I have a fortran code compiled into a exe file. I can run it directly through the command line, or simply call the executable from matlab. This two approaches lead to massively different execution speeds and I am unsure why.
If I run the executable file from the command line, the first part of the code runs in 1,000 seconds with all cores/threads of my computer being used:
If instead I call the fortran executable from matlab it does not use all cores/threads and takes approximately 1,400 seconds to run.
I am calling the code using: system('path\LoopFortranToMatlab.exe')