring out available RAM and writing some launching program or script. Besides, increasing to some finite max does not ultimately get rid of the issue.  I could rewrite some of my code to persist objects to file system frequently (using database is the same thing) to free up the memory. It could work, but it's probably a lot work too.  If you could point me to details of above ideas or some alternatives like automatic virtual memory, extending heap size dynamically, that will be great.
72233
I have an image of size 1GB (.tif), with the width and height 94000x71680. I would like to chunk this image into 20000X20000 tiles so that I can process them.   How can I do this?
91001
What I understand about 32-bit OS is, the address is expressed in 32 bits, so at most the OS could use 232 = 4G memory space -- I assume the unit is bytes, so 4GB.  Does this mean if any machine with a 32-bit OS (be it Windows or Unix) has more than 4GB total of RAM + page file on hard disk, for example 8GB RAM and 20GB page file, its memory will never be "used up"?  By "used up" I mean that increasing RAM or page file won't help the performance; of course, it's always possible an application will keep requesting memory from the OS but failing.  Similarly, if this 32-bit OS machine has 2GB RAM and 2GB page file, increasing the page file size won't help the performance. Is this true?
54753
I've been doing jmeter tests and have had a few OutOfMemoryExceptions, so I've bumped up the heap memory in JMeter. But now it seems I can't run anymore tests as it says I'm using 94.9% of 14Gb.  When I use df -h it says dev/sda1 is full  I was wondering if anyone can help me? I think it has to do with the JVM from the jmeter
93284
I'm wondering if anyone else has experienced significant performance penalties when using the ArcGIS buffer function with the 'dissolve' option on point features.  My dataset is a shapefile of 260 points, basically clustered into 9 groups so there is a significant amount of overlap.  The buffer option executes in a second or so, while the dissolve option executes in 12 minutes. So I'd be in trouble with 10,000 points, right? ESRI knowledge base wasn't too much help.
20794
I've recently purchased Windows 7 Ultimate.  I have an AMD Athlon64 X2 5000+ with 2GB DDR2 RAM.  I know RAM has gotten much cheaper, I know, I know, but I am not going to be able to upgrade my RAM for about a year.  My question is obviously this; will I get any benefit from installing 64-bit Windows over 32-bit if I'm only using 2GB of RAM?    As I understand, the minimum requirement is 2GB &amp; max is 192GB so if the minimum for 64-bit is 2GB &amp; the minimum for 32-bit is 1GB will I lose performance if I chose to install 64-bit at it's minimum requirement over 32-bit whose minimum is half the amount?  I would like to install the 64-bit edition if only because it's the future.  192GB of RAM! that's incredible! Plus I've heard it simply performs better.  But that is with a larger amount of RAM.  I've tried to make this question as easy to decipher as possible.  Any advice would be greatly appreciated.
64558
I started learning about pointers in C++ and I figured I should educate myself a bit on how memory works and is accessed. I read that when we say a processor is 64-bit, it has a 64-bit register and can access 2^64 address locations. I also read that it can fetch 64/8, so 8 bytes of data at a time, but the data bus is not the same thing as the register right? Do they need to be the same size or does that just happen to be the case usually? And is it the size of the register or the data bus size that determines what we refer to it as, such as 32/64-bit? Also is there a difference between register size and address size?
22205
I want use 4GB of RAM.  Can I use in Windows XP 32-bit?  Or should I go for Windows XP - 64-bit? Does it support 4GB of RAM?  Does Windows 7 32-bit support more than 4GB of RAM, or is >4GB support only available in Windows 7 64-bit?
35173
Does Unity have a map size limit and if there is what is the limit? Is there a way to work around it? I am making a open world zombie survival world and I want to make a really big map. Thanks!
88403
I have a 32-bit system which runs on a 64-bit processor. How do I convert it to be all-64-bit, without re-installing? I have seen somewhere that it is doable as a result of .
92695
I am looking for tools for regionalization / districting in GIS.  So far I have been able to identify    ArcGIS extension (now also )  (currently limited to 50k input polygons)  (not yet released)    Is there anything else available out there? Especially something that will have no problems in dealing with quite large dataset [~ 1.3 million polygons]?
5551
I'm running pdftoppm to convert a user-provided PDF into a 300DPI image.  This works great, except if the user provides an PDF with a very large page size.  pdftoppm will allocate enough memory to hold a 300DPI image of that size in memory, which for a 100 inch square page is 100*300 * 100*300 * 4 bytes per pixel = 3.5GB.  A malicious user could just give me a silly-large PDF and cause all kinds of problems.  So what I'd like to do is put some kind of hard limit on memory usage for a child process I'm about to run--just have the process die if it tries to allocate more than, say, 500MB of memory.  Is that possible?  I don't think ulimit can be used for this, but is there a one-process equivalent?