Problem with Scatter/Gather operations

Hi, i am vectorizing some code using the MIC intrinsics. But i am getting segmentation fault on MIC (offload error: process on the device 0 was terminated by signal 11 (SIGSEGV) ). Some one please tell me where am i doing mistake. It seems like a simple error. but i am stuck here.

Normal code:

for(curIdx = 0; curIdx < index; curIdx++)

          {

          outreal[cidxarray[curIdx]] += inrealvalue*valuearray[curIdx];

          }

Vectorized code:

int remain = index %16;

int indexSize = index-remain;

v1 = _mm512_set1_ps(inrealvalue);

     

for(int curIdx = 0; curIdx < indexSize; curIdx = curIdx+16)

 {

      v1i = _mm512_load_epi32(cidxarray+curIdx);

      v2 = _mm512_load_ps((void*)(valuearray+curIdx));

      

      v3 = _mm512_mul_ps(v1,v2);                                                   // doing inrealvalue*valuearray[curIdx];

      v4 = _mm512_i32gather_ps(v1i,(void*)outreal,sizeof(float));      // access values from outreal and store in v4;

      v5 = _mm512_add_ps(v3,v4);                                             // doing outreal[cidxarray[curIdx]] += inrealvalue*valuearray[curIdx] and stores in v5

      _mm512_i32scatter_ps((void*)outreal,v1i,v5,sizeof(float));     // storing it back into outreal array

}

    for(curIdx = indexSize; curIdx < index; curIdx++)

          {

          outreal[cidxarray[curIdx]] += inrealvalue*valuearray[curIdx];

          } 

Thanks

sivaramakrishna