Versionen im Vergleich

Schlüssel

  • Diese Zeile wurde hinzugefügt.
  • Diese Zeile wurde entfernt.
  • Formatierung wurde geändert.

...

Codeblock
titleOpenMP simultaneously hyperthreading
collapsetrue
#SBATCH --nodes=2
#SBATCH --partition=standard96:test
module load impi/2019.5
export SLURM_CPU_BIND=none
export OMP_PROC_BIND=spread
export OMP_NUM_THREADS=96
mpirun -ppn 2 \
       -np 1 ./code1.bin : -np 1 ./code2.bin : -np 1 ./code3.bin : -np 1 ./code4.bin

...

Compiler flags

To make full use of the vectorizing capabilities of the Intel Cascade Lake CPUs, AVX512 AVX-512 instructions and the 512bit 512-bit ZMM registers can be used with the following compile flags with of the Intel compilers:

-xCORE-AVX512 -qopt-zmm-usage=high

However, high ZMM register usage is not recommended in all cases (read moreImage Removed).

With the GNU compilers (GCC 7.x and later), architecture-specific optimization for Skylake and Cascade Lake CPUs is enabled with, the corresponding compiler flags are

-march=skylake-avx512cascadelake -mprefer-vector-width=512

Using the Intel MKL

The Intel® Math Kernel Library (Intel® MKL) is designed to run on multiple processors and operating systems. It is also compatible with several compilers and third party libraries, and provides different interfaces to the functionality. To support these different environments, tools, and interfaces, Intel MKL provides multiple libraries from which to choose.

Check out the link below Intel's link line advisor to see what libraries are recommended for a particular use case. https://software.intel.com/en-us/articles/intel-mkl-link-line-advisor/Image Removed