| 19 Feb 2024 |
 Pratham Patel | In reply to @sorear:matrix.org
that said the th1520 is slower in practice on compilation workloads than vf2 and the pioneer is only slightly faster some of the time this is what the Lichee 4A uses, right? | 13:30:27 |
 sorear | i've been calling the situation "new golden age of processor errata" for years, i just don't see a need to single out t-head and I'm paranoidly wondering whether they get held to a different standard because of geopolitics | 13:30:48 |
| sorear | yes (lp4a=th1520) | 13:30:56 |
| Pratham Patel | probably | 13:31:17 |
 Steven Keuchel | In reply to @sorear:matrix.org
t-head has a userspace erratum where the FP underflow flag is incorrectly not set if a multiply rounds away from zero to produce the smallest normal number, AFAIK the only thing this affects is the glibc regression test suite thanks for that! I am going to read up on it. | 13:44:25 |
| sorear | In reply to @skeuchel:matrix.org
thanks for that! I am going to read up on it. https://github.com/revyos/revyos/issues/17 fwiw | 13:46:22 |
 Alex | In reply to @thefossguy:matrix.org
So far, the only machines I trust for building nixpkgs are the HiFive Unmatched and the VisionFive 2. You should also count the Star64, because it uses the same SoC as the VF2 (unless you have a reason for excluding it too?) | 14:33:01 |
| Pratham Patel | Ah no reason to exclude it, just forgot about it! :D | 14:33:26 |
| Alex | On the topic of implementation errata, I wonder if anyone's doing any exhaustive testing on the various RISC-V processor designs... | 14:34:10 |
| Pratham Patel | there are a million (hyperbole) Indian startups doing exactly that! | 14:34:52 |
| Pratham Patel | the last tenstorrent event almost a year ago in BLR was exactly that :) | 14:35:15 |
