Running Grobid on Windows 64 bit

I am trying to execute GROBID on a 64-bit Windows.

There is no x64 bit version of the library for Windows (Atleast I could not find). It runs on 64 bit Linux with 64 bit JRE and on 32 bit Windows with 32 bit JRE. So the version of JRE is not the problem.

I understand I need to include the 64-bit Windows - libcrfpp file. However I cannot find it. Can you please let me know where can I find it or help me execute it?

However I get an errors as follows -

Error when trying to run it using a 64 bit JVM on Windows 64 -

Exception in thread "main" java.lang.ExceptionInInitializerError
        at org.grobid.core.main.GrobidParser.<clinit>(GrobidParser.java:22)
        at org.pushpin.main.Main.main(Main.java:138)
   Caused by: java.lang.RuntimeException: Unable to find a native CRF++ library: Folder <FOLDER>\GROBID_HOME\.\lib\win-64 does not exist
        at org.grobid.core.main.LibraryLoader.load(LibraryLoader.java:21)
        at org.grobid.core.impl.GrobidFactoryImpl.init(GrobidFactoryImpl.java:35)
        at org.grobid.core.impl.GrobidFactoryImpl.newInstance(GrobidFactoryImpl.java:22)
        at org.grobid.core.impl.GrobidFactoryImpl.instance(GrobidFactoryImpl.java:14)
        at org.grobid.core.GrobidFactory.<clinit>(GrobidFactory.java:13)
        ... 2 more

UPDATE Error when trying to run it using a 32 bit JVM on Windows 64 -

Caused by: java.io.IOException: Cannot run program "<project path i have removed it>\lib/pdftoxml": CreateProcess error=193, %1 is not a valid Win32 application
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
at java.lang.Runtime.exec(Runtime.java:615)
at java.lang.Runtime.exec(Runtime.java:448)
at java.lang.Runtime.exec(Runtime.java:345)
at org.grobid.core.document.Document.pdf2xml(Document.java:217)
at org.grobid.core.engines.HeaderParser.processing(HeaderParser.java:86)

Solution

It is not possible to load a 32-bit native library from a 64-bit JVM.

Using a 32 bit dll on a 64 bit machine

But you can install a 32-bit JVM on your 64-bit Windows and run a Java application which uses a 32-bit native library.

UPDATE:

This is a excerpt of the application launcher

private static String getLibraryFolder() {
    String osPart = System.getProperty("os.name").replace(" ", "").toLowerCase().substring(0, 3);
    String archPart = System.getProperty("sun.arch.data.model");
    //todo: change to fetching the basic dir from GrobidProperties object
    return String.format("%s/%s-%s", GrobidProperties.getInstance().getNativeLibraryPath().getAbsolutePath(),
            osPart, archPart);
}

The application is checking property sun.arch.data.model to get the native library folder. If you use a 32-bit JVM in a 64-bit Windows, you get

java.home=C:\Program Files (x86)\Java\jre7
os.arch=x86
os.name=Windows 7
sun.arch.data.model=32

So executing the application with a 32-bit JRE would load the native libraries from <FOLDER>\GROBID_HOME\.\lib\win-32

UPDATE: The error you get when using 32-bit JRE has nothing to do with JVM architecture. You should install and configure your pdf2xml correctly.