*MIC* namespace "std::this_thread" has no member "sleep_for"
Hello,I am trying to offload some data onto the phi card and then I want my thread to sleep on the host for a few seconds but when I try to do so, I get the following error, the sleeping section is...
View ArticleClik here to view.
NWChem* for the Intel® Xeon Phi™ Coprocessor
PurposeThis code recipe describes how to get, build, and use the NWChem* code that includes support for the Intel® Xeon Phi™ Coprocessor with Intel® Many-Integrated Core (MIC)...
View Articlecalling _mm512_i32extgather_epi32 emits invalid upconv argument error
Hi, I've been working with Xeon Phi to get an optimal performance out of a simple, offloaded lookup -> return function. Below is the line that's causing problem:__m512i vec =...
View Articlecounting register spills
Hi all, is it possible to track the number of register spills into L1 and L2 cache with vtune?Is it possible to estimate if a specific part of the code has a lot of register spills by looking into the...
View ArticleMPI issues with 2 KNCs on a single host
Hi,I am testing my MPI application on 2 KNCs attached to the same host CPU. I observe a *strongly* fluctuating performance (by a factor of 10 or even more) --- for example between 10 and 160 Gflop/s...
View ArticleClik here to view.
Re-installing C++ Composer_XE for Linux
I previously installed C++ composer XE for Linux on RHEL 6.1. I mistakenly deleted the /opt/intel folder and I cannot source the path and I cannot remove or re-install the composer. I would like to...
View ArticleHow to visualize activity on the 60+ cores from a Xeon Phi coprocessor
I am pretty new on Intel Xeon Phi coding and would appreciate clarifications, really basic for most of you seniors on this topic.After ssh-ing to a Xeon Phi (mic0), I ran a "top". In order to check if...
View ArticleIntrinsic bad performance
Hi. I write aplication for Intel MIC witch doing stencil computation (5-point stencil) using 2D matrix. I would like to achieve good performance. I wrote code where 4 HW threads running on the same...
View ArticleStrange results on MIC
Hello, for my thesis I have run a simple code used to study a Lennard Jones system on a Xeon Phi coprocessor and I tried to vectorize it and study the variations on execution time. The machine I used...
View ArticleScif_send error??
Hello to you All, Strange message appeared when stoping the mpps service: (MPSS 3.3.1 in Centos 7)systemd: Stopping Intel(R) MPSS control service... Sep 23 10:21:18 localhost kernel: mic0: Transition...
View ArticleClik here to view.
Debugging Intel® Xeon Phi™ Applications on Linux* Host
ContentsIntroductionDebug Solution for Intel® MICHow to get it?Why use GNU* GDB provided by Intel?Why is Intel providing a Command Line and Eclipse* IDE Integration?Deprecation NoticeFeaturesRegister...
View ArticleClik here to view.
Debugging Intel® Xeon Phi™ Applications on Windows* Host
ContentsIntroductionDebug Solution for Intel® MICHow to get it?Debug Solution as IntegrationComponents RequiredConfigure & TestPrerequisite for DebuggingDebugging Applications with Offload...
View ArticleUnderstanding the corner cases of Vectorization Intensity
Correct performance analysis of an application is absolutely vital to optimize the performance on any architecture. A previous article describes several metrics recommended for a basic analysis of your...
View Articleoffload related
Hello,I had a conceptual question here, I have a program on the host that offloads data over to MIC; now, is it possible to have another program (completely separate) which is running on MIC that can...
View ArticleDo MKL FFT performs bad on xeonphi(MIC) compared to multicore - xeon server...
Hi,I have a written an application in which the same code is being on multi-core Xeon server CPU and Xeon phi 5110P(in offload mode). I noticed that when i use 512*512 size input array. i was getting...
View ArticleShutdownTimeout
Are there any negative ramifications of setting the ShutdownTimeout to 0 instead of a higher value such as 60 seconds? The documentation states thatSetting value to zero indicates to simply reset the...
View ArticleClik here to view.
Prominent features of the Intel® Manycore Platform Software Stack (Intel®...
The Intel® Manycore Platform Software Stack (Intel® MPSS) version 3.4 was released on September 22, 2014. This page lists the prominent features in this release.Intel® MPSSChanges to the uninstall...
View ArticleSMC inaccessible; Cannot get power or thermal readings
I am currently managing a CentOS host system with several Xeon Phi 5100P coprocessors. One of the coprocessors (mic0) is exhibiting issues with accessing the SMC buffers, making it difficult to (1)...
View ArticleDid anyone measure performance of offloaded FFTs on the MIC?
My initial experiments offloading FFTs into the MIC (using C language in Linux) give me approximately 9.3 GFLOPS of performance, judging by the reported [MIC Time] numbers when I set the environment...
View ArticleClik here to view.
Monitoring Intel® Xeon Phi™ Clusters Using Ganglia
Installing GangliaThe MPSS User's Guide will walk you through a basic Ganglia install. A few points you won't want to miss as you go through these instructions are:1) There are a number of additional...
View Article