The efficient implementation of RK45 on GPU is capable of integrating up to 4 times faster than a CPU implementation.Read values of initial condition(x0 and y0), number of steps (n) and calculation point (xn) 4. Ordinary Differential Equation Using Fourth Order Runge Kutta (RK) Method Pseudocode 1.Since RK45 is an ODE solver, the script RK45.R will be located in the folder. The solver for the same application is RK45 called with solver Professional Interests: Reservoir Engineering, Fluid Mechanics, Solid Mechanics, Numerical Optimization Applied Mathematician, Mechanical and Petroleum Engineer. MATLAB Central contributions by Lateef Adewale Kareem.