[mvapich-discuss] MCAST feature

[Hari Subramoni]

Hi Vu,

Yes - this support is still available in MVAPICH2. It is enabled by default
at configure time if the system has the necessary driver level support
(i.e. IB umad libraries). You can enable it at runtime using environment
variables.

Please refer to the following section of the user guide for more information

http://mvapich.cse.ohio-state.edu/static/media/mvapich/mvapich2-2.3a-userguide.html#x1-660006.8

Please let us know if you run into any issues with it.

Thx,
Hari.

On Sun, Jul 23, 2017 at 4:12 PM, Hoang-Vu Dang <dang.hvu at gmail.com> wrote:

> Hi,
>
> I would like to test the hardware multicast feature of Inifniband. Is it
> still available inside MVAPICH2 ? If yes, is there any relevant environment
> variable ? anything to look for ?
>
> For example: how to enable/disable, threshold for performance tuning ? If
> I choose RC, is the mode available etc..
>
> Thanks,
> Vu
>
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