I just got interested and did a test myself. Comparing gcc 4.0 (-O2
-funroll-loops -D__NO_MATH_INLINES -ffast-math -march=pentium4
-mfpmath=sse -ftree-vectorize)
and icc 9.0 beta (-O3 -xW -ip):
gcc 4.0 icc 9.0
Composite Score: 543.65 609.20
FFT Mflops: 313.71 318.29
SOR Mflops: 441.96 426.32
MonteCarlo: Mflops: 105.68 71.20
Sparse matmult Mflops: 574.88 891.65
LU Mflops: 1282.00 1338.56which looks not too bad ;) Richard.
