Error occurred during initialization of VM
Could not reserve enough space for 3072000KB object heap
You need to increase the maximum heap size of the JVM.
Try:
java -Xmx4g ... Note:
- You will also need to make sure you have a 64bit version of the JVM installed.
OutOfMemoryException
Most Java virtual machines only allocate a certain maximum amount of memory to run Java programs. Usually this is much less than the amount of RAM in your computer. However, you can extend the memory available for the virtual machine by setting appropriate options. With Sun's JDK, for example, you can use
java -Xmx512m ...to set the maximum Java heap size to 512MB. You can use
-Xmx2gto set it to 2GB.For more information about these options, follow this link.
Note:
Do not use the
-Xmsparameter as well, as this will lead quickly to an OutOfMemoryException.If you are using WEKA under Windows and start WEKA from the Start Menu, check out the Invocation section of the Java Virtual Machine article, it explains what files you have to edit in order to give WEKA more memory (RunWEKA.bat or RunWEKA.ini, depending on your version).
But please have in mind, that your hardware architecture and/or operating system will limit the amount of memory you can allocate (see the 32-bit and 64-bit sections of the Java Virtual Machine article).
Source OutOfMemoryException
Can I check how much memory is available for WEKA?
You can easily check, how much memory WEKA can use (this depends on the maximum heap size the Java Virtual Machine was started with).
- developer version
- start the SimpleCLI
- run the following command:
- java weka.core.SystemInfo
- the property memory.max lists the maximum amount of memory available to WEKA
- book version (and developer version)
- start the Explorer
- right-click in the log panel
- select Memory information to output the information to the log
In case you should run into an OutOfMemoryException, you will have to increase the maximum heap size. How much you can allocate, depends heavily on the operating system and the underlying hardware (see sections 32-Bit and 64-Bit of the Java Virtual Machine article). Also, have a look at the OutOfMemoryException section further down.
Source Can I check how much memory is available for WEKA?