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Subject: Re: [OMPI users] Slightly off topic: Ethernet and InfiniBand speed evolution
From: Pavel Shamis (Pasha) (pashash_at_[hidden])
Date: 2009-05-07 09:58:45


> The (low level verbs) latency has AFAIR changed only a few times:
>
> 1) started at 5-6us with PCI-X Infinihost3
> 2) dropped to 3-4us with PCI-express Infinihost3
> 3) dropped to ~1us with PCI-express ConnectX
>
I would like to add that on PCI-EX Gen2 platforms the latency is sub
micro (~0.8-0.95)
> Disclaimer: rough figures and only for Mellanox chips.
>
The same declaimer here.

Pasha
>
>> Regards
>>
>> Neeraj Chourasia
>>
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