Yes. I think the blog post gives 10 excellent reasons why. :-)
> On Apr 3, 2015, at 2:40 AM, Lei Shi wrote:
>
> Hello,
>
> I want to use buffered sends. Read a blog said it is evil,
> http://blogs.cisco.com/performance/top-10-reasons-why-buffered-sends-are-evil
>
> Is it true or not? Thank
This problem is not related to Open MPI. Is related to the way you
use MPI. In fact there are 2 problems:
1. Buffered sends will copy the data into the attached buffer. In
your case, I think this only add one more memcpy operation to the
critical path, which might partially explain the imp
