Comments (4)
One way you could try is with tokio channels, using async send
and sync blocking_recv
something like:
std::iter::from_fn(move || rx.blocking_recv()).par_bridge() //...
from rayon.
If you are using sqlx
and therefore already run within an async runtime providing a thread pool, I also suspect that just chunking the rows using something like StreamExt::chunks
and spawning a task for each chunk would be preferable to trying to force this into a parallel iterator. Alternatively, spawning a task per hardware thread and using an async mpmc channel like flume
or kanal
might work as well.
from rayon.
You may have an easier time if you just use an async threadpool, like tokio provides.
What sort of results come out of your parallel process? The shape of that will affect how you might shoehorn this into rayon.
from rayon.
Thx @cuviper , each operation is essentially a bool -- in a way, I am trying to parallel-ize validation of a large dataset, searching for any row that do not pass validation. So ordering is not important, but would be good to abort early if any validation fails.
from rayon.
Related Issues (20)
- Suggestion for stack size when calling par_sort_unstable HOT 5
- Tag missing for release 1.10.0 HOT 1
- Unable to parallelize properly using `par_iter` or `par_bridge` HOT 8
- Documentation for `ParallelIterator::fold` and/or `ParallelIterator::reduce` seam to be incorrect HOT 5
- Slowdown when using deeply nested vector HOT 6
- Potential `len` method ambiguity in `src/range.rs` HOT 5
- Potential to fix memory ordering for value HOT 2
- a broadcast that only gets executed on idle threads
- `in_place_scope` documentation is confusing/unclear HOT 14
- use_current_thread and the global thread pool HOT 2
- Why does ThreadPool block until a operation is finished? HOT 1
- A way to hook before/after job execution (and/or a way to see a number of tasks in the processing queue)
- Function dependencies with Rayon without blocking the thread / Rayon synchronization primitives?
- Add synchronization guarantees for `ParallelIterator::for_each*` HOT 1
- Par bridge with optional buffering IO handling HOT 1
- Thread pool without work stealing HOT 6
- Question about return types from .map() HOT 4
- Terribly inefficient design and possible solution HOT 5
- [Discussion] Is it possible to impl `IntoIterator` for `ParallelIterator`? HOT 3
- Yield locks HOT 1
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from rayon.