On 07/18/2011 07:47 AM, Kevin Van Maren wrote:
> While MPI can achieve 3.2GB/s data rates, I have never seen o2ib lnet
> get that high. As I recall,
> something ~2.5 is more typical.
I saw ~3GB/s with lnet-selftest on QDR quite recently. One run was
reporting ~3.1GB/s.
Chris
Tim Carlson wrote:
> On Fri, 15 Jul 2011, Theodore Omtzigt wrote:
>
>
>> To me it looks very disappointing as we can get 3GB/s from the RAID
>> controller aggregating a collection of raw SAS drives on the OSTs, and
>> we should be able to get a peak of -5GB/s from QDR IB.
>>
>> First question: i
On Fri, 15 Jul 2011, Theodore Omtzigt wrote:
> To me it looks very disappointing as we can get 3GB/s from the RAID
> controller aggregating a collection of raw SAS drives on the OSTs, and
> we should be able to get a peak of -5GB/s from QDR IB.
>
> First question: is this baseline reasonable?
For
I got a basic Lustre cluster up and running and did two experiments:
1- using GbE as the interconnect
2- using QDR IB as interconnect
Here are the simple performance results I collected using the pointers
from the Lustre user guide:
[root@22-82 ~]# ost-survey /mnt/lustre01
/usr/bin/ost-survey:
