_mm256_add_ps crashes program

Hello ,

I am using in my code something like:

int x , y;

float * TempD = (float*) _mm_malloc( N * sizeof(*TempD) ,64 );
__m256  * SIMDTempD = (__m256*) TempD;
__m256  * theX = (__m256*) X;
__m256  * theY = (__m256*) Y;
__m256i * theV = (__m256i*) V;
__m256i * theVoronoi = (__m256i*) Vor;

__m256 Xd ,Yd ,XdSquared ,YdSquared;


and then in a loop:

Illegal instruction using _mm512

Hello ,

I am using in my code intrinsics.

If I compile like:

icc -std=c99 -g -openmp -qopt-report=2 -o mycode mycode.c

I am receiving : Illegal instruction in line:

__m512 D = _mm512_set1_ps( FLT_MAX );


If I compile :

icc -std=c99 -g -mavx -openmp -qopt-report=2 -o mycode mycode.c

I am receiving: Illegal instruction in line:

Unknown header type 7f

I'm running RHEL 7.0 and I the system seems to have a problem talking to the Phi card.

This is what I see in lspci:

03:00.0 Co-processor: Intel Corporation Xeon Phi coprocessor 5100 series (rev ff) (prog-if ff)

        !!! Unknown header type 7f

        Kernel driver in use: mic


I've attached the micdebug log.

Passwordless SSH install for Intel® Parallel Studio XE Cluster Edition

I have established secure shell (SSH) connectivity on my cluster where each node has a public key. However, when I use any secure shell utility on the cluster, I am still prompted for a password. What am I doing wrong?

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  • Fortran
  • Intel® MPI Benchmarks
  • Intel® Trace-Analyzer und -Collector
  • Intel® MPI Library
  • Intel® Parallel Studio XE Cluster Edition
  • Message Passing Interface
  • Cluster-Computing
  • Intel Omni-Path Webinar

    The upcoming next-generation Intel Omni-Path Architecture addresses lessons learned, good and bad, from Intel True Scale Architecture and standard InfiniBand*. In an effort to avoid observed pitfalls, Intel approached the architecture of an HPC fabric from a different perspective. The architectures for current products and Intel Omni-Path systems were explicitly developed from the ground up for MPI HPC clusters to bring out the best possible performance.

    Trouble with Updating MPSS

    My server has 4x Intel Xeon Phi 5110P accelerator cards. it runs Centos 6.5 with kernel version 2.6.32-431.29.2.el6.x86_64

    When updating MPSS from 2.1 to 3.3.4 and 3.4.3, I receive the following error:

    [root@XXXXX mpss-3.3.4]# /usr/bin/micflash -update -device all -smcbootloader
    Error getting SCIF driver version
    failed to open mic'0': /sys/class/mic/mic0/family: Knights Corner: not supported: Operation canceled

    failed to open mic'1': /sys/class/mic/mic1/family: Knights Corner: not supported: Operation canceled

    MPSS 3.5

    Please note that the new MPSS 3.5 is just released at


    This new version supports the following OS:


    - Linux: RHEL* 6.4, 6.5, 6.6, 7.0 and 7.1 & SuSE SLES* 11 SP3 and SuSE 12.

    - Microsoft Windows*: Windows* 7 Enterprise SP1, 8/8.1 Enterprise, Server 2008 R2 SP1, Server 2012 and Server 2012 R2.


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