Library linking problem when compiling the code for MIC cores in the host
I want to compile a code that aims to run natively in mic cores in the host. The code complies well and run correctly in the host. [hpc1]$ icc -no-multibyte-chars test_mic.c -o test_mic -lcrypto...
View ArticleHow to use scatter/gather operations on MIC
Hi,I want to use scatter/ gather operation on MIC. I could not find any example which shows the usage of these operations. I wrote one sample program which scatter an array. if comment...
View ArticleXeon Phi 3120A Fan Noise
Hi,I've got a 3120A in a workstation chassis and it runs on Windows fine. However when idling at temps of at 52-55C and drawing ~100W power, the fan seems to continually switch on for a few seconds...
View ArticlePhi Overclocking
Hi,we are designing the liquid cooling for Phi Coprocessor and I am thinking of overclocking of it. Normally it has 50 Celsium at maximum. Is there any way to increase it's speed to see the effect and...
View Articleconfiguration of external bridge network
Hi, all.I'm trying to configure external bridge network using examples from MPSS_Users_Guide.I want to access host CPU and MIC from other PCs at the same subnet network.Then, I wrote ifcfg-br0 file as...
View ArticleOffloading and TBB
I'm trying to offload with TBB and I'm having trouble building on windows. Looking at tbb\examples\parallel_reduce\primes, it appears that this example was written to demonstrate offloading to the MIC...
View ArticleUnable to run execs
We've just acquired a MIC and I'm doing some tests, unsuccessfully so far.I'm compiling the int_sin.f90 that's in the directory /opt/intel/composerxe/Samples/en_US/Fortran/optimize.This creates me the...
View ArticleFailed to build WRF for XeonPhi
Hi everyone, I'm trying to build WRF for Xeon Phi (option no.21 after running ./configure), however, I get the following errors when using ./compile wrf : x86_64-k1om-linux-ld: skipping incompatible...
View Articlecompile error
HiCould you please tell me how to resolve following compile errors? $ make mic icc -openmp -c sampleC01.c -o sampleC01.o icc: warning #10362: Environment configuration problem encountered. Please...
View ArticleBinding hyperthreads to the same core as MPI processes
I have an MPI application wherein I want to a have multithreaded section that can be utilized by hyperthreads.For example, suppose I have 4 MPI ranks running on 4 different cores on MIC. I want to...
View Articlequestion about "I_MPI_PIN_DOMAIN="
Dear mic forum,What I'd like to do is to split my 60-core coprocessor into 4 domains, pin one MPI process to each domain, and in each process let 60 threads be bound to 60 logical cores.I was reading...
View ArticleSwitching point between DAPL providers
This article by James Tullos explains how to use a list of DAPL providers in Intel MPI:http://software.intel.com/en-us/articles/using-multiple-dapl-providers-w...The first provider is used for small...
View ArticleRebuilding uOS bzimage
Hi,I'm trying to rebuild the bzimage of the uOS to gain some insight as to how the device works, in addition to the System Programmer's Guide. Unfortunately, I couldn't find any docs as to how to...
View Articleicpc compiler flag -inline-forceinline destroys correctness of Intrinsics kernel
Hey all, I have played a little bit with the compiler flags in the last days thereby I discovered that using inline functions involving the compiler flag -inline-forceinline can change the result of a...
View ArticleUsing MIC on Fedora 20
I am trying to understand how to implement the mpss-3.1.2 software for Fedora 20. I just want to use PHI in native mode on my local machine (DELL Precision T7610 host with dual-12 core xeon cpu's and...
View ArticleUse DAPL provider ofa-v2-mlx4_0-1 without an HCA
The DAPL provider ofa-v2-mlx4_0-1 gives much better short message latency for communication between Xeon Phi coprocessors within a single system than ofa-v2-scif0 (2-8 microseconds versus 15...
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Interesting performance graph
Hi!I am trying the example from chapter 4 of the "High Performance Programming for Intel Xeon Phi Coprocessors" book (lotsofcores.com). I am running the most optimized version of the program that the...
View ArticleUsing embree on CentOS 6.4
When I running "embree" in CnetOS6.4,there goes error message"libembree_xeonphi.so.2 COI_MISSING_DEPENDENCY". Is there any other way for me to debug?
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Internal Error: Bad Pointer
I'm attempting to compile the attached file with icpc -mmic -openmp offload.cpp. Unfortunately, I get the following error:offload.cpp(9): internal error: bad pointer #pragma omp target...
View ArticleA library routine in a shared function definition and shared array of pointers
Dear all, I have 2 questions while programming for MIC in the shared model offload mode. (1) If I define a _Cilk_shared function,inside which I used a routine in another library, for example, the...
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