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Ioannis_P_
Beginner
90 Views

Opcode unsupported

Hello,

I have installed Intel Compiler 15.0.1.148 and MPSS 3.4.7 on Windows.

I try to compile my application natively for Xeon Phi (using /Qmic) but I get lots of errors like this:

C:/Program Files/Intel/MPSS//k1om-mpss-linux/usr/include/c++/iostream(75): (col. 25) error #13393: Opcode unsupported on target architecture: movdqa

Note: I get similar "Opcode unsupported" error when compiling on Linux for native Xeon Phi build (-mmic) using Intel Compiler 15 6th update and MPSS 3.7.

Any ideas how to solve this?

 

0 Kudos
4 Replies
Loc_N_Intel
Employee
90 Views

Hi,

It means the operation MOVDQA in the machine  language is not supported. Is it possible that you post your code and how do you compile it? Thanks.

Ioannis_P_
Beginner
90 Views

Hi and thanks,

the code is pretty big to show for this case but I can show something small that gives the same problem:

#include <float.h>

template <class T>
class limits
{
    public:
        static inline T Min() { return 0; }
        static inline T Max() { return 0; }
        static inline T Epsilon() { return 0; }
};

template <>
class limits<float>
{
    public:
        static inline float Min() { return FLT_MIN; }
        static inline float Max() { return FLT_MAX; }
        static inline float Epsilon() { return FLT_EPSILON; }
};

static const float PrecisionMax=limits<float>::Max();

 

I get the same Opcode unsupported error at the line that defines PrecisionMax.

The program is compiled with /Qmic & intel compiler.

Best wishes

Kevin_D_Intel
Employee
90 Views

I cannot reproduce this. I am not exactly aligned with your MPSS but given you reproduced this across Windows/Linux with different MPSS and compilers makes me think I should be able to reproduce this with combinations I have. On Windows under MPSS 3.5.37182.0, with PSXE 2015 Update 1, I cannot reproduce the error.

C:\u629126> icl /Qmic -c  u629126.cpp
Intel(R) C++ Intel(R) 64 Compiler XE for applications running on Intel(R) 64, Version 15.0.1.148 Build 20141023
Copyright (C) 1985-2014 Intel Corporation.  All rights reserved.

Can you show us the actual compile line or at least the compiler options used. Is anything more than /Qmic (-mmic) used?

Ioannis_P_
Beginner
90 Views

To be absolutely honest with you, I reduced the code to only a small part but didn't check whether there was still error emitted. I am actually glad that you couldn't reproduce it meaning that I must be doing something wrong on my side.

Let me test to see if I can find a small code sample that does not compile.

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