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Published equation contexts

U≈Ndevices⋅Bupdate⋅pegressU \approx N_{\mathrm{devices}} \cdot B_{\mathrm{update}} \cdot p_{\mathrm{egress}}

Why this formula appears here

U is the least discussed term in this accounting and, at fleet scale, sometimes the largest. It can be approximated as U≈Ndevices⋅Bupdate⋅pegressU \approx N_{\mathrm{devices}} \cdot B_{\mathrm{update}} \cdot p_{\mathrm{egress}}. the number of devices in the fleet, times the bytes pushed to each device per update, times the price per byte of moving that data. Amazon’s published CloudFront pricing states data transfer out to the internet at $0.085 per gigabyte for the first nine terabytes per month in the United States, Mexico and Canada tier, after a free first terabyte [ 14 ] . As an illustrative calculation only, using that public list price rather than any negotiated enterprise rate: a modest 200-megabyte delta update pushed to a fifty-million-device fleet is ten million…

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NdevicesN_{\mathrm{devices}}

Symbol N_devices

NdN_devices is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

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BupdateB_{\mathrm{update}}

Symbol B_update

BuB_update is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

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pegressp_{\mathrm{egress}}

Symbol p_egress

pep_egress is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

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Its accuracy depends on the assumptions and range of use described in the article.

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Published contexts (1)

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U≈Ndevices⋅Bupdate⋅pegress,U \approx N_{\mathrm{devices}} \cdot B_{\mathrm{update}} \cdot p_{\mathrm{egress}},

Equation 26 · Edge AI & Electronics

The Real Economics of Shipping a Model to a Device

This equation gives an approximation: it relates the quantities while allowing an approximation.

U is the least discussed term in this accounting and, at fleet scale, sometimes the largest. It can be approximated as U≈Ndevices⋅Bupdate⋅pegressU \approx N_{\mathrm{devices}} \cdot B_{\mathrm{update}} \cdot p_{\mathrm{egress}}. the number of devices in the fleet, times the bytes pushed to each device per update, times the price per byte of moving that data. Amazon’s published CloudFront pricing states data transfer out to the internet at $0.085 per gigabyte for the first nine terabytes per month in the United States, Mexico and Canada tier, after a free first terabyte [ 14 ] . As an illustrative calculation only, using that public list price rather than any negotiated enterprise rate: a modest 200-megabyte delta update pushed to a fifty-million-device fleet is ten million…

Meanings in this article

  • UU: the least discussed term in this accounting and, at fleet scale, sometimes the largest.
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