3 ms·

The 3090 supports but doesn't let you enable the titan driver paths, SR-IOV, NGX, and critically, is capped to half-rate tensor operations with FP32 accumulate.

The 3090 supports but doesn't let you enable the titan driver paths, SR-IOV, NGX, and critically, is capped to half-rate tensor operations with FP32 accumulate. An official firmware release could change this but they're likely saving it for the Titan cards down the road.

moyix 6y ago
Where do you see that this is artificial (i.e. in software/firmware) rather than just missing some hardware that's present on the Titan/Quadro cards?
- paulgerhardt 6y ago
  The same thing happened with the 2080 / Titan and looks to be confirmed for the 3000 series by AnandTech. https://twitter.com/RyanSmithAT/status/1301996479448457216 https://twitter.com/RyanSmithAT/status/1301996479448457216 The Reddit AMA implies the Ampere architecture supports this configuration but is software limited under the FP32 section: https://www.reddit.com/r/nvidia/comments/ilhao8/nvidia_rtx_30series_you_asked_we_answered/?utm_source=share&utm_medium=ios_app&utm_name=iossmf https://www.reddit.com/r/nvidia/comments/ilhao8/nvidia_rtx_3... To epistemologically correct, I don't believe one will ever see a statement from NVIDIA confirming that this is a software limitation. I believe it's just inferred. edit: This is close to confirmation: https://imgur.com/a/RH8vyz9 https://imgur.com/a/RH8vyz9 -though I may suspect there are non reversible hardware fuses at play too.
  - moyix 6y ago
    The AMA section on FP32 seems to imply it's in hardware though, unless I'm missing something – datapath is a hardware term, at least. I mean, I really hope that it's just in the driver so that an enterprising reverse engineer can hack the driver and re-enable full FP16/FP32 accumulate :)
  - M277 6y ago
    They also did this with the TITAN in the past, I think, so it's not entirely unprecedented. TITAN X got access to pro drivers shortly after AMD announced the Vega Frontier Edition.
  - meragrin_ 6y ago
    Maybe it is a type of binning. Maybe the machine learning specific hardware is more prone to errors so they just disable that on subpar chips and sell them for use in graphics cards?

moyix 6y ago

Where do you see that this is artificial (i.e. in software/firmware) rather than just missing some hardware that's present on the Titan/Quadro cards?

paulgerhardt 6y ago
The same thing happened with the 2080 / Titan and looks to be confirmed for the 3000 series by AnandTech. https://twitter.com/RyanSmithAT/status/1301996479448457216 https://twitter.com/RyanSmithAT/status/1301996479448457216 The Reddit AMA implies the Ampere architecture supports this configuration but is software limited under the FP32 section: https://www.reddit.com/r/nvidia/comments/ilhao8/nvidia_rtx_30series_you_asked_we_answered/?utm_source=share&utm_medium=ios_app&utm_name=iossmf https://www.reddit.com/r/nvidia/comments/ilhao8/nvidia_rtx_3... To epistemologically correct, I don't believe one will ever see a statement from NVIDIA confirming that this is a software limitation. I believe it's just inferred. edit: This is close to confirmation: https://imgur.com/a/RH8vyz9 https://imgur.com/a/RH8vyz9 -though I may suspect there are non reversible hardware fuses at play too.
- moyix 6y ago
  The AMA section on FP32 seems to imply it's in hardware though, unless I'm missing something – datapath is a hardware term, at least. I mean, I really hope that it's just in the driver so that an enterprising reverse engineer can hack the driver and re-enable full FP16/FP32 accumulate :)
- M277 6y ago
  They also did this with the TITAN in the past, I think, so it's not entirely unprecedented. TITAN X got access to pro drivers shortly after AMD announced the Vega Frontier Edition.
- meragrin_ 6y ago
  Maybe it is a type of binning. Maybe the machine learning specific hardware is more prone to errors so they just disable that on subpar chips and sell them for use in graphics cards?