[evla-sw-discuss] Java 7 on EVLA

[Barry Clark]

If the rest of the world is going to java 7, I think Executor
should also.

Executor currently executes from /user/local/java.  If we wanted
to stay with java 6, we could simply change the launch script to
use  /user/local/java/jdk1.6.0_31.

Once sysadmins decide what java 7, making a java7 symlink would
simplify managing the switch for Executor, independently of the
change for general usage.

Note that there are two parts to the change - the JVM, which
matters for Executor, and the java compiler, which probably
doesn't.  I'm inclined to let the chips fall where they may for
the latter.  We would have time to notice between the general
changeover and our next update if it actually does matter.

On 10/24/2012 01:11 PM, James Robnett wrote:
>
> This does not apply to cmibs.  Their OS is frozen unless you
> need a change.
>
> The testing is solely to ensure that the default Java on
> Windows/Redhat/OSX doesn't preclude running EVLA screens.
>
> Things like the executor that explicitly exec Java can run
> whatever version they want.  We're not removing versions of
> Java we're changing the default which is what people get when
> launching things via javaws.
>
> james
>
> On 10/24/2012 01:02 PM, Bruce Rowen wrote:
>>
>> On Oct 24, 2012, at 12:47 PM, Kevin Ryan<kryan at nrao.edu>   wrote:
>>
>>>
>>>
>>> The other issue that may arise is with the CMIBs; I believe they
>>> are running the same version of Linux as the other servers in the
>>> system so, theoretically, they should be able to handle Java 7 -
>>> unless it uses significantly more resources (memory/cpu power).  We
>>> will start testing Java 7 on CMIBs next week.
>>>
>>> Kevin
>>
>> CMIBs are running Red Hat 4. Current "java" tasks  consume about 11%
>> of the memory and 1% of the CPU while idle.
>>
>> -Bruce
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>
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