Improve cluster plotter performance #3298
Merged
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This should help with utilization of multiple GPUs. The theory here is that under certain conditions timeouts are preventing lower index sectors from making progress (order is not deterministic) and higher index sectors can't start because lower sector index are waiting for retry.
Notifying one of the pending sectors should allow to make progress faster and avoid leaving GPU idling. This may actually allow us to increase maximum time between retries now or even combine multiple concurrent retries into a single queue.
Waiting for community feedback on this before merging.
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