Compute#

Overview#

In Roboto, compute resources are used to ingest and post-process data using actions. Whenever an action is invoked, it runs in an isolated environment with configurable CPU and memory.

In the Free and Premium tiers, compute is provided through our managed platform. Roboto tracks compute usage using a system of compute credits. All Roboto tiers include a certain amount of compute credits at no additional charge — see our pricing page for details.

Compute credits#

Compute credits are a standardized unit for measuring the resources consumed by actions as they run. This system allows Roboto to normalize different compute configurations into a single, consistent value.

One compute credit is equivalent to one hour of compute on the following reference specification:

  • 4 vCPUs (hyperthreads or dedicated cores, 2.5–3 GHz)

  • 8 GiB RAM

  • 21 GiB SSD storage

  • No dedicated GPU

To calculate how many compute credits an action invocation will consume, Roboto uses the following formula:

\[\begin{split}\begin{align} Credits \approx &(0.205 \times vCPU + 0.0225 \times RAM + 0.00056 \times max(0, SSD - 21)) \\ &\times runtime \end{align}\end{split}\]

  • vCPU is the number of virtual CPUs

  • RAM is the memory (in GiB)

  • SSD is the allocated SSD storage (in GiB)

  • runtime is the total duration the action ran, in hours

These coefficients approximate the relative cost to Roboto and may change over time based on underlying cloud provider pricing and platform optimizations.

Representative profiles#

The table below outlines representative compute profiles that may be used by actions. See the subsequent table for an exhaustive list of options.

Scenario

Credits per Hour

vCPUs

RAM (GiB)

SSD (GiB)

Minimum Spec

0.063

0.25 *

0.5

21

Low Spec

0.295

1

4

21

Benchmark

1.000

4

8

21

High Spec

2.404

8

32

100

Maximum Spec

6.080

16

120

200

* Fractional vCPU represents time-share of cycles on a single vCPU hyperthread or core

Action compute options#

The table below outlines the full set of compute options for an action invocation.

These may be selected when invoking an action in the Roboto platform, or may be specified in an action.json file.

vCPUs

RAM Options (MiB)

256 (0.25 vCPU)

512 (0.5 GiB), 1024, 2048 (2 GiB)

512 (0.5 vCPU)

1024 (1 GiB), 2048, 3072, 4096, 5120 (5 GiB)

1024 (1 vCPU)

2048 (2 GiB), 3072, 4096, 5120, 6144, 7168, 8192, 9216 (9 GiB)

2048 (2 vCPU)

4096 (4 GiB), 5120, 6144, 7168, 8192, 9216, 10240, 11264, 12288, 13312, 14336, 15360, 16384, 17408 (17 GiB)

4096 (4 vCPU)

8192 (8 GiB), 9216, 10240, 11264, 12288, 13312, 14336, 15360, 16384, 17408, 18432, 19456, 20480, 21504, 22528, 23552, 24576, 25600, 26624, 27648, 28672, 29696, 30720, 31744 (31 GiB)

8192 (8 vCPU)

16384 (16 GiB), 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, 61440, 65536 (64 GiB)

16384 (16 vCPU)

32768 (32 GiB), 40960, 49152, 57344, 65536, 73728, 81920, 90112, 98304, 106496, 114688, 122880, 131072 (128 GiB)
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