IBM XL Fortran explained

XL Fortran is the name of IBM's proprietary optimizing Fortran compiler for IBM-supported environments, including Linux for little-endian distributions and AIX.

Features

• Tuning for Power ISA
• Fortran language standard support (XL Fortran's Fortran 2008 Compliance Status and XL Fortran's TS 29113 Compliance Status)
• CUDA Fortran support ^[1]
• OpenMP API support ^[2]
• Five optimization levels (-O0,-O2,-O3,-O4,-O5) ^[3]
• Profile-directed feedback optimization
• Interprocedural optimization and inlining
• High order transformations ^[4]

External links

• IBM Fortran Compilers family introduction
• Product documentation: XL Fortran for Linux, V16.1.1
• Product documentation: XL Fortran for AIX, V16.1.0
• Community: IBM XL C, C++, and Fortran Compilers for Power servers

Notes and References

1. Web site: Reference and limitations for CUDA Fortran support. IBM Knowledge Center. IBM. 30 Nov 2018.
2. Web site: Parallel programming with XL Fortran. IBM Knowledge Center. IBM. 30 Nov 2018.
3. Web site: -O. IBM Knowledge Center. IBM. 30 Nov 2018.
4. Web site: High-order transformation (HOT). IBM Knowledge Center. IBM. 30 Nov 2018.