P&K MPI3 (AUSTAL Multi Core)

Performance comparision

Displayed are a few quick tests, to assess the gain of P&K MPI. One can see that the gain isn't constant. This is because the relation between CPU usage and I/O changes with lower QS to more impact of I/O. Its still one computer only. The decrease of gain with 4 processes on a 4-core computer can be explained with the impact by the active operating system.

Test-CPU: AMD Ryzen Threadripper 3970X 32-Core Processor
Program: AUSTAL 3.1.0

QS stands equivalent for the particle rate. QS -1 correspnds to partikle rate / 2 and so on.


AUSTAL Computation time in minutes
AUSTAL / AUSTALmpi Cores = 4
AUSTAL / AUSTALmpi Cores = 8
AUSTAL / AUSTALmpi Cores = 16
Data:

qs     -4 to +4
az "anno11.akterm"
gx  3500000.0
gy  5900000.0
xa     10
ya     10
hq     30
x0      0
y0      0
dd     30
nx     30, 60, 120
ny     30, 60, 120
xq    250
yq    450
so2   5.56
ti  "benchmark"