[scheduler/cuebot/pycue/rqd/pyoutline] Booking by Slot #2105
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This PR introduces a new module called "scheduler." This module is responsible for the booking aspect of Cuebot and is designed to offload this feature from the central module. Rationale: Cuebot's booking logic depends on responding to each HostReport with a new task that searches for layers to dispatch to the reporting host. Consequently, each request generates a [BookingQuery](https://github.com/AcademySoftwareFoundation/OpenCue/blob/master/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/DispatchQuery.java), which significantly impacts the database. As a result, scaling Cuebot is limited by the need to optimize database capacity to handle complex queries. This new module alleviates the booking workload from Cuebot. Booking on the Scheduler is not triggered by host reports; instead, it operates through an internal loop that searches for pending jobs and seeks suitable matches from a cached view of the hosts in the database. The scheduler organizes layers and hosts into clusters, with each cluster representing a group of show and allocation combinations. This structure allows multiple instances of the scheduler to share the load without competing for work, which is a significant issue in Cuebot. To enable Cuebot and the Scheduler to run concurrently without competing for work, a new feature was added to Cuebot, as detailed in AcademySoftwareFoundation#2087. This feature allows for the addition of an exclusion list containing show and allocations that should not be booked, or it can halt booking for all shows altogether. --------- Signed-off-by: Diego Tavares <[email protected]>
This field limits the number of concurrent frames allowed to run on a specific host.
This commit is the first step towards the goal of allowing a new booking mode that doesn't take cores and memory into consideration, but a predefined limit on how many concurrent frames a host is allowed to run. Rationale: Booking by slot is useful for pipelines where frames are small and limited not by their cpu/memory consumption but by other resources like storage bandwith or network availability. In these scenarios, limiting the concurrency is more important than the resource consumption.
Add slots_required attribute to layer for slot-based booking
DiegoTavares
requested review from
lithorus and
ramonfigueiredo
as code owners
6 tasks
Minor change to force a new actions execution on the AcademySoftwareFoundation#2104 Signed-off-by: Diego Tavares <[email protected]>
DiegoTavares
force-pushed
the
new-scheduler
branch
from
8b9ffdd to
f1c9124
Compare
Collaborator
Author
|
A new PR has been created to resolve conflicts. #2115 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Add a new booking mode that doesn't take cores and memory into consideration, but a predefined limit on how many concurrent frames a host is allowed to run.
Rationale: Booking by slot is useful for pipelines where frames are small and limited not by their
cpu/memory consumption but by other resources like storage bandwidth or network availability. In
these scenarios, limiting the concurrency is more important than the resource consumption.
Attention:* This branch is stacked on top of #2002
Tasks: