[GE users] Job submission speed through DRMAA api.

Daniel Templeton Dan.Templeton at Sun.COM
Thu Jan 20 12:51:03 GMT 2005


That's interesting.  I don't see why a mutex lock would be expensive 
when there's no contention...  Something else to look into when I have time.

Daniel

Fred L Youhanaie wrote:

> 
> Hi,
> 
> Here is something that I've noticed, in case it is helpful.
> 
> A few weeks ago I was playing with the DRMAA C API on my laptop and I 
> did notice a 2 second delay when running the simple init/exit example 
> from http://gridengine.sunsource.net/project/gridengine/howto/drmaa.html
> 
> When run via strace, most of the delay was in the two futex syscalls 
> called from drmaa_init. I have SGE 6.0u1, FC2, 2.6.9, no bdb, qmaster 
> and execd are all on the same host.
> 
> HTH
> 
> Cheers
> f.
> 
> 
> Kevin Ruland wrote:
> 
>>
>> All,
>>
>> My situation is a little more complex than I first let on. First I'm 
>> not using DRMAA directly, but rather through python swig wrappers.  So 
>> I need to figure out what I'm doing in there, recode in straight C and 
>> see if there is any significant difference.  So I don't have a nice 
>> test case yet.
>>
>> I also don't have hard numbers.  It's all a feeling now.
>>
>> Kevin
>>
>> Ron Chen wrote:
>>
>>> Kevin,
>>>
>>> Do you have a testcase?
> 
> 
> 
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