All Questions
Tagged with physics performance
36
questions
3
votes
1
answer
131
views
Improving execution time of physics, data acquisition triggering system simulation
Background
I'm attempting to write a physics simulation code, one portion of which involves simulating the triggering system of some equipment. The equipment works as follows: environmental noise (...
6
votes
2
answers
482
views
Means square displacement (MSD)
I have written a code to calculate the MSD of some molecules. The code averages over multiple time origins (sliding time window) and over all the molecules. I have also made it do one extra thing: do ...
- 61
5
votes
1
answer
231
views
Calculating the energy of the harmonic oscillator using a Monte Carlo method
The problem
The partition function for the quantum harmonic oscillator can be written in the path integral formulation as
$$Z\propto\int Dx(\tau)\exp\left(-\frac{S_E}{\hbar}\right)=\int Dx(\tau)\exp\...
0
votes
1
answer
229
views
Monte Carlo simulation for the harmonic oscillator
Is there any improvement that can be made to the following code, written to simulate the harmonic oscillator in the path integral formulation with Monte Carlo methods?
...
3
votes
2
answers
525
views
VBA functions to calculate sun and moon positions
I have the following VBA code (across three modules) to make UDFs to calculate sun & moon position data. The issue I'm facing is that they are very slow to run as I have over 6000 rows (over 10 ...
- 31
6
votes
2
answers
765
views
C program that finds local acceleration due to gravity (g)
I have written a program in C that calculates local g, by using height from the sea level and latitude.
NOTE: I have to add an image of the equation because that ...
- 411
5
votes
1
answer
67
views
Exploring the space of 8 parameters of a physics problem to then be evaluated in ODE integrator as LSODA millions of times, efficently
there's a function in one of the scripts I've been working on that I really want to improve.
Disclaimer: Being honest, I'm not really very good at programming but I've been learning day to day and it'...
- 163
1
vote
1
answer
47
views
Optimize narrow phase contact detection for phyiscs simulation code
I'm trying to optimize the narrow phase of the contact detection in my code. I'm using OpenMP for multithreading.
That is the starting code:
...
- 111
1
vote
2
answers
188
views
Better way to calculate double-scattering diffraction using cartesian product of arrays?
This script calculates points in reciprocal space for hexagonal 2D lattices, then uses the cartesian product from itertools to add each vector from one lattice to all of the vectors of the other in ...
- 473
3
votes
1
answer
216
views
Molecular dynamics simulation
I'm looking for some fresh ideas on how to optimize a couple of functions in my C++ code. I run the code through a profiler and it shows that they take 20% and 40% of the time respectively. The ...
- 133
4
votes
2
answers
380
views
Simple spatial grid for particle system
I am going to simulate a particle system, the particles are infinitesimal points which apply forces on the neighbors and I need a fast way of making proximity checks, they are going to have a maximum ...
4
votes
1
answer
791
views
Gravity simulation using Numpy and Pygame
This is a simple gravity simulator coded in Python 3.7 using Numpy and Pygame. I was wondering if it can be optimized further. Initially I had coded it using pure Python lists, using nested loops to ...
- 41
5
votes
0
answers
85
views
Butter side up?
I've written a piece of code that determines if a piece toast with butter lands on the butter-side or not, depending on its initial velocity and the table height.
The code is written in Mathematica ...
- 394
5
votes
2
answers
864
views
Simulation of spring-loaded inverted pendulum
I've finally committed to moving to Python 3 from MATLAB. I'm currently porting my MATLAB code, and I'm sure I'm missing a lot of common best-practices.
For reference, I'm simulating a spring-loaded ...
- 153
2
votes
2
answers
127
views
Perturbed phase oscillator integration
I am integrating a system of perturbed phase oscillators. I define the system of equation and also the Jacobian matrix. I have to reshape the one dimensional vector of system state to a 2 dimensional ...
- 235