FluTAS for ISC23 SCC (Onsite)

Owned by David Jaekyu Cho
Last updated: May 16, 2023 by Ophir Maor
3 min read

 

Overview

FluTAS (Fluid Transport Accelerated Solver) is an open-source code targeting multiphase fluid dynamics simulations. The key feature of FluTAS is the ability to efficiently run both on many-CPUs and many-GPUs in a single and unified framework.
This framework is also designed to be modular so that it can be extended in a sustainable manner.

 

Presentation

Here are the introduction presentation:

 

Slides:

Downloading and compiling FluTAS

  • Download the application:

git clone https://github.com/Multiphysics-Flow-Solvers/FluTAS.git

Sample build script:

cd FluTAS/src # Edit FC name and FFTW path in targets/target.generic-intel. # MPI=intelmpi-2021.7.0 MPI=hpcx/2.15.0 if [[ "$MPI" =~ ^intel ]]; then module load intel/2022.1.0 module load fftw/3.3.10-impi export I_MPI_F90=ifort elif [[ "$MPI" =~ ^openmpi ]]; then module load fftw/3.3.10-ompi export OMPI_MPIF90=ifort fi module load $(echo $MPI | sed -e "s/\-/\//") make ARCH=generic-intel APP=two_phase_ht DO_DBG=0 DO_POSTPROC=0

Running Example

Before you start, make sure to change the process grid in dns.in:

The example below will work with 256cores (16x16):

$cd FluTAS/examples/two_phase_ht/coarse_two_layer_rb $ grep dims dns.in 16 16 ! dims(1:2)

 

Example:

 

/usr/bin/time mpirun -np 256 $MPIFLAGS flutas the used processor grid is 16 by 16 Padded ALLTOALL optimisation on ************************************************ *** Beginning of simulation (TWO-PHASE mode) *** ************************************************ *** Initial condition succesfully set *** dtmax = 3.322388020223433E-003 dt = 1.661194010111717E-003 *** Calculation loop starts now *** ... *** Fim *** OUT:initial : 6.335s ( 1 calls) STEP : 14.630s ( 1000 calls) VOF : 9.309s ( 1000 calls) RK : 0.545s ( 1000 calls) SOLVER : 1.264s ( 1000 calls) CORREC : 0.588s ( 1000 calls) POSTPROC : 0.117s ( 1000 calls) OUT:iout0d : 0.005s ( 2 calls) OUT:iout1d : 0.000s ( 1 calls) OUT:iout3d : 4.267s ( 1 calls) OUT:isave : 4.277s ( 1 calls)

Task and submission

Use this input, two_layer_rb.

  1. Run the FluTAS using above input.

  2. Submission and Presentation:
    - Submit all the build scripts, run scripts and stdout/logs.
    - Do not submit the output binary data or the source code.

 

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