You should not need to remove libgcj; it is needed by some applications such as openoffice.
Can you give a small example of the different behaviour you see in org.geotools.geometry.jts.JTS.transform? I do not know if JTS uses strictfp to ensure exact portability of floating point operations: http://en.wikipedia.org/wiki/Strictfp Kind regards, Ben. On 15/02/12 14:06, Zheng Xudong wrote: > I have removed java-1.4.2-gcj-compat from Red Hat, and tried OpenJDK 1.6.0 > x64 and Oracle JDK 1.6/1.7 x64, but still have the problem, but the same > version of JDK on Ubuntu have no problem, the i586 JDK version on Red Hat > also have no problem. > > And I found there are some gcj related packages installed on the Red Hat: > libgcj-4.1.2-51.el5 > libgcj-devel-4.1.2-51.el5 > libgcj-devel-4.1.2-51.el5 > libgcj-4.1.2-51.el5 > libgcj-src-4.1.2-51.el5 > > should I remove them all to solve the problem? > > On Wed, Feb 15, 2012 at 1:44 PM, Ben > Caradoc-Davies<[email protected]> wrote: > What JRE/JDK are you using? Be very careful that you are not using gcj as > this is the default for some earlier Red Hat versions. gcj's behaviour > differs from the Oracle and OpenJDK implementations. gcj is *not* a supported > implementation for GeoTools. I think it is stuck at 1.5 and you will also > need 1.6 (Oracle or OpenJDK) for trunk and the upcoming 8.0. > > What do you get if at the command line you run: > > java -version > > Bad (gcj): > java version "1.5.0" > gij (GNU libgcj) version 4.6.1 20110908 (Red Hat 4.6.1-9) > > Good (OpenJDK): > java version "1.6.0_22" > OpenJDK Runtime Environment (IcedTea6 1.10.5) (fedora-62.1.10.5.fc15-x86_64) > OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode) > > Good (Oracle) > java version "1.6.0_29" > Java(TM) SE Runtime Environment (build 1.6.0_29-b11) > Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02, mixed mode) > > GeoTools runs fine in a 64-bit environment. 64-bit Java benefits from > -XX:+UseCompressedOops to improve memory footprint. > > Kind regards, > Ben. > > > > On 15/02/12 13:09, Zheng Xudong wrote: > Hi all, > > Recently, I encountered an odd problem when I run my program using > GeoTools (v8.0-M4) on 64-bit Java environment, the output of the same program > with the same input will different on different computer and even different > running. Then I carefully debug my program and finally found the > org.geotools.geometry.jts.JTS.transform method on some 64-bit environment > will produce a little different result from the one on 32-bit environment. > The problem may be related to the computation accuracy. I found the problem > not happened on 64-bit Windows 7 and 64-bit Ubuntu, but happened on the > 64-bit RedHat Enterprise. > > I don't know the cause of the problem, and whether GeoTools could > running correctly on 64-bit environment. So I hope the developers would give > me some tips about that, and I suggest you to consider to design and test > GeoTools for 64-bit more. > > Thanks very much! > > -- > 郑旭东 > 北京航空航天大学计算机学院 > 软件开发环境国家重点实验室 > > Zheng Xudong > State Key Laboratory of Software Development Environment > School of Computer Science and Engineer, BeiHang University > > > > -- > Ben Caradoc-Davies<[email protected]> > Software Engineer > CSIRO Earth Science and Resource Engineering > Australian Resources Research Centre > > > > -- > 郑旭东 > 北京航空航天大学计算机学院 > 软件开发环境国家重点实验室 > > Zheng Xudong > State Key Laboratory of Software Development Environment > School of Computer Science and Engineer, BeiHang University > > -- Ben Caradoc-Davies <[email protected]> Software Engineer CSIRO Earth Science and Resource Engineering Australian Resources Research Centre ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ GeoTools-GT2-Users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
