[openib-general] Should I use umad -or- osm

[Philip Mucci]

Hi Shahar,

Thanks for the info. 

My needs are very 'simple'. Just to send and receive MADS to the PM
agent on each adapter and switch in the network. 

Ideally, I would like this to work for existing installations based on
either OpenIB gen1 or Mellanox Gold. But I think for that, I need to use
the current osm_vendor_api.h interface.

How much will this interface change with gen2? will it export the same
functions? Or will everything change

Lastly, will I be able to send/recv these MADS as a non-root user?

Thanks again, and the answer to your question is, yes, I can wait.

Regards,

Philip


On Thu, 2004-12-09 at 17:52 +0200, shaharf wrote:
> Hi Philip,
> 
> 	I am currently implementing umad access library. It much simpler
> then the osm_vendor api. I would recommend using umad library and not
> osm. As a matter of fact the current osm vendor layer does not support
> openib gen2. I am working on that either. Both the umad access library
> and the new osm vendor layer that uses it are not finished yet. I guess
> that I will need at least another week to reach a point where I can
> release it. Even then it will change a lot until I will be finished with
> it.
> The question is can you wait a little? I can give you a preliminary
> version - but if you will use it you will have to modify your code
> several each time the library interface is changed.
> On the other hand, I would like to understand exactly what you need,
> because you are the first "client" of the user mode stuff beside me.
> 
> Shahar 
> 
> > -----Original Message-----
> > From: openib-general-bounces at openib.org [mailto:openib-general-
> > bounces at openib.org] On Behalf Of Philip Mucci
> > Sent: Thursday, December 09, 2004 3:25 PM
> > To: openib-general at openib.org
> > Subject: [openib-general] Should I use umad -or- osm
> > 
> > Hi folks,
> > 
> > I've been tasked with developing a rough performance tool for IB
> > networks. I've scanned the documentation and looks like the kind of
> data
> > we're interested in can be obtained from the Mellanox ASICs.
> > 
> > My question is a simple one:
> > 
> > I've got to send/recv mads to enable and obtain the performance
> counters
> > from a user space tool...ideally non-root, but we'll work with what we
> > have.
> > 
> > My current inclination has been to use the osm_vendor_api.h functions
> to
> > do this work. However, the late work here done by Hal on the UMAD
> access
> > layer seems to be appropriate as well.
> > 
> > Could someone elaborate on what you think the best (and most
> > maintainable) approach to accomplishing this task might be?
> > 
> > Regards,
> > 
> > Philip
> > 
> > 
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