Simplify distributed-lazy array context usage - #218
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* Boundary lazy comm v2 * fixes * use pytato branch * use staple_distributed_send * add lazy option to wave-op-mpi * ci fix * initial actx support * _RankBoundaryCommunicationLazy: do not convert to/from numpy, flatten * Prototype MPIPytatoPyOpenCLArrayContext * Drop evt.wait in distributed actx * cross_rank_trace_pairs: set 'unique' tag per obj array component * Drop commented-out graph vis from mpi+lazy actx * add clone() * only use Lazy boundary comm when running with lazy actx * fix git branch * remove duplicate requirement * accept distributed+parallel actx * wave-op-mpi: add simple timing * fix MPISingleGridWorkBalancingPytatoArrayContex * fix spelling * initial lazy batched comm * select comm class based on actx * flake8 * use meshmode lazy actx * test: use random tag * undo random tag change * use random tag again * another tag fix * debug tracepair * add dbg * more dbg * Use structured tags for lazily-communicated array containers * MPISingleGridWorkBalancingPytatoArrayContext: Convert symbolic to numeric comm tags * more type annotation * support running eager comm as well * force SingleGridWorkBalancingPytatoArrayContext * wave-op-mpi: Fix name of MPI+Pytato array context * wave-op-mpi: Add missing mpi_communicator arg to DiscretizationCollection * Distributed actx: deduplicate data wrappers before partitioning * undo pytato branch * add loopy req * test with MPI * use serial actx if parallel not available * rework dependency chain * fix lint * make wave-op-mpi run without older lazy actx * adapt to recent arraycontext changes * use DistributedLazyArrayContext to simplify lazy detection * document tag arg * Simplify distributed-lazy array context usage (#218) * add get_reasonable_array_context_class * add get_reasonable_array_context_class * document tag in interior_trace_pairs * update MPI test infrastructure * restructure tests * Weak wave operator: add comm tag * Generalize MPI test orchestration for lazy * MPI test: use actx.compile * test fixes * fix sin() * Drop leap from test_mpi_communication * Add norm assert to test_mpi_communication * restore final_t * Introduce an eager-MPI array context with a sym->num tag map Co-authored-by: Andreas Kloeckner <inform@tiker.net>
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deduplicate_data_wrapperspytato#264