topic Hi and thanks, in Software Archive

Opcode unsupported

Ioannis_P_ — Thu, 05 May 2016 09:10:23 GMT

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?

Hi,

Loc_N_Intel — Wed, 11 May 2016 20:54:41 GMT

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.

Hi and thanks,

Ioannis_P_ — Thu, 12 May 2016 12:53:48 GMT

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

I cannot reproduce this. I am

Kevin_D_Intel — Thu, 12 May 2016 16:58:24 GMT

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?

To be absolutely honest with

Ioannis_P_ — Thu, 12 May 2016 17:23:51 GMT

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.