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MPI Bi-band shows MPI cannot exploit full duplex transmission mode

I am running performance benchmark with C++, Intel MPI and CentOS 7.

I use two types of benchmarks:

Authored by seongyun k. Last updated on 01/16/2017 - 16:46
Forum topic

MPI Performance issue on bi-directional communication

Hi,

(I attached the performance measurement program written in C++)

I am experiencing performance issue during bi-directional MPI_Send/MPI_Recv operations.

Authored by seongyun k. Last updated on 01/16/2017 - 06:00
Forum topic

Knights Landing(KNL) Thread Affinity and Managing Hyper Threading

Hi,

Authored by Rakesh M. Last updated on 01/16/2017 - 01:16
Forum topic

Performance of Half Precision Floats on KNL

Hi

I want to use half precision floats on Knights Landing. However, I find the half-floats really have very poor performance. Does anyone know the reason?

Authored by Zhen J. Last updated on 01/13/2017 - 13:23
Forum topic

MPI 5.0 Runtime Environment silent uninstall

Hello,

Authored by Tim B. Last updated on 01/13/2017 - 08:05
Forum topic

Difference Performance Datatype dependency

Hi all and thanks to help,

I write in Fortran a stupid program that implements a dot product between two arrays , one in double precision and the other changing the datatype.

Authored by eric p. Last updated on 01/13/2017 - 02:21
Video

Respect Programming Models – Manage Intel® Xeon Phi™ in your Clusters for Enhanced User Experience

High performance computing (HPC) cluster programming model number 1 has been MPI for the past 10 or more years.

Authored by admin Last updated on 01/12/2017 - 16:13
Video

Fast, lightweight, scalable MPI performance analysis

Developers of modern high performance computing (HPC) applications face a challenge when scaling out their hybrid (MPI/OpenMP*) applications.

Authored by admin Last updated on 01/12/2017 - 16:11
Blog post

Neutron Quality of Service in OpenStack

Quality of Service (QoS) refers to the overall performance of a network and is used in telephony and computer networks to describe the customer’s experience with the network.

Authored by David S. (Intel) Last updated on 01/12/2017 - 12:01
Forum topic

Error: 'pmovmskb' is not supported on 'k1om'

Hi All.

I compiled code use ICC for mic, get error message. 

What is the mean? 

 

Error: 'pmovmskb' is not supported on 'k1om'

Authored by yu, frank Last updated on 01/11/2017 - 01:27
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