AVX512 On Xeon Phi KNL using Intel Intrinsics

Hi,

I am a newbie to AVX512 Intrinsics, I tried this simple test code on Intel Xeon Phi 7210. I compiled using xMIC_AVX512.

I get an illegal instruction. This is the peice of code I am using

	__m512d src = _mm512_set1_pd(0.0); //passes successfully

	__m256i zerosInt = _mm256_set1_epi32(0);//passes successfully

	__m256i vIndex =  _mm256_set1_epi32(-1);//passes successfully

	int start = 0
	int end   = 16;
	int j;
	__m512d result_vector = _mm512_set1_pd(0.0); //passes successfully

	int rem = end - j;
	__mmask8 m = (rem > 8 ? 0xff : (0xff >> (8 - rem))); //passes successfully

	 printf("passed 3 mask = %d\n",  m);

	 __m512d valuesVector  = _mm512_mask_loadu_pd (src, m, &values[0]); //passes successfully

	 printf("passed 4\n");//This instruction fails :Illegal Instruction__m256i columnsVector = _mm256_mask_loadu_epi32 (zerosInt, m, &columns[0]); //FAILS !!

	  printf("passed 5\n");

Please help,

Thanks.