櫛田慶幸の日記@Wien

2021年12月24日金曜日

Invited talk

We were invited to a session of the 181th meeting of ASA.

https://www.researchgate.net/publication/356367868_High-performance_computing_for_long-range_underwater_acoustics

Guest Investigator @Woods Hole Oceanographic Institution

From this December, I am also a Guest Investigator at Woods Hole Oceanographic Institution.

I will work on HPC in underwater acoustics.

Hope I can provide some good achievements and make any feed-back to CTBT.

2021年10月26日火曜日

heFFTe

Installation of heFFTe with MKL on SPACK;

% spack install heffte%intel@2021.4.0+mkl ^intel-oneapi-mpi@2021.4.0 ^intel-mkl threads=openmp

To use installed Intel OneAPI and CMAKE on SPACK

In order to avoid multiple installations of Intel-OneAPI and CMAKE, we can use installed ones.
Please install Install OneAPI and CMAKE via APT and put the packages.yaml under ~/.spack/ whose contents are as follows;

$ cat ~/.spack/packages.yaml

packages:
   intel-oneapi-mkl:
      buildable: false
      externals:
      - spec: intel-oneapi-mkl@2021.4.0
        prefix: /opt/intel/oneapi/
   intel-oneapi-mpi:
      buildable: false
      externals:
      - spec: intel-oneapi-mpi@2021.4.0
        prefix: /opt/intel/oneapi/
   cmake:
      buildable: false
      externals:
      - spec: cmake@3.16.3
        prefix: /usr

buildable: false prevents us from installing packages via SPACK.

2021年10月14日木曜日

MPI/OpenMP hybrid with Intel MPI

mpirun -np 8 -genv OMP_NUM_THREADS=16 -hosts node2-ib,node3-ib,node4-ib,node5-ib -ppn 2 ./sol

To run an OpenMP/MPI hybrid code with IntelMPI, the above command is needed.

The meanings are;

8 MPI processes (-np 8),

16 OpenMP threads (-genv OMP_NUM_THREADS=16) ,

2 MPI processes per node (-ppn 2).

2021年9月22日水曜日

Reverse vertical (y) axis of Google spreadsheet graph

Although you don't expect it, plotting the below graph is a bit tricky on Google Spreadsheet, since the vertical axis goes from the largest to smallest as the bottom to top.

To do this, we need to change the "appearance" of the values in a column.

This can be achieved by applying, format -> number -> more formats -> custom formats on Google Spreadsheet, after you select a column of your spreadsheet.

For the above plot, I used "-0;0".