On Wednesday, October 14, 2015 at 12:26 AM, Guenter Roeck wrote: > Pardon my ignorance ... those are Xeon Phi processors, and support up to > 244 threads (for Knights Corner). Programming datasheet isn't easily > available, > so I have to guess a bit. Following the processor numbering scheme of > "ordinary" > processors, the CPU ID can therefore be up to 244 (at least) already today, > meaning the limit would have to be 256 (assuming that the processor does > support > per-core temperature sensors). On the other side, the public datasheet > suggests > that there are only three temperature sensors.
> What am I missing here ? Knights Corner can have up to 61 cores with 4 threads per core, so up to 244 threads. All HT siblings reads temperature from the same core and coretemp driver is aware of it. That's it needs just one temp_data structure for all threads on given core. I tested 128 on real HW myself. Thanks, Lukas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
