[Swift-devel] java installations on Beagle

[Michael Wilde]

Hi Lorenzo,

Just a few notes re your java emails (sorry, we are all swamped right now with multiple colliding deadlines).

- should never need to set JAVA_HOME manually; in fact is usually dangerous to do set. Java will set it to the dir containing the command you run.  Just get the right java bin/ in your path).

- we are still experimenting with which Java works best on Beagle, so I am cc'ing this to swift-devel for comments. I recall that Ketan found some issues with the default IBM Java that were remedied by using a Sun Java.

- *usually* its best to use the latest Sun Java available.

- I am assuming for Beagle (and most modern machines) we aways want to use a 64 bit Java

Mike


----- Original Message -----
> From: "Lorenzo Pesce" <lpesce at uchicago.edu>
> To: "Michael Wilde" <wilde at mcs.anl.gov>
> Sent: Tuesday, May 1, 2012 10:30:18 AM
> Subject: java installations on Beagle
> Mike,
> 
> No rush here. It looks like there is some mess in the java
> installations on Beagle. For one there are a bunch:
> lpesce at login5:~> module avail java
> 
> ------------------------------- /opt/modulefiles
> -------------------------------
> java/jdk1.6.0_20 java/jdk1.6.0_24(default)
> lpesce at login5:~> module avail sun-java
> 
> --------------------------- /soft/modulefiles/tools
> ----------------------------
> sun-java/jdk1.7.0_02(default)
> 
> 
> I thought that the module called "java" was the sun java. Now I a
> utterly perplexed.
> 
> 
> Moreover, $JAVA_HOME doesn't seem to be affected by which java is
> loaded, which seems dubious to me.
> 
> I am going to force a new definition of JAVA_HOME *within* the ant
> module when I load sun-java

-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory