Adjust painting operators

jaxpm/_src/painting_ops.py

@@ -4,6 +4,8 @@ import jax
 import jax.numpy as jnp
 from jax import lax
 from jax.lax import scan
+from jax.sharding import NamedSharding
+from jax.sharding import PartitionSpec as P
 from jaxdecomp import halo_exchange
 
 from jaxpm._src.spmd_config import (CallBackOperator, CustomPartionedOperator,
@@ -128,6 +130,13 @@ class CICPaintOperator(ShardedOperator):
 
         return [get_axis_size(base_sharding, i) for i in range(2)]
 
+    def infer_sharding_from_base_sharding(base_sharding):
+
+        in_specs = base_sharding.spec, base_sharding.spec, P()
+        out_specs = base_sharding.spec
+
+        return in_specs, out_specs
+
 
 class CICReadOperator(ShardedOperator):
 
@@ -215,6 +224,24 @@ class CICReadOperator(ShardedOperator):
                           neighboor_coords[..., 3]] * kernel).sum(axis=-1)
         return particles.reshape(original_shape)
 
+    def get_aux_input_from_base_sharding(base_sharding):
+
+        def get_axis_size(sharding, index):
+            axis_name = sharding.spec[index]
+            if axis_name == None:
+                return 1
+            else:
+                return sharding.mesh.shape[sharding.spec[index]]
+
+        return [get_axis_size(base_sharding, i) for i in range(2)]
+
+    def infer_sharding_from_base_sharding(base_sharding):
+
+        in_specs = base_sharding.spec, base_sharding.spec, P()
+        out_specs = base_sharding.spec
+
+        return in_specs, out_specs
+
 
 def _chunk_split(ptcl_num, chunk_size, *arrays):
     """Split and reshape particle arrays into chunks and remainders, with the remainders
@@ -305,7 +332,7 @@ def enmesh(i1, d1, a1, s1, b12, a2, s2):
 
 
 def _scatter_chunk(carry, chunk):
-    mesh_shape , mesh, offset, cell_size = carry
+    mesh, offset, cell_size, mesh_shape = carry
     pmid, disp, val = chunk
     spatial_ndim = pmid.shape[1]
     spatial_shape = mesh.shape
@@ -317,7 +344,7 @@ def _scatter_chunk(carry, chunk):
     ind = tuple(ind[..., i] for i in range(spatial_ndim))
     mesh = mesh.at[ind].add(val * frac)
 
-    carry = mesh, offset, cell_size
+    carry = mesh, offset, cell_size, mesh_shape
     return carry, None
 
 
@@ -334,7 +361,7 @@ def scatter(pmid,
     mesh = jnp.asarray(mesh)
 
     remainder, chunks = _chunk_split(ptcl_num, chunk_size, pmid, disp, val)
-    carry = mesh.shape , mesh, offset, cell_size
+    carry = mesh, offset, cell_size, mesh.shape
     if remainder is not None:
         carry = _scatter_chunk(carry, remainder)[0]
     carry = scan(_scatter_chunk, carry, chunks)[0]
@@ -342,31 +369,6 @@ def scatter(pmid,
     return mesh
 
 
-def gather(ptcl, conf, mesh, val=1, offset=0, cell_size=None):
-    """Gather particle values from mesh multilinearly in n-D.
-
-    Parameters
-    ----------
-    ptcl : Particles
-    conf : Configuration
-    mesh : ArrayLike
-        Input mesh.
-    val : ArrayLike, optional
-        Input values, can be 0D.
-    offset : ArrayLike, optional
-        Offset of mesh to particle grid. If 0D, the value is used in each dimension.
-    cell_size : float, optional
-        Mesh cell size in [L]. Default is ``conf.cell_size``.
-
-    Returns
-    -------
-    val : jax.Array
-        Output values.
-
-    """
-    return _gather(ptcl.pmid, ptcl.disp, conf, mesh, val, offset, cell_size)
-
-
 def _chunk_cat(remainder_array, chunked_array):
     """Reshape and concatenate one remainder and one chunked particle arrays."""
     array = chunked_array.reshape(-1, *chunked_array.shape[2:])
@@ -377,7 +379,7 @@ def _chunk_cat(remainder_array, chunked_array):
     return array
 
 
-def _gather(pmid, disp, mesh , chunk_size=2**24,  val=1, offset=0, cell_size=None):
+def _gather(pmid, disp, mesh, chunk_size=2**24, val=1, offset=0, cell_size=1.):
     ptcl_num, spatial_ndim = pmid.shape
 
     mesh = jnp.asarray(mesh)
@@ -388,10 +390,9 @@ def _gather(pmid, disp, mesh , chunk_size=2**24,  val=1, offset=0, cell_size=Non
         raise ValueError('channel shape mismatch: '
                          f'{mesh.shape[spatial_ndim:]} != {val.shape[1:]}')
 
-    remainder, chunks = _chunk_split(ptcl_num, chunk_size, pmid, disp,
+    remainder, chunks = _chunk_split(ptcl_num, chunk_size, pmid, disp, val)
-                                     val)
 
-    carry = mesh.shape , mesh, offset, cell_size
+    carry = mesh, offset, cell_size, mesh.shape
     val_0 = None
     if remainder is not None:
         val_0 = _gather_chunk(carry, remainder)[1]
@@ -403,7 +404,7 @@ def _gather(pmid, disp, mesh , chunk_size=2**24,  val=1, offset=0, cell_size=Non
 
 
 def _gather_chunk(carry, chunk):
-    mesh_shape , mesh, offset, cell_size = carry
+    mesh, offset, cell_size, mesh_shape = carry
     pmid, disp, val = chunk
 
     spatial_ndim = pmid.shape[1]
@@ -413,8 +414,8 @@ def _gather_chunk(carry, chunk):
     chan_axis = tuple(range(-chan_ndim, 0))
 
     # multilinear mesh indices and fractions
-    ind, frac = enmesh(pmid, disp, cell_size, mesh_shape, offset,
+    ind, frac = enmesh(pmid, disp, cell_size, mesh_shape, offset, cell_size,
-                       cell_size, spatial_shape, False)
+                       spatial_shape)
 
     # gather
     ind = tuple(ind[..., i] for i in range(spatial_ndim))
@@ -441,7 +442,7 @@ class CICPaintDXOperator(ShardedOperator):
                                jnp.arange(particle_mesh.shape[2]),
                                indexing='ij')
 
-        pmid = jnp.stack([b, a, c], axis=-1)
+        pmid = jnp.stack([a, b, c], axis=-1)
         pmid = pmid.reshape([-1, 3])
         return scatter(pmid, displacement.reshape([-1, 3]), particle_mesh)
 
@@ -489,6 +490,24 @@ class CICPaintDXOperator(ShardedOperator):
 
         return particle_mesh
 
+    def get_aux_input_from_base_sharding(base_sharding):
+
+        def get_axis_size(sharding, index):
+            axis_name = sharding.spec[index]
+            if axis_name == None:
+                return 1
+            else:
+                return sharding.mesh.shape[sharding.spec[index]]
+
+        return [get_axis_size(base_sharding, i) for i in range(2)]
+
+    def infer_sharding_from_base_sharding(base_sharding):
+
+        in_specs = base_sharding.spec, P()
+        out_specs = base_sharding.spec
+
+        return in_specs, out_specs
+
 
 class CICReadDXOperator(ShardedOperator):
 
@@ -498,7 +517,7 @@ class CICReadDXOperator(ShardedOperator):
 
         del halo_size
 
-        original_shape = (*particle_mesh.shape, 3)
+        original_shape = particle_mesh.shape
 
         a, b, c = jnp.meshgrid(jnp.arange(particle_mesh.shape[0]),
                                jnp.arange(particle_mesh.shape[1]),
@@ -507,8 +526,10 @@ class CICReadDXOperator(ShardedOperator):
 
         pmid = jnp.stack([b, a, c], axis=-1)
         pmid = pmid.reshape([-1, 3])
-        return _gather(pmid, jnp.zeros_like(pmid), particle_mesh)
+        positions = _gather(pmid, jnp.zeros_like(pmid), particle_mesh)
-    
+
+        return positions.reshape(original_shape)
+
     def multi_gpu_prolog(particle_mesh, halo_size=0, __aux_input=None):
 
         halo_tuple = (halo_size, halo_size)
@@ -528,20 +549,10 @@ class CICReadDXOperator(ShardedOperator):
                                       halo_periods=(True, True, True))
 
         return particle_mesh, halo_size
-        
-    
-    def multi_gpu_impl(particle_mesh, halo_size=0, __aux_input=None):
 
-        original_shape = (*particle_mesh.shape, 3)
+    def multi_gpu_impl(particle_mesh, halo_size, __aux_input=None):
-        halo_tuple = (halo_size, halo_size)
-        if __aux_input[0] == 1:
-            halo_width = ((0, 0), halo_tuple, (0, 0))
-        elif __aux_input[1] == 1:
-            halo_width = (halo_tuple, (0, 0), (0, 0))
-        else:
-            halo_width = (halo_tuple, halo_tuple, (0, 0))
 
-        particle_mesh = jnp.pad(particle_mesh, halo_width)
+        original_shape = particle_mesh.shape
 
         a, b, c = jnp.meshgrid(jnp.arange(particle_mesh.shape[0]),
                                jnp.arange(particle_mesh.shape[1]),
@@ -550,10 +561,30 @@ class CICReadDXOperator(ShardedOperator):
 
         pmid = jnp.stack([b + halo_size, a + halo_size, c], axis=-1)
         pmid = pmid.reshape([-1, 3])
-        # TODO must be reshaped
+        positions = _gather(pmid, jnp.zeros_like(pmid), particle_mesh)
-        return _gather(pmid, jnp.zeros_like(pmid), particle_mesh), halo_size
+
-    
+        return positions.reshape(original_shape)
+
+    def get_aux_input_from_base_sharding(base_sharding):
+
+        def get_axis_size(sharding, index):
+            axis_name = sharding.spec[index]
+            if axis_name == None:
+                return 1
+            else:
+                return sharding.mesh.shape[sharding.spec[index]]
+
+        return [get_axis_size(base_sharding, i) for i in range(2)]
+
+    def infer_sharding_from_base_sharding(base_sharding):
+
+        in_specs = base_sharding.spec, P()
+        out_specs = base_sharding.spec
+
+        return in_specs, out_specs
+
 
 register_operator(CICPaintOperator)
 register_operator(CICReadOperator)
 register_operator(CICPaintDXOperator)
+register_operator(CICReadDXOperator)

jaxpm/painting.py

@@ -4,22 +4,28 @@ import jax.numpy as jnp
 
 import jaxpm
 import jaxpm.ops
-from jaxpm.kernels import cic_compensation, fftk
+from jaxpm._src.spmd_config import pm_operators
+from jaxpm.kernels import cic_compensation
 
 
 def cic_paint(particle_mesh, positions, halo_size=0):
-    return jaxpm.ops.cic_paint(particle_mesh, positions, halo_size=halo_size)
+    return pm_operators.cic_paint(particle_mesh,
+                                  positions,
+                                  halo_size=halo_size)
 
 
 def cic_read(mesh, positions, halo_size=0):
-    return jaxpm.ops.cic_read(mesh, positions, halo_size=halo_size)
+    return pm_operators.cic_read(mesh, positions, halo_size=halo_size)
 
 
 def cic_paint_dx(displacements, halo_size=0):
-    return jaxpm.ops.cic_paint_dx(displacements, halo_size=halo_size)
+    return pm_operators.cic_paint_dx(displacements, halo_size=halo_size)
+
+
+def cic_read_dx(particle_mesh, halo_size=0):
+    return pm_operators.cic_read_dx(particle_mesh, halo_size=halo_size)
 
 
-# TO REDO
 def cic_paint_2d(mesh, positions, weight):
     """ Paints positions onto a 2d mesh
     mesh: [nx, ny]