Random number generation has caused us many issues in MOOSE as well.
Long ago we bundled in a free platform independent random number
generator which resolved all of these issues.  I don't know if we'd
want to go those extremes in the libMesh library but it has worked
well for us.

Cody

Sent from my evil iPhone

On Dec 15, 2011, at 9:13 AM, Roy Stogner <[email protected]> wrote:

>
>
> On Thu, 15 Dec 2011, John Peterson wrote:
>
>> On Thu, Dec 15, 2011 at 7:35 AM, Roy Stogner <[email protected]> 
>> wrote:
>>>
>>> but I've no idea what causes the difference.
>>
>> Hmm... just a thought: the RB stuff uses some random number generation stuff.
>>
>> Perhaps this could explain different greedy parameter selection order
>> on different systems, but not outright failure?
>
> That could explain why we're triggering failure in some cases but not
> in others, though.
> ---
> Roy
>
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------------------------------------------------------------------------------
10 Tips for Better Server Consolidation
Server virtualization is being driven by many needs.  
But none more important than the need to reduce IT complexity 
while improving strategic productivity.  Learn More! 
http://www.accelacomm.com/jaw/sdnl/114/51507609/
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