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| author | Kimplul <kimi.h.kuparinen@gmail.com> | 2024-10-31 13:56:30 +0200 |
|---|---|---|
| committer | Kimplul <kimi.h.kuparinen@gmail.com> | 2024-11-01 10:27:56 +0200 |
| commit | 576e73d39d89cf59e5a26fd3f3e9e6787578025d (patch) | |
| tree | 5e70f793c088f87431abc0c953c5ec083d2631ab | |
| parent | d5e5afae9249da312b417bc4f5f45ac164404846 (diff) | |
| download | kmi-576e73d39d89cf59e5a26fd3f3e9e6787578025d.tar.gz kmi-576e73d39d89cf59e5a26fd3f3e9e6787578025d.zip | |
add note about running on real hardware
| -rw-r--r-- | docs/visionfive2.md | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/docs/visionfive2.md b/docs/visionfive2.md index 1e21896..60317b3 100644 --- a/docs/visionfive2.md +++ b/docs/visionfive2.md @@ -15,9 +15,7 @@ serial and ethernet booting, but I haven't looked into how they work. The SD card should have an empty GPT table, you can create one with `fdisk /dev/sdX/`. -1. Build `kmi` with `GENERIC_UBOOT=1`. At the moment, SMP is broken on the - VisionFive2, so you'll need to comment out `smp_bringup(d, fdt);` in - `main.c`. +1. Build `kmi` with `GENERIC_UBOOT=1`. 2. Create three partitions on an SD card of your choice: ``` @@ -75,3 +73,12 @@ the end address or the size of the `initrd`. It should be possible to add the above commands to a script to run automatically, though I haven't personally done this yet. + +## Note about running benchmarks on real hardware + +Currently there's only a single Big Kernel Lock, which is taken by cores when +they are brought up. This means that if you run a benchmark from `benchmarks/` +'directly' (`START()` needs some extra accomodations to properly handle the +extra threads), the benchmark will spend a lot of its time waiting for other +cores to start running, which has a significant impact on the results. I would +suggest (for now) to just comment out `smp_bringup` in `main`. |