Intel Xeon Phi - IBM Flex x240


I joint the HPC Code Modernization Workshop held in Stockholm on June 3'rd 2015.

At the workshop we were offered an Intel software/hardware bundle including "Intel Parallel Studio XE Cluster Edition and 1 Intel Xeon Phi 5150P".

My development environment is a IBM Flex x240  computer node with 2 Intel(R) Xeon(R) CPU E5-2643 0 @ 3.30GHz CPU's and 256 GB RAM.

In order to install the Intel Xeon Phi 5110P, I need to by a Flex System PCIe Expansion Node, but I am a bit unsure if the offered Xeon Phi processor can be installed.

MPSS 3.5.1 and Scientific Linux 7.1


I have MPSS 3.5.1 and I would like to install it on Scientific Linux 7.1.

Scientific Linux 7.1 - is based on RHE 7.1 and has the same kernel: Linux ys03 3.10.0-229.el7.x86_64 #1 SMP Mon Mar 9 16:14:50 CDT 2015 x86_64 x86_64 x86_64 GNU/Linux

Unfortunatelly  I didn't find any ofed modules in main package for this kernel:

Xeon Phi - Error in installation

When installing the mpss-3.5.1 on CentOS 7 (kernel 3.10.0-229.el7.x86_64), I got an error when issue " micctrl --initdefaults" as below:

[Error] micrasrelmond: [Parse] START_WITH_SECURITY=false invalid config parameter

[Warning] micrasrelmond: Generating compatibility network config file /opt/intel/mic/filesystem/micrasrelmond/etc/sysconfig/network/ifcfg-mic0 for IDB.

monitoring MIC with micmgmt API

I am trying to develop a dstat plugin to monitor the MIC usage. To do this I would like to use the python binding to micmgmt but I am not sure to understand exactly what is returned by the API.

Could someone explain how I can use the value returned by mic_get_idle_sum() to get the percentage of total idle time for example ?
I suppose I have to transform it with the total number of thread and probably with  mic_get_jiffy_counter() or may be mic_get_tick_count() ?




Fortran module containing interfaces only - offload programming

What is the way to write a Fortran source file that contains only one module and that only has interface declarations to routines that are callable as either host or offload.

I tried:

module foo
    subroutine foobar
    !dir$ attributes offload : mic ::foobar
    end subroutine foobar
  end interface
end module foo

When I subsequently USE foo elsewhere, I found I must still add:

!dir$ attributes offload : mic :: foobar

In the routine that performs the call

I'm back DPD200361383

I am building a Fortran .DLL that contains offloads to MIC.

In the project there is a module containing interfaces to non-exported subroutines and functions. mod_interfaces.f90 defining module mod_interfaces, with interfaces only.

One of the examples are

    subroutine games_check(crames)
    !DIR$ ATTRIBUTES OFFLOAD : mic :: games_check
        use dyn_array_crames
        implicit none
        type(CRAMES_t) :: crames
    end subroutine games_check

That is in the interface file. The source file containing the subroutine has:

Memory retention on Xeon Phi in OpenMP 4.0


some time ago, memory retention between offloads on Xeon Phi in OpenMP 4.0 was supported only within a lexically structured scope  ( https://software.intel.com/en-us/forums/topic/520644#comment-1796781 )

Have things changed as of Parallel Studio 2015? Can we offload data from one function and re-use from another?



31S1P: BSOD or Device Connection Lost

31S1P: BSOD or Device Connection Lost


There are some kind of instabilities with my Xeon Phi 31s1p. With or WITHOUT(!) a job on the coprocessor there are events like

june 16 2015 21:02:31: Warning: mic0: Device connection lost!
june 16 2015 21:03:47: Information: mic0: Device connection restored


With an OpenCL job the situation gets worse: it may loose connection or raise blue screen of death :) IRQL_LESS_OR_EQUAL in some MPSS dll (I will take a screenshot later).

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