Ak/more perf improvements

src/adam_core/coordinates/transform.py

@@ -131,9 +131,7 @@ def _cartesian_to_spherical(
 )
 
 
-def cartesian_to_spherical(
-    coords_cartesian: Union[np.ndarray, jnp.ndarray]
-) -> jnp.ndarray:
+def cartesian_to_spherical(coords_cartesian: np.ndarray) -> np.ndarray:
     """
     Convert Cartesian coordinates to a spherical coordinates.
 
@@ -163,16 +161,17 @@ def cartesian_to_spherical(
             (same unit of time as the x, y, and z velocities).
     """
     # Define chunk size
-    chunk_size = 50
+    chunk_size = 200
 
-    # Process in chunks
-    coords_spherical_chunks = []
+    # Process in chunk
+    coords_spherical: np.ndarray = np.empty((0, 6))
     for cartesian_chunk in process_in_chunks(coords_cartesian, chunk_size):
         coords_spherical_chunk = _cartesian_to_spherical_vmap(cartesian_chunk)
-        coords_spherical_chunks.append(coords_spherical_chunk)
+        coords_spherical = np.concatenate(
+            (coords_spherical, np.asarray(coords_spherical_chunk))
+        )
 
     # Concatenate chunks and remove padding
-    coords_spherical = jnp.concatenate(coords_spherical_chunks, axis=0)
     coords_spherical = coords_spherical[: len(coords_cartesian)]
 
     return coords_spherical
@@ -290,16 +289,17 @@ def spherical_to_cartesian(
         vz : z-velocity in the same units of z per arbitrary unit of time.
     """
     # Define chunk size
-    chunk_size = 50
+    chunk_size = 200
 
     # Process in chunks
-    coords_cartesian_chunks = []
+    coords_cartesian: np.ndarray = np.empty((0, 6))
     for spherical_chunk in process_in_chunks(coords_spherical, chunk_size):
         coords_cartesian_chunk = _spherical_to_cartesian_vmap(spherical_chunk)
-        coords_cartesian_chunks.append(coords_cartesian_chunk)
+        coords_cartesian = np.concatenate(
+            (coords_cartesian, np.asarray(coords_cartesian_chunk))
+        )
 
-    # Concatenate chunks and remove padding
-    coords_cartesian = jnp.concatenate(coords_cartesian_chunks, axis=0)
+    # Remove padding
     coords_cartesian = coords_cartesian[: len(coords_spherical)]
 
     return coords_cartesian
@@ -585,7 +585,7 @@ def cartesian_to_keplerian(
         tp : time of periapsis passage in days.
     """
     # Define chunk size
-    chunk_size = 50
+    chunk_size = 200
 
     # Process in chunks
     coords_keplerian_chunks = []
@@ -989,7 +989,7 @@ def keplerian_to_cartesian(
         raise ValueError(err)
 
     # Define chunk size
-    chunk_size = 50
+    chunk_size = 200
 
     # Process in chunks
     coords_cartesian_chunks = []
@@ -1247,7 +1247,7 @@ def cometary_to_cartesian(
         vz : z-velocity in units of au per day.
     """
     # Define chunk size
-    chunk_size = 50
+    chunk_size = 200
 
     # Process in chunks
     coords_cartesian_chunks = []

src/adam_core/dynamics/ephemeris.py

@@ -208,11 +208,11 @@ def generate_ephemeris_2body(
     times = propagated_orbits.coordinates.time.mjd().to_numpy(zero_copy_only=False)
 
     # Define chunk size
-    chunk_size = 50
+    chunk_size = 200
 
     # Process in chunks
-    ephemeris_chunks = []
-    light_time_chunks = []
+    ephemeris_spherical: np.ndarray = np.empty((0, 6))
+    light_time: np.ndarray = np.empty((0,))
 
     for orbits_chunk, times_chunk, observer_coords_chunk, mu_chunk in zip(
         process_in_chunks(propagated_orbits_barycentric.coordinates.values, chunk_size),
@@ -230,15 +230,14 @@ def generate_ephemeris_2body(
             tol,
             stellar_aberration,
         )
-        ephemeris_chunks.append(ephemeris_chunk)
-        light_time_chunks.append(light_time_chunk)
+        ephemeris_spherical = np.concatenate(
+            (ephemeris_spherical, np.asarray(ephemeris_chunk))
+        )
+        light_time = np.concatenate((light_time, np.asarray(light_time_chunk)))
 
     # Concatenate chunks and remove padding
-    ephemeris_spherical = jnp.concatenate(ephemeris_chunks, axis=0)[:num_entries]
-    light_time = jnp.concatenate(light_time_chunks, axis=0)[:num_entries]
-
-    ephemeris_spherical = np.array(ephemeris_spherical)
-    light_time = np.array(light_time)
+    ephemeris_spherical = np.array(ephemeris_spherical)[:num_entries]
+    light_time = np.array(light_time)[:num_entries]
 
     if not propagated_orbits.coordinates.covariance.is_all_nan():
 

src/adam_core/dynamics/propagation.py

@@ -107,7 +107,7 @@ def propagate_2body(
     object_ids = orbits.object_id.to_numpy(zero_copy_only=False)
 
     # Define chunk size
-    chunk_size = 50  # Example chunk size
+    chunk_size = 200  # Changed from 1000
 
     # Prepare arrays for chunk processing
     # This creates a n x m matrix where n is the number of orbits and m is the number of times
@@ -121,7 +121,7 @@ def propagate_2body(
     t1_ = np.tile(t1, n_orbits)
 
     # Process in chunks
-    orbits_propagated_chunks = []
+    orbits_propagated: np.ndarray = np.empty((0, 6))
     for orbits_chunk, t0_chunk, t1_chunk, mu_chunk in zip(
         process_in_chunks(orbits_array_, chunk_size),
         process_in_chunks(t0_, chunk_size),
@@ -131,10 +131,9 @@ def propagate_2body(
         orbits_propagated_chunk = _propagate_2body_vmap(
             orbits_chunk, t0_chunk, t1_chunk, mu_chunk, max_iter, tol
         )
-        orbits_propagated_chunks.append(orbits_propagated_chunk)
-
-    # Concatenate all chunks
-    orbits_propagated = jnp.concatenate(orbits_propagated_chunks, axis=0)
+        orbits_propagated = np.concatenate(
+            (orbits_propagated, np.asarray(orbits_propagated_chunk))
+        )
 
     # Remove padding
     orbits_propagated = orbits_propagated[: n_orbits * n_times]

src/adam_core/observers/state.py

@@ -121,7 +121,7 @@ def get_observer_state(
             o_vec_ITRF93 = np.dot(R_EARTH_EQUATORIAL, o_hat_ITRF93)
 
             # Warning! Converting times to ET will incur a loss of precision.
-            epochs_et = times.rescale("tdb").et()
+            epochs_et = times.et()
             unique_epochs_et_tdb = epochs_et.unique()
 
             N = len(epochs_et)
@@ -150,7 +150,7 @@ def get_observer_state(
                     -OMEGA_EARTH * R_EARTH_EQUATORIAL * rotation_direction
                 )
 
-        return CartesianCoordinates.from_kwargs(
+        observer_states = CartesianCoordinates.from_kwargs(
             time=times,
             x=r_obs[:, 0],
             y=r_obs[:, 1],
@@ -161,3 +161,5 @@ def get_observer_state(
             frame=frame,
             origin=Origin.from_kwargs(code=[origin.name for i in range(len(times))]),
         )
+
+        return observer_states

src/adam_core/time/time.py

@@ -48,7 +48,6 @@ def et(self) -> pa.lib.DoubleArray:
         Returns the times as ET seconds in a pyarrow array.
         """
         tdb = self.rescale("tdb")
-
         mjd = tdb.mjd()
         return pc.multiply(pc.subtract(mjd, _J2000_TDB_MJD), 86400)
 

src/adam_core/utils/chunking.py

@@ -1,4 +1,4 @@
-import jax.numpy as jnp
+import numpy as np
 
 
 def pad_to_fixed_size(array, target_shape, pad_value=0):
@@ -20,7 +20,7 @@ def pad_to_fixed_size(array, target_shape, pad_value=0):
         Padded array with desired shape
     """
     pad_width = [(0, max(0, t - s)) for s, t in zip(array.shape, target_shape)]
-    return jnp.pad(array, pad_width, constant_values=pad_value)
+    return np.pad(array, pad_width, constant_values=pad_value)
 
 
 def process_in_chunks(array, chunk_size):

src/adam_core/utils/spice.py

@@ -131,10 +131,9 @@ def get_perturber_state(
     setup_SPICE()
 
     # Convert epochs to ET in TDB
-    epochs_et = times.rescale("tdb").et()
+    epochs_et = times.et()
     unique_epochs_et = epochs_et.unique()
     N = len(times)
-    # Get position of the body in km and km/s in the desired frame and measured from the desired origin
     states = np.empty((N, 6), dtype=np.float64)
 
     for i, epoch in enumerate(unique_epochs_et):
@@ -144,9 +143,9 @@ def get_perturber_state(
         )
         states[mask, :] = state
 
-    # Convert to AU and AU per day
+    # Convert units (vectorized operations)
     states = states / KM_P_AU
-    states[:, 3:] = states[:, 3:] * S_P_DAY
+    states[:, 3:] *= S_P_DAY
 
     return CartesianCoordinates.from_kwargs(
         time=times,
@@ -157,5 +156,5 @@ def get_perturber_state(
         vy=states[:, 4],
         vz=states[:, 5],
         frame=frame,
-        origin=Origin.from_kwargs(code=[origin.name for i in range(N)]),
+        origin=Origin.from_kwargs(code=[origin.name] * N),
     )