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
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? Thanks!
Sincerely Yours,
Lei Shi
-
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
Is there known issue with buffered sends in OpenMPI 1.1.4?
I changed a single send which is called thousands of times from
MPI_SEND (& MPI_ISEND) to MPI_BSEND (& MPI_IBSEND) and my Fortran 90
code slowed down by a factor of 10.
I've looked at several references and I can't see where I'm mak
