loop is not vectorized

Hi,

I am experimenting with the auto vectorization functionality of Intel compiler. However, the following loop cannot be vectorized.

for (k=0; k < nz; k++) {

for (j=0; j < ny; j++) {

#pragma ivdep

for (i=0; i < nx; i++) {

ptr = i + j*nx + k*nx*ny;

p[ptr] = 1.0f + 0.1*drand48();

q[ptr] = 1.0f + 0.1*drand48();

}

}

}

In the program, both p and q are float arrays. The message I got for the loop from using -vec-report3 is: