Arquitetura Intel® Many Integrated Core

Xeon Phi 31S1P 270W vs 300W

Hi,

System: Ubuntu 14.03, MPSS 3.4.1, 31S1P

When I run micinfo it display "Product 300W Passive CS" instead of 270W as product description. Is it a "feature" or a bug?

  Thanks,

 

System Info
        HOST OS            : Linux
        OS Version        : 3.13.0-44-generic
        Driver Version        : 3.4.2-1
        MPSS Version        : NotAvailable
        Host Physical Memory    : 264047 MB

Device No: 0, Device Name: mic0

error while loading shared libraries libmpifort.so.12 on MIC

Hi,

I was trying to run my executable natively on MIC but obtained the following error:

[wzhang80@xpacc-serv-03-mic0 plascomcm]$ ./bin/plascomcm.mic 
./bin/plascomcm.mic: error while loading shared libraries: libmpifort.so.12: cannot open shared object file: No such file or directory

I realized that the runtime libraries should be copied to the MIC cards. I did that and added the location of the library to the PATH:

Trouble installing MPSS on Ubuntu 12.04 - mic driver not loaded

Posting this question from a customer who noted an article:

 

Comment by Riazuddin K.:

Hello! I am trying to install "mpss-3.3.3" in my Ubuntu 12.04.5 LTS (GNU/Linux 3.13.0-37-generic x86_64) system. I tried several methods, avialable online but at the end this is what i get:

$ miccheck
MicCheck 3.3.3-r1
Copyright 2013 Intel Corporation All Rights Reserved

Intel MKL linpack benchmark gets killed on Xeon Phi

Hi all,

I've got a weird problem: I wanted to test the GLOPS performance of the Xeon Phi's that are entrusted to me: 2 x Xeon Phi 5110P, 1x Xeon Phi 7120 . I read that the linpack benchmark is included in Intel's MKL libs and that a Xeon Phi version is included. So I grabbed the binaries and ran them on my Xeon Phi's.

On the 7120 (with mpss 3.3.2) the benchmark runs fine:

double precision vs. single precision and vector alignment on MIC

Hello everyone, I have a subroutine that serves as the force calculation in an n-body simulation shown below. There a couple of arrays that I will describe which will hopefully make the subroutine a little more clear.

1. array position. it contains positions of particles and atom types. it is of length number of particles np

double precision vs. single precision and vector alignment on MIC

Hello everyone, I have a subroutine that serves as the force calculation in an n-body simulation shown below. There a couple of arrays that I will describe which will hopefully make the subroutine a little more clear.

1. array position. it contains positions of particles and atom types. it is of length number of particles np

Bitonic Sorting

Demonstrates how to implement an efficient sorting routine with the OpenCL™ technology that operates on arbitrary input array of integer values. The sample uses properties of bitonic sequence and principles of sorting networks and enables efficient SIMD-style parallelism through OpenCL vector data types. The code is designed to work well on modern CPUs.
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  • shared library load issue

    Hi,

    I'm trying to run an executable in mic. I built it in a host with the following command: 

    icpc -mmic -std=c++0x main.cpp.

    The code uses _Cilk_spawn and _Cilk_sync functions. When I copied the executable to the mic, and tried to run it, saw following error: 

    ./a.out: error while loading shared libraries: libcilkrts.so.5: cannot open shared object file: No such file or directory

    I set LD_LIBRARY_PATH env variable:

    Special Promotion for ANSYS Customers: Intel® Xeon Phi™ Coprocessors

    Special Promotion for ANSYS Customers: Intel® Xeon Phi™ Coprocessors

    ANSYS* and Intel worked closely together to deliver up to 2.2x (1) higher performance, for ANSYS Mechanical* R16.0,  by optimizing the application code for the multi-core Intel® Xeon® processor E5-2600 v2 and v3 families and the many-core Intel® Xeon Phi™ coprocessor. The combination offers tremendous performance potential for structural mechanics simulations, at relatively low cost and without altering the end-user experience or complicating the IT environment.

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  • Poor Performance with function calls

    Hello Everyone,

    i am doing a small test on Xeon Phi that calculates "pi" with "Calculate Pi Using an Infinite Series", see http://www.wikihow.com/Calculate-Pi . In my inplementation a small function is called in each iteration, i.e. lots of function calls.  This function is declared for target. It suprises me why my program is so slowly. 

    And after I have inlined this function, it works much better, about 20 times...

    I know function calls are expensive, however so expensive couldn't be.

    Best Regards,

    Bo

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