[Beowulf] kernel tunning for HPC
Richard Miguel San Martín
rmiguel at senamhi.gob.pe
Thu Dec 22 13:07:21 PST 2005
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.
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.
> 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
> > 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
> > 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
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Richard Miguel San Martin
Administrador de Sistemas
CPN - SENAMHI
Telf. 6141414 Anexo 464
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