Ralph Castain <rhc_at_[hidden]> writes:
> On Apr 24, 2013, at 8:58 AM, Dave Love <d.love_at_[hidden]> wrote:
>> "Elken, Tom" <tom.elken_at_[hidden]> writes:
>>>> I have seen it recommended to use psm instead of openib for QLogic cards.
>>> Yes. PSM will perform better and be more stable when running OpenMPI
>>> than using verbs.
>> But unfortunately you won't be able to checkpoint.
> True - yet remember that OMPI no longer supports checkpoint/restart
> after the 1.6 series. Pending a new supporter coming along
As far as I can tell, lack of PSM checkpointing isn't specific to OMPI,
and I know people have resorted to verbs to get it.
Dropped CR is definitely reason not to use OMPI past 1.6. [By the way,
the release notes are confusing, saying that DMTCP is supported, but CR
is dropped.] I'd have hoped a vendor who needs to support CR would
contribute, but I suppose changes just become proprietary if they move
the base past 1.6 :-(.
For general information, what makes the CR support difficult to maintain
-- is it just a question of effort?