[daip] Aips and LUSTRE network file system

[Nanni Mauro]

Thank you for the help.
If you use lustre at AOC I think that this works well with Aips ... an 
this  is a good news.
I am making tests and I can wait for  end of November..

Bye M.Nanni 

Wes Young ha scritto:
> Well I'm afraid our lustre guy didn't know anything about locking, so 
> we'll have to investigate it ourselves.  We have a cluster at the AOC 
> with the lustre system on it, unfortunately due to other commitments 
> and US holidays it could be as much as two weeks before we might have 
> anything sensible to say. If you haven't heard back from us by the 
> 27th you should email us again. Apologies for the delay.
>
> wes
> wyoung at aoc.nrao.edu
>
>
>
> On Nov 12, 2007, at 11:24 AM, Nanni Mauro wrote:
>
>> NO.  I download the kernel and modules in rpm binary format.
>>
>> I can have made  someting   of wrong in the configuration , because
>> that  is the first time  that I install Lustre, but I do not know what.
>>
>> I am searching news about this file system that is wery efficient for a
>> cluster ( where  the loking  must be present because we have concurrent
>> task that works  on the same file ) but phereps is not a "standard
>> locking".
>>
>> Thank you
>> M.Nanni
>>
>> Wes Young ha scritto:
>>> Did you build the lustre filesystem yourself? Did you enable locking?
>>>
>>> wes
>>> wyoung at aoc.nrao.edu
>>>
>>>
>>>
>>> On Nov 12, 2007, at 10:29 AM, Eric Greisen wrote:
>>>
>>>> There are 2 things that I see:
>>>>
>>>> 1. File locking is not implemented for your file system. This is
>>>> particularly bad for aisp disk 1.
>>>>
>>>> 2. When the lock business is ignored ("non-atomic" file creation), the
>>>> attempt to fill small files with 0's in ZCREAT also fails to fill the
>>>> requested number of 0s.  Since aips only uses the most basic I/O
>>>> calls, e.g. open, read/write, close I think there must be several
>>>> further things missing from your operating system.
>>>>
>>>> Eric Greisen
>>>>
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