Xeon Phi Cilk Offload: problem with libraries
I try to use Cilk_offload on host + Xeon Phi. example.cpp:#pragma offload_attribute (push, _Cilk_shared) #include <vector> #include <string> #include "offload.h" #pragma...
View Articledirect and control signals in Bus Unit
Dear CommunityVery kindly pleasant about information about direct and control signals in Bus Unit .
View ArticleComputing Double/Float
Hello, I'm doing some financial computations (Monte Carlo, massively parralel algorithm) in a benchmark case and I wanted to analyze the potential difference of time computation between the use of...
View ArticleXeon Phi 31S1P on S1200BTSR
Hi Guys, I'm trying to use an Xeon Phi 31S1P on a Intel System Board S1200BTSR. First thing is: the seller told me this system board is a S1200BTS with the BIOS updated, so I took my S1200BTS and...
View ArticlePerformance issue with multi-rail support in Intel MPI 5.0
Hi,I am experiencing a severy performance loss when using multiple rails in Intel MPI 5.0 and the KNC and an mlx5 adapter (which has 2 ports). With Intel MPI 4.1 it was much better.Let me give an...
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 ArticleVTUNE and native Phi analysis and libiomp5.so oh my!
I had some problems with VTUNE native analysis and using LD_LIBRARY_PATH to find libraries on the Phi.I was trying to use VTUNE to analyze a native application. Having copied my executable and...
View ArticleClik here to view.
Why are the percent of the first core user always below 100%?
Hello there: I have found an interesting appearance which I can not explain. Okey, let's go. I apply "micsmc" to surveiling the offload running state of MIC. The critical code like...
View ArticleOffload from dynamically loaded library ?
Hello,I am new to programming for the Xeon Phi, and am having trouble getting explicit offload to work when the offload is done in a dynamically loaded library. The code fails at run time at the...
View ArticleHow to do dot product in KNC efficiently?
In SSE 4.1 we can use _mm_dp_ps. How about in KNC?Thank!
View ArticleOffload static library problem (error 20)
Hi,I'm having trouble running some offload code. The code compiled fine and appeared to execute until it needed some functions that were defined as MIC only and threw the following error:[Offload]...
View ArticlePerformance: offload vs native mode and Fortran module
Hi,System: Centos 7.0, compiler: parallel_studio_xe_2015, MPSS 3.4.2.I have Fortran code, when I compile in native mode. The running time is about 2.4 (seconds). When I compile in offload the running...
View ArticleClik here to view.
scif_connect fails
Hi FolksI am currently writing a simple program with the SCIF API.My current goal is it to allocate a buffer on the Host node, send it over to the MIC and send it back. Sounds pretty simple but I am...
View ArticleMPSS latest build, 3.4.2 source, does not compile
I tried doing a Make on the linux driver module, linux-2.6.38+mpss3.4.2, and I get an error message, that intel_i2c.c, does not...
View ArticleOverlay is not integrated into initrd (MPSS 3.4.2)
Hello,I just upgrade to the MPSS 3.4.2 and since filelists are not supported anymore for the base initrd, I tried the overlay feature with a filelist. However, I quickly realized that the files I...
View ArticleFortran Calling C Offloaded Function
Hi Guys, I would like to know if it is possible to do a code like this:!dir$ offload begin target (mic:0)call C_SUBROUTINE(x, y)!dir$ end offloadWhere the subroutine code is:__attribute__...
View ArticleXeon Phi stops working after a while
I am running SUSE 3.0.76-0.11-default. I installed the RPM's with zypper, which seemed to load fine. The flash command did not work:/usr/bin/micflash -update -device all -smcbootloaderthere was some...
View ArticleSCIF data transfer
Hi, I want to send data using RMA function of SCIF.Register is success. But do not write to remote memory.strerror (errno) output "No such device or address" message is displayed.Below is a simple...
View ArticleICC non-commercial development
I am doing research on neural networks, and plan to port this to the Xeon Phi. This work is not commercial. I noticed that Intel has a web page for getting tools for non-commercial...
View Article