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How using different pipeline step size affects cost?

Sergio Sánchez González
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June 26, 2024

How using different pipeline step size 1x, 2x, 4x, or 8x affects cost?

If cost is based on minutes running why not using always 8x?

 

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Alexandre Léveillé
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June 26, 2024

Hi @Sergio Sánchez González 

Cost is indeed based on the minutes used.

The cost for 1x and 8x will be the same only if a pipeline runs eight times faster on a 8x instance, which is not always the case.

If you pipeline is 50% faster on an 8x instead, the total cost will be 4x.

Eg:

- A pipeline take 14 minutes on a 1x instance. You will be charged for 14 minutes.

- The same pipeline takes 7 minutes (50% faster) on a 8x instance. You will be charged 7 * 8 = 56 minutes (so, four times the cost of 14 minutes).

 

When building applications, having more CPU isn't necessarily better because some compilers or unit-test frameworks can't make the most of N CPUs.

I suggest you experiment with sizing to see what fits your pipeline the best. Perhaps the best cost/time ratio will be a 2x for a pipeline and 4x for another (also keep in mind that 2x will be migrated to the new architecture sometime in August)

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