Re: Regarding using UMR feature from. rdma-core API

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So that means if i use ibv_wr_send or ibv_post_send after
mlx5dv_wr_mr_list, then the send request will be posted with the UMR
feature?

On Mon, Feb 24, 2020 at 4:24 PM Umang Patel <umangsp.1199@xxxxxxxxx> wrote:
>
> Hello!
>
> As you said, I have already read the mlx5dv_wr_post() manual but I am
> still having trouble even after following the instructions given in
> it. I have created a normal client-server code for transferring some
> data from client to server using rdma. I am using the the rdma-core
> repo for the code. For posting the send request with the UMR feature,
> i use the function "mlx5dv_wr_mr_list" and to post the send request
> without UMR feature, i use the function "ibv_wr_send". The two
> functions that I mentioned are similar as mentioned in the manual. I
> have written my code in such a way that it asks whether or not to use
> the UMR feature and I have put an if else in the code which runs the
> function according to the user's answer whether or not to use the
> function and rest of the code is the does not change for with UMR and
> without UMR. However, I am unable to receive the data with
> mlx5dv_wr_mr_list function. Whereas, using ibv_wr_send, I am able to
> receive the correct data.
>
> Can you please look into it? Am I missing something in the code that i
> have to add for the UMR feature or the server side requires something
> else? what is the problem? I have attached the client-server code with
> this email.
>
> Thank You!



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