[Beowulf] GPFS on Linux (x86)
gil at dev.mellanox.co.il
Thu Sep 14 09:14:56 PDT 2006
Scott Atchley wrote:
> On Sep 11, 2006, at 10:14 PM, Brent Franks wrote:
>> We have been researching GPFS from IBM and are very interested in what
>> looks like promising performance and scalability.
>> Does anyone use GPFS, we are looking at running it in a distributed
>> mode, rather than using one central SAN.
>> Additionally, the sales information seems to be rather elusive. We
>> have contacted IBM, however the channels we contact have all been
>> somewhat dissapointing as we have had to educate the sales people on
>> what the product is.
>> We are very interested in setting up a trial of the software and then
>> purchasing if it meets our needs. Does anyone have a contact at IBM
>> or solutions provider who is familiar with GPFS and could send out an
>> eval kit? 30 or 60 day time bomb would be fine, we just need to
>> justify to management that it will indeed work for our application.
>> Any help would be greatly appreciated.
>> Thanks and kindest regards,
>> - Brent
> Hi Brent,
> You do not mention what interconnect (protocol or advertised
> throughput) that you are considering. If you are considering gigabit
> Ethernet, you can skip the rest of this message.
> If, however, you are considering something faster than gigabit
> Ethernet, bear in mind that GPFS only can use TCP (as far as I know).
> You will be limited to the performance of the TCP on your
> interconnect. If you are using TCP/IP/Ethernet, then expect a very
> high CPU load. If you are considering an IB solution, look closely at
> their IPoIB results.
Luster File System (open source from CFS) support native InfiniBand,
delivering higher performance with low CPU utilization.
> Some filesystems can take advantage of the underlying (non-Ethernet)
> fabric to achieve higher throughput and lower CPU usage.
> Scott Atchley
> Myricom Inc.
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