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
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