set_memory¶
- psi4.driver.set_memory(inputval, execute=True, quiet=False)[source]¶
Reset the total memory allocation.
- Parameters:
inputval (
Union
[str
,int
,float
]) – Memory value. An Integer or float is taken literally as bytes to be set. A string is taken as a unit-containing value (e.g., 30 mb), which is case-insensitive.execute (
bool
) – When False, interpret inputval without setting in Psi4 core.quiet (
bool
) – When True, do not print to the output file.
- Returns:
Number of bytes of memory set.
- Return type:
- Raises:
ValidationError – When <500MiB or disallowed type or misformatted.
Examples
>>> # [1] Passing absolute number of bytes >>> psi4.set_memory(600000000) >>> psi4.get_memory() Out[1]: 600000000L
>>> # [2] Passing memory value as string with units >>> psi4.set_memory('30 GB') >>> psi4.get_memory() Out[2]: 30000000000L
>>> # Good examples >>> psi4.set_memory(800000000) # 800000000 >>> psi4.set_memory(2004088624.9) # 2004088624 >>> psi4.set_memory(1.0e9) # 1000000000 >>> psi4.set_memory('600 mb') # 600000000 >>> psi4.set_memory('600.0 MiB') # 629145600 >>> psi4.set_memory('.6 Gb') # 600000000 >>> psi4.set_memory(' 100000000kB ') # 100000000000 >>> psi4.set_memory('2 eb') # 2000000000000000000
>>> # Bad examples >>> psi4.set_memory({}) # odd type >>> psi4.set_memory('') # no info >>> psi4.set_memory("8 dimms") # unacceptable units >>> psi4.set_memory("1e5 gb") # string w/ exponent >>> psi4.set_memory("5e5") # string w/o units >>> psi4.set_memory(2000) # mem too small >>> psi4.set_memory(-5e5) # negative (and too small)