Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

Subject: Re: [OMPI devel] openib max_cqe
From: Shamis, Pavel (shamisp_at_[hidden])
Date: 2012-07-05 15:53:52

> So if I do a run of -np 2 across two separate node than the use of the max_cqe of my ib device (4194303) is ok. Once I go beyond 1 process on the node I start getting the memlocked limits message. So how much memory does a cqe take? Is it 1k by any chance? I ask this because the machine I am running on has 4GB of memory and so I am wondering if I just don't have enough backing memory and if that is so I am wondering how commone of a case this may be?

I mentioned on the call that for Mellanox devices (+OFA verbs) this resource is really cheap. Do you run mellanox hca + OFA verbs ?