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Model: IBM Power AC922 (Whiterspoon) Racks: 55 total (49 compute) |
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More technical details on this architecture can be found on the IBM RedBook series: https://www.redbooks.ibm.com/redpapers/pdfs/redp5494.pdfyou can find same of them in our repository or at the IBM site for redBooks (search for AC922).
Peak performance details
The peak performance of M100 (980 compute nodes + 8 login nodes) is about 32PFlops. The performance of the single node is 32 TFlops due to 0.8 for the CPU part and 7.8x4 for the four GPUs on the node. In the calculation of the peak performances we included also the login nodes since they are identical to compute nodes.
The theoretical peak performance is 988*(0,8+4*7,8) = 31,6 PFlop/s
In the below table you can find the single node theoretical peak performance of the AC992 CN node with two Power9 processors and four NVIdia V100 GPUs.
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Other flags are compiler specific and are described in the following:
XL Fortran compilerto be added...
-O0 Lower level of optimization, you can use also -O2
-g Produce debugging informationPORTLAND Group (PGI) Compilers
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The spectrum_mpi module provides the following compiler wrappers:
| compiler | wrapper | usage |
|---|---|---|
| xlc_r | mpixlc | Compile C source files with XL |
| xlC_r | mpixlC | Compile C++ source files with XL |
| xlf_r | mpixlf | Compile FORTRAN source files with XL |
| pgcc | mpipgicc | Compile C source files with PGI |
| pgc++ | mpipgic++ | Compile C++ source files with PGI |
| pgfortran | mpipgifort | Compile FORTRAN source files with PGI |
| gcc | mpicc | Compile C source files with GNU |
| g++ | mpic++ | Compile C++ source files with GNU |
| gfortran | mpif77 mpif90 mpifort oshfort shmemfort | Compile FORTRAN source files with GNU |
Detailed documentation can be found in the original IBM website.
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The openmpi module provides the following wrappers:
| compiler | wrapper | Usage |
|---|---|---|
| gcc | mpicc opalcc ortecc oshcc shmemcc | Compile C source files with GNU |
| g++ | mpic++ | Compile C++ source files with GNU |
| gfortran | mpif77 | Compile FORTRAN source files with GNU |
Scientific libraries
ESSL: Engineering and Scientific Subroutine Library by IBM
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