[libfabric-users] Trouble with scalable endpoint

[Biddiscombe, John A.]

Sean


I don't remember exactly what I did wrong, but I think when I created the scalable endpoint, I had the number of contexts requested 1 more than was supported - instead of getting an error when creating the endpoint (or binding the queues), I got an error when adding an address to the AV. When I switched the code to using the number of contexts equal to the number of threads I was actually using (not how many were supported) - the problem went away and I realized I had an error during creation (at least I think I remember that's what I did wrong). The error appearing at the AV insertion fooled me into looking in the wrong places for the problem. Anyway, it work now thanks.


JB


________________________________
From: Libfabric-users <libfabric-users-bounces at lists.openfabrics.org> on behalf of Hefty, Sean <sean.hefty at intel.com>
Sent: 27 September 2021 20:04
To: Biddiscombe, John A.; libfabric-users at lists.openfabrics.org
Subject: Re: [libfabric-users] Trouble with scalable endpoint

> I have been using one endpoint for Rx and another scalable one for Tx, so that each
> thread uses one context on send, but receives are shared, it works very well.
>
> I decided to benchmark using a scalable endpoint for Rx as well and so created a single
> scalable endpoint with N Tx contexts/CQs and N Rx contexts/CQs, bound an address vector
> to it - but when I insert an address into the address vector I get an invalid argument
> error.
>
> NB. I have set the AV to use the correct number of bits for Rx context count.
>
> I have no idea why it is unhappy. Are there any other differences I need to look out
> for that might trigger an invalid argument error?

No clue.  What provider is this?

- Sean
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