[ofiwg] libverbs static vs. dynamic linkage issue for CentOS 7.6

[Anthony Skjellum]

Jeff, I agree that it belongs there.  Sorry. I will go join that list and
try again.
Regards,
Tony


On Mon, Jun 3, 2019 at 9:41 AM Jeff Squyres (jsquyres) via ofiwg <
ofiwg at lists.openfabrics.org> wrote:

> Tony --
>
> While your issue sounds generic in nature, did you mean to send this issue
> to the libfabric mailing list (vs. the libibverbs / rdma-core mailing list)?
>
>
>
> > On Jun 1, 2019, at 7:45 PM, Anthony Skjellum <skjellum at gmail.com> wrote:
> >
> > Hi,
> >
> > I am having truly weird experiences as follows
> >
> > 1) My library, when statically linked, works fine with libverbs
> > 2) My library, when dynamically linked, provides unpredictable errors
> with libverbs
> > 3) My test programs, in main(), dynamically linked with libverbs, work OK
> >
> > This has been reproduced in several Centos 7.6 InfiniBand networks.
> >
> > I have done extensive debugging; as more and more functions move into
> main(), my program runs further.  Typically, I either segmentation violate
> inside libverbs ibv_ calls, or I get errno=9 in my library, depending on
> how much code has moved into the statically compiled main or library.
> >
> > All my code runs fine with a dynamically built main, a statically built
> library (my product), and -libverbs dynamically linking.
> >
> > Is there any known set of conditions that produces such a situation with
> recent libverbs?
> >
> > Any specific things to look out for with readelf that would indicate
> that libfabrics is not going to link properly with a dynamic library?
> >
> > I've read extensively on inter-dll dependencies and proper linking.
> What's the best practice according to the developers of this library ? :-)
> >
> > Thank you,
> > Tony Skjellum
> >
> >
> > --
> > Anthony Skjellum, PhD
> > skjellum at gmail.com
> > Cell: +1-205-807-4968
> >
> >
> > _______________________________________________
> > ofiwg mailing list
> > ofiwg at lists.openfabrics.org
> > https://lists.openfabrics.org/mailman/listinfo/ofiwg
>
>
> --
> Jeff Squyres
> jsquyres at cisco.com
>
> _______________________________________________
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> ofiwg at lists.openfabrics.org
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>


-- 
Tony Skjellum, PhD
RunTime Computing Solutions, LLC
tony at runtimecomputing.com
direct: +1-423-713-9337
cell: +1-205-807-4968
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