Gonçalo Borges ha scritto:
> Hi Alessandro
>
>>> 2./ What's the correct value for GlueSubClusterLogicalCPUs?
>>>
>>> I've set it up to 904 (the total number of cores) but since we have
>>> sufficient memory per core, we allow some overbooking, and I wonder
>>> if I should publish the total number of slots (allowed jobs) instead...
>> if each of your WN has 8 core, 226*8=1808 is the right number; but,
>> if I've well understood your case, if on some WN the overbooking
>> makes to see to the O.S. more "computing units", you should take them
>> into account in the "LogicalCPU number"
>
> Just to clarify, in my case, each WN has 8 cores distributed in 2
> quadcore CPUS. So, the total number of Logical CPUS should be 226 (2
> quadcore CPUS per WN) * 4 (4 cores per quadcore CPU) = 904. On top of
> that, I should apply the overbooking factor.
sorry, you are right, I don't know why I've doubled the numbers (maybe
the hunger :-)
I should have done 113*8 and not 226*8 :P
cheers,
Alessandro
>
>
>>>
>>> 3./ I've set up "GlueHostProcessorOtherDescription:
>>> Cores=8,Benchmark=54.90-HEP-SPEC06". I assume that the benchmark
>>> value should be published by server (and not by core), and that the
>>> number of cores is the total number of cores per server, and not per
>>> CPU as stated in the docs (which in my case would be 4 since each
>>> host has 2 quadcore cpus). Is my assumption right?
>> actually you should publish "Cores=4,Benchmark=54.90-HEP-SPEC06",
>> because 4 is the number of cores per cpu on the typical WN
>
> After Gonzalo comment, I realized that the Benchmark value should be
> per core.
>
> Thanks in Advance
> Cheers
> Goncalo
--
Dr. Alessandro Paolini
INFN - CNAF
Viale Berti Pichat 6/2
40127 Bologna
Italy
tel: +39 051 6092723
fax: +39 051 6092916
ICQ: 192172027
skype: alex.paolini
**********************
"credo nel potere del riso e delle lacrime"
"come antidoto all'odio ed al terrore"
"un giorno senza un sorriso"
"è un giorno perso" >>> Charlie Chaplin
