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Fusion actx: cache transform_dag #10

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Fusion actx: cache transform_dag #10

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21 changes: 20 additions & 1 deletion meshmode/array_context.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1275,13 +1275,29 @@ def __init__(
self.use_axis_tag_inference_fallback = use_axis_tag_inference_fallback
self.use_einsum_inference_fallback = use_einsum_inference_fallback

self.transform_loopy_cache = WriteOncePersistentDict("meshmode-fusion_actx_transform_loopy_cache-v1",
self.transform_loopy_cache = \
WriteOncePersistentDict("meshmode-fusion_actx_transform_loopy_cache-v1",
key_builder=PytatoKeyBuilder(),
safe_sync=False)
self.transform_dag_cache = \
WriteOncePersistentDict("meshmode-fusion_actx_transform_dag_cache-v1",
key_builder=PytatoKeyBuilder(),
safe_sync=False)

def transform_dag(self, dag):
from pyopencl.array import queue_for_pickling
import pytato as pt

orig_dag = pt.transform.map_and_copy(dag, lambda x: x)

try:
with queue_for_pickling(self.queue, self.allocator):
r = self.transform_dag_cache[dag]
logger.info(f"FusionContractorArrayContext.transform_dag: cache hit")
return r
except KeyError:
logger.debug(f"FusionContractorArrayContext.transform_dag: cache miss")

# {{{ Remove FEMEinsumTags that might have been propagated

# TODO: Is this too hacky?
Expand Down Expand Up @@ -1638,6 +1654,9 @@ def _untag_impl_stored(expr):

# }}}

with queue_for_pickling(self.queue, self.allocator):
self.transform_dag_cache.store_if_not_present(orig_dag, dag)

return dag

def transform_loopy_program(self, t_unit):
Expand Down