Optimierung

CentOS 7.2 + MLNX_OFED 3.1-1 + MPSS 3.6.1

I'm trying to get mpss running on our centOS 7.2 cluster.

We're using kernel 3.10.0-327.4.4.el7.x86_64.

MLNX_OFED_LINUX-3.1-1.0.3.1 (OFED-3.1-1.0.3).

On Mellanox Technologies MT27500 Family [ConnectX-3] adapters.

Installation of both MOFED and mpss run flawlessly, except when I try to use them together.

So I can install mpss. Setup ethernet networking. Ssh from/to xeon phi. Run code on xeon phi, all without a problem problem.

I can install Mellanox ofed, use infiniband (ON THE HOST),(ibv_*_pingpong ) without problems. 

simple_decode_vmem - GPU to CPU memory copy - ways to optimize

Hello All,

I profiled and found that copying memory from GPU to CPU is very expensive. I am looking for your inputs to alleviate this performance loss.

While the decoder using video memory gave a performance of 1653 FPS (here the output is not dealt after decoding), copying the decoder's output to system memory after decoding gave just 80FPS (in the simple_decode_vmem application). Such a fall it is, which leaves us with just 2 decodes per processor. I used MFX_GPUCOPY_ON but not to avail any performance benefits.

how to configure intel media sdk in android

posted for 

deepak k.

 

 

how to configure intel media sdk in android

Description

Hi sir very good Morning to you i have gone throughout the stack overflow that you are providing an api for video editing ,cutting etc. i have visited to your website but unable to find proper solution to configure intel media sdk in android studio. I have download the source code from Githup but while i open that code there are many errors due to jar files are missing even i am not able to find the jar file also. Kindly help me for both of these. 

Poor speed in MIC

Dear All:

As learning purpose, i tried to code a program which find total number prime number for a given range. isprime function finds  if a number is prime or not. I added !$omp declare simd to vectorize that function. I do not know why, program perform three times slower in intel phi than host.

Info:

Host: 16 sec

MIC: 43 sec

MODULEFILE creation the easy way

If you use Environment Modules  (from Sourceforge, SGI, Cray, etc) to setup and control your shell environment variables, we've created a new article on how to quickly and correctly create a modulefile.  The technique is fast and produces a correct modulefile for any Intel Developer Products tool.

The article is here:  https://software.intel.com/en-us/articles/using-environment-modules-with...

 

Rebuild ofed-driver-3.6.1-1.src.rpm MPSS installation issues

Hello,

Im installing MPSS 3.6.1 on two xeon phi nodes in a cluster connected to Infiniband, CentOS 6.6 and the kernel version is 2.6.32-504.8.1.el6.x86_64, so I update the kernel-headers and kernel-devel and rebuilt the MPSS host drives as the user guide says, and so far so good, but the problem comes when I tried to rebuild OFED drivers with rpmbuild --rebuild ofed-driver-3.6.1-.1.src.rpm,  I get the following error message:

[INDE Media for Mobile - android] Incorrect video orientation if using front camera with portrait activity

Hello,

I am currently using the SDK of Intel INDE Media for Mobile (https://github.com/INDExOS/media-for-mobile) in my Android application project.

It works fine in landscape after embedded in my android project. But, since my application requires to stream live video in portrait, I update the activity orientation to portrait. It works fine with the back camera. But when it switches to use the front camera, the live video streamed to server would be upside down.

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