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Support disk directive in Azure Batch #5120

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@adamrtalbot adamrtalbot commented Jul 8, 2024

This PR adds the process.disk directive support to Azure Batch. After adding this directive, Azure Batch will:

  • Factor disk and VM disk size into the number of slots a single task occupies
  • Create autopools that use VMs with sufficiently large enough storage disks for a single Azure Batch task

Signed-off-by: Adam Talbot <[email protected]>
Changes:
 - Azure calculates autoPool while including resourceDiskSizeGB in the calculation
 - Determines best fit for VM type using criteria of vCPUs, memory, and resourceDiskSizeGB

Signed-off-by: Adam Talbot <[email protected]>
@adamrtalbot adamrtalbot requested a review from a team as a code owner July 8, 2024 10:02
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@adamrtalbot adamrtalbot requested a review from bentsherman July 8, 2024 10:17
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If anyone fancies being a rubber duck, I can't work out why the best match for northeurope is a Standard_B4ls_v2 instead of a Basic_A3 now, especially when a Standard_B4ls_v2 has zero disk attached!

@pditommaso pditommaso marked this pull request as draft July 8, 2024 13:49
Signed-off-by: Adam Talbot <[email protected]>
Adds support for disk directive in Azure Batch tasks by considering disk requirements
when calculating VM slots and selecting VM types. Disk requirements are now factored
into VM scoring alongside CPU and memory.

Modifies the VM scoring algorithm to include disk requirements and weight for CPUs more than memory or disk.

Signed-off-by: adamrtalbot <[email protected]>
@adamrtalbot adamrtalbot marked this pull request as ready for review December 2, 2024 18:42
@bentsherman bentsherman changed the title 4920: Azure Batch supports process.disk directive Support disk directive in Azure Batch (#4920) Dec 4, 2024
@bentsherman bentsherman changed the title Support disk directive in Azure Batch (#4920) Support disk directive in Azure Batch Dec 4, 2024
@bentsherman bentsherman linked an issue Dec 4, 2024 that may be closed by this pull request
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@bentsherman after many long hours and mental calculations about slots, I've finally finished this one.

The only problem I've found is it doesn't account for existing the funnel for cacheing the pool after creation. Not sure how necessary this is but it currently has no awareness of the cpus, memory and disk, just the name. But I wonder if this is indicating I'm missing something?

docs/azure.md Outdated Show resolved Hide resolved
Signed-off-by: Adam Talbot <[email protected]>
Signed-off-by: adamrtalbot <[email protected]>
Signed-off-by: adamrtalbot <[email protected]>
Changes:
 - Include the inverse length of the VM name as a modifier for the score
 - Shorter names are preferred, they have fewer features and are generally cheaper
 - In doing this, I had to switch from a TreeMap to a List of Tuples because TreeMap was only considering the final set of similar VMs

Signed-off-by: adamrtalbot <[email protected]>
Signed-off-by: adamrtalbot <[email protected]>
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Azure Batch: Add disk size to slots calculation
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