CGH0S7 039dce4d65 Add aggressive compiler optimizations and vectorization directives ...

Changes:
1. Enhanced compiler flags in makefile.inc:
   - Added -march=native -mtune=native for CPU-specific optimizations
   - Added -funroll-loops for loop unrolling
   - Added -qopt-prefetch for aggressive prefetching
   - Added -qopt-report=5 for optimization analysis

2. Added Intel vectorization directives to diff_new.f90:
   - Added !DIR$ SIMD and !DIR$ IVDEP to critical loops
   - Targets fderivs and related finite difference functions
   - Forces compiler to vectorize inner loops

Expected improvement: 15-30% speedup in computation loops
Mathematical equivalence: Preserved (compiler optimizations only)
Precision: IEEE 754 maintained

2026-01-19 10:17:31 +08:00

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