I am attempting to compile gaussian03 and pgf77 (5.1-3 linux86-64) gives me the message:
“Loop not vectorized: not countable”
while when I compile the same source for the 32-bit arch it seems to vectorize fine. See details below:
" 9, Unrolling inner loop 4 times
Generated prefetch instructions for 2 loads and stores
vectorize 16 millisecs 100%
Total time 16 millisecs"
vs. (with linux86-64)
" 9, Loop not vectorized: not countable
Total time 0 millisecs"
Perhaps there is no real problem here, but it looks like there might be.