[yt-users] yt on kraken

[Britton Smith]

This problem is often independent of the load on whatever node you're on.
It's more affected by the load being placed on the filesystem, which I
don't think there's a way to measure. When the lustre system is being hit
hard, it won't matter if you're on a login node or a compute node.
On Feb 22, 2012 5:53 PM, "Geoffrey So" <gsiisg at gmail.com> wrote:

> Yeah interactive is the way to go if you don't want to fight over system
> resources or hog the login node, problem is sometimes it takes a long time
> for interactive session to even start.
>
> Glad it worked for you :-)
>
> From
> G.S.
>
> On Wed, Feb 22, 2012 at 2:47 PM, Nathan Goldbaum <goldbaum at ucolick.org>wrote:
>
>> Hi Geoffrey,
>>
>> I ended up starting an interactive job on a compute node.  The import
>> still took about 10 minutes.  It finally did finish importing though.
>>
>>   Nathan Goldbaum
>> Graduate Student
>> Astronomy & Astrophysics, UCSC
>> goldbaum at ucolick.org
>> http://www.ucolick.org/~goldbaum
>>
>> On Feb 22, 2012, at 2:45 PM, Geoffrey So wrote:
>>
>> I would recommend if possible getting an interactive node to try yt on.
>>  I've seen many users abuse the login node of Kraken, running multiple
>> jobs, and sometimes it's multiple users at the same time that slows the
>> node down.  Have you tried another login node of Kraken, since there's 11
>> to choose from.
>>
>> If I do >top and see many jobs running I usually just switch,
>>
>> ssh -Y krakenpf1
>>
>> you can do this all the way to krakenpf11
>>
>> From
>> G.S.
>>
>> On Wed, Feb 22, 2012 at 2:35 PM, Britton Smith <brittonsmith at gmail.com>wrote:
>>
>>> Hi Nathan,
>>>
>>> That's on the high side a little, but, sadly, not the maximum I've ever
>>> waited.
>>>
>>> Britton
>>>
>>>
>>> On Wed, Feb 22, 2012 at 5:33 PM, Nathan Goldbaum <goldbaum at ucolick.org>wrote:
>>>
>>>> Hi Britton,
>>>>
>>>> Thanks for the suggestion.  I've been waiting for more than 10 minutes
>>>> now and it still hasn't finished the import - does that seem excessive?
>>>>
>>>>   Nathan Goldbaum
>>>> Graduate Student
>>>> Astronomy & Astrophysics, UCSC
>>>> goldbaum at ucolick.org
>>>> http://www.ucolick.org/~goldbaum
>>>>
>>>> On Feb 22, 2012, at 2:19 PM, Britton Smith wrote:
>>>>
>>>> Hi Nathan,
>>>>
>>>> It's most likely not hanging, but working on the import.  The
>>>> filesystem on Kraken can be incredibly slow at times.  If you're only
>>>> waiting a minute or so, you will probably need to give it a bit longer.
>>>>
>>>> Britton
>>>>
>>>> On Wed, Feb 22, 2012 at 5:15 PM, Nathan Goldbaum <goldbaum at ucolick.org>wrote:
>>>>
>>>>> Hi all,
>>>>>
>>>>> I'm trying to run yt on a login node on kraken.  All I'm doing is
>>>>> invoking python from the command line and importing yt.  However, python
>>>>> hangs on 'from yt.mods import *'.
>>>>>
>>>>> The python interpreter also takes a very long time (~ a minute or so)
>>>>> to start from the command line.
>>>>>
>>>>> This happens using both the yt/dev and yt/2.3 module.
>>>>>
>>>>> Anyone have any ideas?
>>>>>
>>>>> Nathan Goldbaum
>>>>> Graduate Student
>>>>> Astronomy & Astrophysics, UCSC
>>>>> goldbaum at ucolick.org
>>>>> http://www.ucolick.org/~goldbaum
>>>>>
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