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| octavius | I'm glad I switched computers. The Ryzen 3600 (using 11 threads) has been running verilator for 18.5h now. Much better progress than the sandybridge | 13:39 |
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| octavius | But I see why a work desktop would be very useful | 13:39 |
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| lkcl | octavius, yyup. fan's running continuously, is it? | 14:22 |
| lkcl | flat-out for 18.49 hours so far, eh? | 14:22 |
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| octavius | Yep, now 26.5h | 21:34 |
| octavius | It generated temporary files up to "verilator.save.9679999990" (I haven't figured out where in the microwatt-verilator.cpp the time unit and total time is defined) | 21:35 |
| octavius | Makes about 3 files per minute (incrementing time by about 2000000 with each dump) | 21:37 |
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| octavius | bram.dump is 200GiB XD | 21:38 |
| octavius | so far... | 21:38 |
| octavius | As for the fan, the noctua cpu cooler in this build is overspec'd (because I wanted a * really * quiet pc even under load). 2x 120mm fans help reduce noise too | 21:46 |
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| openpowerbot_ | [irc] <lkcl> octavius: don't let those files get out of hand. | 23:00 |
| openpowerbot_ | [irc] <lkcl> it's a full state-backup plus memory dump each time | 23:01 |
| octavius | Ah, so I need to modify the .cpp code to reduce dumping? | 23:01 |
| openpowerbot_ | [irc] <lkcl> if you don't keep an eye on them (delete them) they'll run your system out of space | 23:01 |
| openpowerbot_ | [irc] <lkcl> yyup. | 23:01 |
| octavius | Oh, so I don't need theM? | 23:01 |
| openpowerbot_ | [irc] <lkcl> only if you ever want to attempt to restart the simulation. | 23:02 |
| openpowerbot_ | [irc] <lkcl> btw i didn't realise you were going to be running the microwatt-verilator simulation, rather than just compiling it. | 23:02 |
| octavius | Does verilator automatically detect they are present and resume, or do I need to pass a param? | 23:03 |
| openpowerbot_ | [irc] <lkcl> if you haven't correctly given it a binary then you may be running nops or the simulated processor may already be in "halt" | 23:03 |
| openpowerbot_ | [irc] <lkcl> you'll need to look at the source code. | 23:03 |
| octavius | I wanted to follow the guide on the Microwatt iwiki page, and see what happens | 23:03 |
| octavius | I guess I wasted a bunch of compute time then | 23:03 |
| openpowerbot_ | [irc] <lkcl> it was well over 6 months ago that i wrote this so i have only the vaguest of recollection | 23:03 |
| openpowerbot_ | [irc] <lkcl> basically.... almost certainly | 23:03 |
| openpowerbot_ | [irc] <lkcl> you could have determined that by enabling VCD trace and examining it | 23:04 |
| openpowerbot_ | [irc] <lkcl> "wasting time" on simulations is extremely common | 23:04 |
| openpowerbot_ | [irc] <lkcl> and (sigh) the verilator-controlled save/restore system is, very annoyingly, not perfect | 23:05 |
| openpowerbot_ | [irc] <lkcl> you can spend 10, 16, 20, 30 hours, get to a point where you need to rewind | 23:05 |
| openpowerbot_ | [irc] <lkcl> attempt to load a prior restore and it *won't work* due to a bug in verilator | 23:05 |
| octavius | Ah yes, I'm starting to remember the pain you wrote about | 23:06 |
| octavius | Ok, I guess I'll look over it tomorrow, and make sure I'm loading a binary | 23:06 |
| octavius | Ah, should've looked at the README.md for microwatt repo.... | 23:08 |
| octavius | :) | 23:08 |
| octavius | Thanks lkcl, will head off. gn | 23:09 |
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