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docs fix: nvidia quotes GB on their GPUs not GiB #2797

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@thundergolfer thundergolfer commented Jan 23, 2025

Describe your changes

I think this was originally my mistake. GiB is an overquote.

I had a good go at finding out exactly how NVIDIA arrives the reported total memory (85520809984 bytes or 85.5 GB on H100). Couldn't get a great answer, but can write something up.

Here's the reported totals from nvidia-smi across all our GPU types

  • H100: 81559MiB (85.52 GB)
  • A100 80GB: 81920MiB (85.89 GB)
  • A100 40GB: 40960MiB (42.94 GB)
  • A10: 23028MiB (24.15 GB)
  • L40S: 46068MiB (48.30 GB)
  • L4: 23034MiB (24.15 GB)
  • T4: 15360MiB (16.11 GB)

Prompted by a user https://modal-com.slack.com/archives/C069RAH7X4M/p1737562964448029

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