[ofw] Which API to use for IB project

[Tzachi Dar]

Is your application on user mode or kernel mode?

Thanks
Tzachi 

> -----Original Message-----
> From: ofw-bounces at lists.openfabrics.org 
> [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of Thomas Peiselt
> Sent: Monday, August 03, 2009 3:22 PM
> To: ofw at lists.openfabrics.org
> Subject: [ofw] Which API to use for IB project
> 
> Hello,
> 
> I'm new to InfiniBand (and this list), and I'm not sure if 
> the topic is adequate on this list. If not, don't kill me, 
> show me the right way instead :-).
> 
> My task: given two shiny new workstations w/ Mellanox IB HCAs 
> (the cheap InfniHost  Lx cards), adapt the companies internal 
> communication library to work over IB - as seamless as 
> possible, as fast as possible... um yeah, you know, I guess .
> 
> I am lost in what a InfiniBand newbie might consider an API / library
> jungle: there's ND, WSD, SDP, IPoIB, uDAPL, and WinVerbs. I'm 
> not sure where to start. I understand that some APIs take 
> zero or almost zero porting effort (IPoIB, WSD), but do not 
> seem to take full advantage of all the IB features (zero 
> copy, cpu-bypass).
> 
> My question: what approach to chose for an application where 
> packet size is relatively small (less than 1024 bytes) with 
> the following
> priorities:
> 1. latency
> 2. cpu load
> 3. low porting effort to linux compute nodes 4. implementation effort
> 
> Latency is crucial, porting / implementation effort is just 
> nice to have.
> 
> thanks for any suggestions,
> 
> Thomas
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