| 9 Jul 2025 |
 dramforever | so gcc can do -mno-fence-tso | 10:30:02 |
| dramforever | but i don't think llvm is getting that any time soon, or ever | 10:30:11 |
 zimward | fun stuff. but sounds like it should be an issue in all C920v1 cores | 10:50:04 |
| dramforever | yes | 10:52:34 |
 Tristan Ross | In reply to @skeuchel:matrix.org
I have both the pioneer (sg2042) and the megrez (eic7700x). the c920 cores in the sg2042 are kinda slow. too slow to use as a desktop. and a lot of processes swamp the memory subsystem. the p550 are already much faster. I would estimate that 4x eic7700x might outperform the sg2042, and would probably also be cheaper. Matthew Croughan has a P550 and I've tried compiling things on it. We've seen a lot of things fail on it which makes me think there's something wrong. How does it perform for you? | 13:52:33 |
| dramforever | In reply to @rosscomputerguy:matrix.org
Matthew Croughan has a P550 and I've tried compiling things on it. We've seen a lot of things fail on it which makes me think there's something wrong. How does it perform for you? fail as in...? | 13:59:50 |
| dramforever | random userspace crash? | 13:59:55 |
| Tristan Ross | A lot of test failures like bus errors and io errors | 14:00:21 |
 Steven Keuchel | It's not as stable as I would like because the board crashes about once a week, but I am not running into the problems you describe. I have fewer tests timing out than on the sg2042, and other test failures are clearly software, not hardware related. | 14:06:57 |
| Steven Keuchel | * It's not as stable as I would like because the board crashes about once a week even when idle, but I am not running into the problems you describe. I have fewer tests timing out than on the sg2042, and other test failures are clearly software, not hardware related. | 14:07:12 |
| Tristan Ross | Had to look at the chat history, one of the things we saw were GCC could sometimes throw a bus error. Some git and gettext things had io errors. | 14:12:57 |
| dramforever | anything in dmesg when that happened? | 14:21:34 |
| Tristan Ross | Yeah, there were dmesg things but it'll be hard to scroll back to get that lol | 14:26:00 |
| dramforever | anyway, my point about reliable hardware just got strengthened | 14:31:12 |
| dramforever | although this could very well be a configuration issue, like clock being set slightly too high, or a one off hardware problem, or power supply issue ... | 14:31:39 |
| zimward | sounds a lot like something like that. but yeah, if we get something it should be something that has been tested to keep running for thousands of hours without crashing | 14:32:38 |
| dramforever | generally these things work is they sell them to us and get free testing and software dev work... | 14:33:32 |
| zimward | i know, very much the pine64 development strategy. | 14:33:57 |
 Alex | No amount of software dev will fix bad hardware though.
Not when the hardware flaws are unpatchably bad. | 14:55:22 |
| zimward | the difference being that the inertia of riscv is unprecedented compared to any isa ever, so that situation is quickly changing | 14:56:41 |
| 10 Jul 2025 |
| dramforever | @rosscomputerguy:matrix.org: random sigbus on 7700x is a known thing, there should be a firmware update that fixes it | 00:15:31 |
| dramforever | maybe eio is the same thing | 00:15:45 |
| Tristan Ross | Oh | 00:16:57 |
| dramforever | also, ask and you shall receive, updates on the sg2044 https://www.reddit.com/r/RISCV/comments/1lvm7j7/sophgo_technology_newsletter_20250709/ | 02:15:10 |
| dramforever | PLEASE do not make this a scuffed chip again | 02:15:27 |
| dramforever | knocking on wood so much | 02:15:36 |
|  Sol Astrius Phœnix joined the room. | 14:38:26 |
| 11 Jul 2025 |
|  elitewhale75 joined the room. | 17:39:18 |
| elitewhale75 changed their display name from Vignesh Guruswami to elitewhale75. | 17:39:45 |
| elitewhale75 set a profile picture. | 17:39:55 |
