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Experimental: Asynchronous kernels#3402

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Experimental: Asynchronous kernels#3402
bendudson wants to merge 1 commit into
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lazy-multi-kernels

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Gather kernels using an eval_into(result, expression) builder pattern. The kernels can be streamed asynchronously or merged into one large kernel.

Gather kernels using an `eval_into(result, expression)` builder
pattern. The kernels can be streamed asynchronously or merged
into one large kernel.
@bendudson bendudson added the work in progress Not ready for merging label Jun 22, 2026

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clang-tidy made some suggestions

ddt(vort) = -bracket(phi, vort, bm) + alpha * (nonzonal_phi - nonzonal_n);
// Two kernels can be evaluated asynchronously
eval_into(ddt(n), // Density equation
-bracket(phi, n, bm) + alpha * (nonzonal_phi - nonzonal_n)

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warning: no header providing "bracket" is directly included [misc-include-cleaner]

              -bracket(phi, n, bm) + alpha * (nonzonal_phi - nonzonal_n)
               ^

Comment thread include/bout/fieldops.hxx
#include <type_traits>
#include <utility>
#include <vector>

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warning: included header vector is not used directly [misc-include-cleaner]

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