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AVX-512 _mm512_castsi256_si512

Anonymous18
Beginner
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Hello,

I am new in MIC programming

I am using AVX-512 registers. My code is:

__m256i s0 =  _mm256_set_epi8(
                        imageTemp((x-2),(y-1),11),imageTemp((x-2),(y-1),10),imageTemp((x-2),(y-1),9),imageTemp((x-2),(y-1),8)
                        ,imageTemp((x-2),(y-1),7),imageTemp((x-2),(y-1),6),imageTemp((x-2),(y-1),5),imageTemp((x-2),(y-1),4)
                        ,imageTemp((x-2),(y-1),3),imageTemp((x-2),(y-1),2),imageTemp((x-2),(y-1),1),imageTemp((x-2),(y-1),0)
                        ,imageTemp((x-2),(y-2),19),imageTemp((x-2),(y-2),18),imageTemp((x-2),(y-2),17),imageTemp((x-2),(y-2),16)
                        ,imageTemp((x-2),(y-2),15),imageTemp((x-2),(y-2),14),imageTemp((x-2),(y-2),13),imageTemp((x-2),(y-2),12)
                        ,imageTemp((x-2),(y-2),11),imageTemp((x-2),(y-2),10),imageTemp((x-2),(y-2),9),imageTemp((x-2),(y-2),8)
                        ,imageTemp((x-2),(y-2),7),imageTemp((x-2),(y-2),6),imageTemp((x-2),(y-2),5),imageTemp((x-2),(y-2),4)
                        ,imageTemp((x-2),(y-2),3),imageTemp((x-2),(y-2),2),imageTemp((x-2),(y-2),1),imageTemp((x-2),(y-2),0)
                        );

#pragma offload target(mic)
                        {                                
                                __m512i aux1 = _mm512_castsi256_si512(s0);
                        }

and i want to convert my variable s0(__m256i) to aux1(__m512i) .

I compile with:

icc my_smooth_opt_v128v2.c

AND I GET 2 ERRORS:

my_smooth_opt_v128v2.c(188): error: function "_mm512_castsi256_si512" called in offload region must have been declared with compatible "target" attribute
                  __m512i x1 = _mm512_castsi256_si512(a);     
                               ^

my_smooth_opt_v128v2.c(188): error: a value of type "int" cannot be used to initialize an entity of type "__m512i"
                  __m512i x1 = _mm512_castsi256_si512(a);

 

Thank you so much

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Loc_N_Intel
Employee
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Hi Lex,

Have you verified if that intrinsic is supported for Xeon Phi coprocessor (please refer to "Intel(R) Xeon Phi(TM) Coprocessor Instruction Set Architecture Reference Manual" https://software.intel.com/sites/default/files/forum/278102/327364001en.pdf)?

Thanks.

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