[mvapich-discuss] MVAPICH2 2.3rc2 XRC bug fix details

[Liwei Peng]

Thanks Hari for the quick response.

A new more questions:
1) Can you share some details on how MVAPICH2's XRC feature used on IB?
2) Our purpose is to reduce queue pair connections on large-scale cluster
environment. Besides XRC/DCT, what other technologies can we leverage?

Thanks,

Liwei



On Tue, May 1, 2018 at 10:17 AM, Subramoni, Hari <subramoni.1 at osu.edu>
wrote:

> Hi, Liwei.
>
>
>
> This is different from the issue that was reported on mvapich-discuss a
> few days ago. We are still trying to investigate whether this combination
> is expected to work. We will get back to you soon with more details.
>
>
>
> Thx,
>
> Hari.
>
>
>
> *From:* mvapich-discuss-bounces at cse.ohio-state.edu *On Behalf Of *Liwei
> Peng
> *Sent:* Tuesday, May 1, 2018 12:09 PM
> *To:* mvapich-discuss at cse.ohio-state.edu <mvapich-discuss at mailman.cse.
> ohio-state.edu>
> *Subject:* [mvapich-discuss] MVAPICH2 2.3rc2 XRC bug fix details
>
>
>
> Hi Mvapich expert,
>
>
>
> I am evaluating the latest MVAPICH2 2.3rc2 release. From the changelog, it
> has a bug fix " Fix issue with XRC connection establishment". Can you
> provide more details on this bug fix?
>
>
>
> When I used MVAPICH2 2.3 rc1 on Mellanox ConnectX4 RoCE last week, I found
> XRC will cause MPI to hang. Is the bug fix related to this issue?
>
>
>
> Thanks,
>
>
>
> Liwei
>
>
>
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