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phas new numpy rng generator without setting/getting states manually #44

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phas new numpy rng generator without setting/getting states manually #44

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5ed08e0
phas new numpy rng generator without setting/getting states manually
Saladino93 Sep 15, 2023
e384dea
updates, still have to include spawn for parallel
Saladino93 Sep 19, 2023
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17 changes: 16 additions & 1 deletion plancklens/sims/phas.py
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Original file line number Diff line number Diff line change
Expand Up @@ -85,11 +85,25 @@ def __init__(self, lib_dir, get_state_func=np.random.get_state, nsims_max=None):
self._rng_db = rng_db(os.path.join(lib_dir, 'rngdb.db'), idtype='INTEGER')
self._get_rng_state = get_state_func

@staticmethod
def get_state(idx):
"""Returns a random number generator state from a seed. """
#sg = np.random.SeedSequence(idx)
#mt19937 = np.random.MT19937(sg)
#rs = np.random.RandomState(mt19937)
rs = np.random.Generator(np.random.MT19937())
dictionary = rs.__getstate__()
l = [dictionary[k] for k in dictionary.keys()]
return [l[0], l[1]['key'], l[1]['pos'], 0, 0.0]
#return rs.get_state()

def get_sim(self, idx, **kwargs):
"""Returns sim number idx and caches random number generator state. """
if self.has_nmax(): assert idx < self.nmax

if not self.is_stored(idx):
self._rng_db.add(idx, self._get_rng_state())
#self._rng_db.add(idx, self._get_rng_state())
self._rng_db.add(idx, self.get_state(idx))
return self._build_sim_from_rng(self._rng_db.get(idx), **kwargs)

def has_nmax(self):
Expand Down Expand Up @@ -193,3 +207,4 @@ def get_sim(self, idx, idf=None, phas_only=False):

def hashdict(self):
return {'nfields': self.nfields, 'lmax':self.lmax}