[Beowulf] IBM LCM16 capacity

John McCulloch johnm at pcpcdirect.com
Sun Sep 8 09:20:55 PDT 2013

The console switch was a customer request, but we can recommend the management port remote KVM.


-----Original Message-----
From: Reuti [mailto:reuti at staff.uni-marburg.de] 
Sent: Sunday, September 08, 2013 6:13 AM
To: John McCulloch
Cc: 'beowulf at beowulf.org'
Subject: Re: [Beowulf] IBM LCM16 capacity

Am 07.09.2013 um 19:55 schrieb John McCulloch:

> Can anyone relate experience with implementing the IBM LCM16 KVM switch in a tiered configuration?  We are spec'ing approximately 500 node x86 cluster.
> Since you can daisy chain up to 16 servers per port, I would expect the supported maximum servers to be greater than 256 with two or three tiered LCM16 units.  Or does each port connect only one target system in a tiered configuration.
> The specs state only up to 256 target systems are supported in a tiered configuration.

I don't use these devices, just two thoughts:

For their GCM they list different limits: http://www.redbooks.ibm.com/abstracts/tips0772.html

Do the machines you buy have onboard remote KVM which you could use instead of the LCM/GCM?

-- Reuti

> http://www.redbooks.ibm.com/abstracts/tips0788.html
> Regards,
> John McCulloch
> PCPC Direct, Ltd. | Desk (713) 344-0923  |  Mobile (936) 641-0637
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> --Aristotle
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