Thanks Ziliang, I understand that JVM
needs -Xmx100m (for example), but the documentation says that it is the
name of the parameter:
JAVA_MAXHEAP_ARGUMENT
An incomplete command line argument to the Java interpreter (the Java
Virtual Machine) to specify the switch name for the Maxheap Argument.
Condor uses it to construct the maximum heap size for the Java Virtual
Machine. For example, the value for the Sun JVM is -Xmx.
(An incomplete command line argument... specify the switch name for the
Maxheap Argument... Condor uses it to construct the maximum heap size...
the value for the Sun JVM is -Xmx (and not -Xmx<value>m) ).
In linux machines, it works as stated
in the documentation. So, or the documentation is incorrect or condor at
each platform interprets this parameter diferently.
I started sending this message to show
that there is an inconsistency and thus a correction must be made.
Regards,
Klaus
Ziliang Guo <ziliang@xxxxxxxxxxx> Sent by: condor-users-bounces@xxxxxxxxxxx
31/03/2011 14:53
Please respond to
Condor-Users Mail List <condor-users@xxxxxxxxxxx>
Klaus: The -Xmx parameter needs to have a value
after it, like -Xmx100m or something, to be a valid parameter to the JVM.
The Windows config file has just -Xmx in the JAVA_MAXHEAP_ARGUMENT config
knob and not a value after it. That could potentially cause problems
as the code does not seem to actually check if there is a numerical value
after -Xmx. We probably should set a default. The -classpath
parameter may also be an issue but I have not looked into it.
Michael: I'm not quite sure what the source of your problem
is, though there are a couple caveats one has to keep in mind with respect
to paths and 32bit vs 64bit. First, Condor does not work with spaces
in paths, period. In the installer, if the installer is able to find
java.exe, it will convert that path into a short path, something like C:\PROGA~2\java\jre6\bin\java.exe.
If you manually specified the path, especially if it was a path to the
default location Java6 has been installed to, it likely has a space, which
results in Condor not being able to find java.exe. Second, because
the installer is a 32bit application, on 64bit systems that have Java 64bit
installed, Windows actually can lie and claim that Java is installed in
the "Program Files (x86)" directory instead of the regular "Program
Files" directory. There is supposed to be a check to make sure
the file given by a path exists before it gets written into the config
file by the installer, but due to Windows' lying, the check may actually
pass. Finally, I have no idea what "copy the java installation
to an NTFS" means.
On Thu, Mar 31, 2011 at 9:32 AM, Michael O'Donnell <odonnellm@xxxxxxxx>
wrote:
Klaus,
I would be interested in hearing from the condor listsvr on this topic
as
well. I am currently using 7.5.6, but I have not been able to configure
java correctly since version 7.2.x. I have posted questions about this
and
there has been many questions about setting up java for windows, but none
of these have worked.
The solution I have used is to copy the java installation to an NTFS and
then I can run jobs requiring java using this. Obviously, this is less
than ideal but because I could not figure out the configuration it has
allowed me to run jobs via java.
I cannot find my notes on this, but I have also read on java blogs that
the location for where java.exe is installed has changed with different
versions. For example, I think some apps will copy the java.exe to the
system32 folder because I do not think the java installation does this
any
longer. Therefore, I have had a difficult time trying to automate the
configuration when specifying the JAVA config macro.
I am testing Condor 7.5.6 on Windows machine and am getting the folloqing
error message:
03/31/11 09:56:30 Locale: English_United States.1252
03/31/11 09:56:30 JavaDetect: failure status 1 when executing
C:\WINDOWS\SysWOW64\JAVA.exe -Xmx -classpath
C:/condor/bin;C:/condor/bin/scimark2lib.jar;. CondorJavaInfo old 2
JAVA_MAXHEAP_ARGUMENT is set to -Xmx in accordance with the definition
of
it on the documentation:
JAVA_MAXHEAP_ARGUMENT
An incomplete command line argument to the Java interpreter (the Java
Virtual Machine) to specify the switch name for the Maxheap Argument.
Condor uses it to construct the maximum heap size for the Java Virtual
Machine. For example, the value for the Sun JVM is -Xmx.
On Linux machines it works accordingly.
When I set to -Xmx1024M, for exemple, the error doe not occur.
Seams to be a problem of interpreting that parameter in Windows version
of
Condor.
Am I correct?
Thanks,
Klaus
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