By: Anon (no.delete@this.spam.com), July 26, 2021 6:08 am
Room: Moderated Discussions
Michael S (already5chosen.delete@this.yahoo.com) on July 26, 2021 2:53 am wrote:
> If by "tensor instructions" you mean "outer product" (I think, nowadays
> that's the most common meaning) than I tend to disagree.
> IMHO, many tasks can be accelerated quite nicely by "inner product" instructions. And intuitively,
> without being a chip architect, I would think that "inner product" is inherently more energy
> efficient than "outer product", due to lower fan out to register files.
If you are thinking about a traditional general-register to general-register architecture then probably the fan out would be a problem, but that's not the case, the number of possible output registers are very limited and they may not even be renamed which should limit a lot the fan out, in fact, the ZA should not be much larger than the already existing latches for pipelining the multipliers.
> If by "tensor instructions" you mean "outer product" (I think, nowadays
> that's the most common meaning) than I tend to disagree.
> IMHO, many tasks can be accelerated quite nicely by "inner product" instructions. And intuitively,
> without being a chip architect, I would think that "inner product" is inherently more energy
> efficient than "outer product", due to lower fan out to register files.
If you are thinking about a traditional general-register to general-register architecture then probably the fan out would be a problem, but that's not the case, the number of possible output registers are very limited and they may not even be renamed which should limit a lot the fan out, in fact, the ZA should not be much larger than the already existing latches for pipelining the multipliers.
| Topic | Posted By | Date |
|---|---|---|
| ARM Scalable Matrix Extension | dmcq | 2021/07/25 05:36 PM |
| ARM Scalable Matrix Extension | Adrian | 2021/07/25 09:16 PM |
| Sorry, typos | Adrian | 2021/07/25 10:32 PM |
| ARM SVE Streaming Mode | Adrian | 2021/07/26 12:21 AM |
| ARM SVE Streaming Mode | dmcq | 2021/07/26 04:18 AM |
| ARM SVE Streaming Mode | Adrian | 2021/07/26 04:45 AM |
| ARM Scalable Matrix Extension | Michael S | 2021/07/26 02:53 AM |
| ARM Scalable Matrix Extension | Adrian | 2021/07/26 03:41 AM |
| Inner & outer product | Adrian | 2021/07/26 03:52 AM |
| ARM Scalable Matrix Extension | Rayla | 2021/07/26 05:08 AM |
| ARM Scalable Matrix Extension | dmcq | 2021/07/26 05:38 AM |
| ARM Scalable Matrix Extension | Doug S | 2021/07/26 11:38 AM |
| ARM Scalable Matrix Extension | Brett | 2021/07/26 01:54 PM |
| ARM Scalable Matrix Extension | --- | 2021/07/26 05:48 PM |
| ARM Scalable Matrix Extension | dmcq | 2021/07/27 02:39 AM |
| ARM Scalable Matrix Extension | Anon | 2021/07/26 06:08 AM |
| ARM Scalable Matrix Extension | lkcl | 2022/07/28 03:38 PM |
| ARM Scalable Matrix Extension | dmcq | 2022/07/29 02:24 PM |
| ARM Scalable Matrix Extension | lkcl | 2022/07/29 03:44 PM |