[daip] Aips and LUSTRE network file system

[Wes Young]

I've managed to install AIPS on our cluster, but I don't think the  
lustre file system is mounted.  I've sent an inquiry to our lustre guy  
but haven't heard back yet. As soon as I know something I'll let you  
know.

wes
wyoung at aoc.nrao.edu



On Dec 5, 2007, at 7:39 AM, Nanni Mauro wrote:

> Hello Young
>
> I think that your Lustre guru have finisched  the holidays .  :-{{
> Can we restart the mail exchange on the Aips and Lustre ?
>
> Bye M.Nanni
>
>
> Wes Young ha scritto:
>> We haven't actually run AIPS at the AOC on the lustre file system,  
>> so we really don't know if it works or how well.
>>
>> wes
>> wyoung at aoc.nrao.edu
>>
>>
>>
>> On Nov 13, 2007, at 10:20 AM, Nanni Mauro wrote:
>>
>>> 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
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Daip mailing list
>>>>>>> Daip at listmgr.cv.nrao.edu
>>>>>>> http://listmgr.cv.nrao.edu/mailman/listinfo/daip
>>>>>
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