[mvapich-discuss] mvapich 0.9.7 vapi driver + SilverStorm drivers

[Dhabaleswar Panda]

> > Are you trying the gen2 device or vapi device? If you are using the
> > vapi device, I hope you are using the ADAPTIVE_RDMA_FAST_PATH support
> > (not the SRQ support which is available with gen2 device only). We are
> > working on the SRQ support for vapi device and will be available soon.
> I use vapi device with ADAPTIVE_RDMA_FAST_PATH.

Thanks for this information.

>  > This discussion list has some members from SilverStrom. May I request
> > them to extend help on this and let us know why this error is coming
> > with the latest SilverStrom driver.
> > 
> > If some other users are using the same driver (3.2.0.0.25) driver from
> > Silverstorm with mvapich 0.9.7, may I request them to indicate whether
> > they are seeing this error or not.
> I have the same problem with the driver 3.0.0.2.2. Which is almost one
> year old. So, I guess, problem doesn't related exactly to the driver
> version.

We have successfully tested all mvapich versions with Mellanox's VAPI
stack (available with IBGD) and there are no problems. Many other
users are also running it in the same manner and they do not see this
problem.

If some VAPI functions and/or parameters are different in
Silverstorm's stack/driver, there could be some problem. As I
indicated in my earlier reply, we do not have access to this
stack. Silverstorm people should be able to extend help to you on
this.

> One more question, what is generally better, to stick to the vapi or to
> move to gen2?

Gen2 is emerging as a `vendor neutral' stack .... basically to avoid
the type of problem you are seeing. It is also gaining momentum in the
InfiniBand community. Thus, you may switch to it.

Thanks, 

DK

> 
> Best regards,
> 	Anton Starikov.
>