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VASP Wiki:
NCORE: determines the number of compute cores that work on an individual orbital. Default:
NCORE = 1
NPAR determines the number of bands that are treated in parallel. Default: NPAR = number of cores
These are just a few, please look through the VASP Wiki for others. If you find further details, please pass them onto us and we can add them to this page.
ISTART: Related to starting a job and determines whether or not to read the WAVECAR file.
Others:
Yale: CRC: VASP
NSC: Selecting the Right Number of Cores for a VASP Calculation
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