[Beowulf] kernel tunning for HPC

Richard Miguel San Martín rmiguel at senamhi.gob.pe
Thu Dec 22 16:07:21 EST 2005


Hi Joe

Well, I have a numerical model for climate research, is a model with memory 
intensive use and i think that my problem is in the kernel parameters ..size 
memory perhaps, but im not sure how must change it. I have a gigabit ethernet 
network and the performance is fine. 
The design is a master node with a 6 slaves nodes, i dont have file systems 
on nfs because i have a external storage box fiber channel.

Thanks,

R. Miguel




On Thu, 22 Dec 2005 14:11:31 -0500, Joe Landman wrote
> Hi Richard:
> 
>    What type of workloads are running on the cluster, and more 
> importantly, why do are you tuning it?  That is, what specific issue 
> have you run into (poor performance or similar issues) that make you 
> wish to tune?
> 
>    Additionally, what is the design of your system?  Single head 
> node acting as a file server ?  Some other design?  What is your 
> network architecture?  What is the type and nature of the loads and 
> runs placed on the system?
> 
>    These would need to be answered before any reasonable tuning 
> effort were undertaken.
> 
> Joe
> 
> Richard Miguel San Martín wrote:
> > Hi all, 
> > 
> > I have a Red hat EL v3 system that i use as head node of a cluster, I 
want to 
> > do tunning of kernel for HPC. The question is how and what values i must 
> > change for to do it.
> > 
> > I was trying of change sysctl values but im not sure if that is ok. Where 
i 
> > can obtain information about that?.
> > 
> > Thanks in advance
> >  
> > 
> > Richard Miguel
> > _______________________________________________
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> 
> -- 
> Joseph Landman, Ph.D
> Founder and CEO
> Scalable Informatics LLC,
> email: landman at scalableinformatics.com
> web  : http://www.scalableinformatics.com
> phone: +1 734 786 8423
> fax  : +1 734 786 8452
> cell : +1 734 612 4615


------------------------------
Richard Miguel San Martin
Administrador de Sistemas
     CPN  - SENAMHI
Telf. 6141414 Anexo 464
Cel. 98540364
------------------------------

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