amd2021_flags AMD Compilers. Optimization, Compiler, and Other flags for use by SPEChpc

Compilers: AMD Fortran/C/C++

Operating systems: Linux

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The OpenMPI C++ driver configured for use with the AOMP C++ compiler (clang++).

]]> mpic++ The OpenMPI C++ driver configured for use with the AOMP C++ compiler (clang++).

]]> mpic++ The OpenMPI C driver configured for use with the AOMP C compiler (clang).

]]> mpicc The OpenMPI Fortran driver configured for use with the AOMP Fortran compiler (flang).

]]> mpif90 Disable warning messages.

]]> -w A basic block is generated for each C statement. No scheduling is done between statements. No global optimizations are performed.

]]> -O0 Level-one optimization specifies local optimization (-O1). ]]> -O1 Level-two optimization (-O2 or -O) specifies global optimization. ]]> -O2 All level 1 and 2 optimizations are performed. In addition, this level enables more aggressive code hoisting and scalar replacement optimizations that may or may not be profitable.

]]> -O3 -march=znver1 Specify that Clang should generate code for a specific processor family member and later. For example, if you specify -march=znver1, the compiler is allowed to generate instructions that are valid on AMD Zen processors, but which may not exist on earlier products.

]]> All level 1 and 2 optimizations are performed. In addition, this level enables more aggressive code hoisting and scalar replacement optimizations that may or may not be profitable.

]]> -Ofast Ofast enables all -O3 optimizations. It also enables optimizations that are not valid for all standard-compliant programs. In addition, this level enables more aggressive code hoisting and scalar replacement optimizations that may or may not be profitable.

]]> -O3 Generate output files in LLVM formats suitable for link time optimization.

]]> -O3 Enable OpenMP compilation for hpc2021.

]]> Enable OPENMP programming model for hpc2021.

]]> Enable OPENMP Target Offload programming model for hpc2021.

]]> macro at compilation stage to catastrophic error: "SEEK_SET is #defined but must not be for the C++ binding of MPI" when compiling C++ MPI application

]]> Enable using textual F90 include instead of modules for MPI in hpc2021.

]]> Select target to compile for.

]]> -targets=amdgcn-amd-amdhsa Select the openmp target to compile for.

]]> -Xopenmp-target=amdgcn-amd-amdhsa Select the specific target architecture to compile for.

]]> -march=gfx900 Select the specific target architecture to compile for.

]]> -mcpu=x86 AMD LibM is a software library containing a collection of basic math functions optimized for x86-64 processor-based machines. It provides many routines from the list of standard C99 math functions. Applications can link into AMD LibM library and invoke math functions instead of compiler's math functions for better accuracy and performance.

]]> -lflang Instructs the compiler to link with flang Fortran runtime libraries.

]]> Link with libjemalloc, a fast, arena-based memory allocator. Instructs the compiler to unroll the loops wherever possible.

]]> Do not warn about functions defined with a return type that defaults to "int" or which return something other than what they were declared to.

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