3 ms·
Yeah, people tend to completely exaggerate the impact of throttling from AVX512. It's only an issue when you do short bursts of AVX512 and the rest is not AVX51
by m0zg 7y ago
Yeah, people tend to completely exaggerate the impact of throttling from AVX512. It's only an issue when you do short bursts of AVX512 and the rest is not AVX512. If you do math and your math can be done in AVX512, even with throttling it's going to be substantially faster. That it runs hotter doesn't concern me at all. Intel's claimed safe Tjunction is something like 105C. EEs tend to take the published component specifications seriously (e.g. your 1000v diode is guaranteed to withstand at least 1KV of reverse voltage), so I trust Intel when they say things are fine up to that temperature. Even beyond that it won't burn out, it'll just thermal throttle.
- magicalhippo 7y agoMaximum Tjunction for an STM32F303 (just happened to have datasheet open) is 150C, as is most other ICs I've seen. So is 105C just a very conservative number, compensating for the probe location, or are there process specific things which brings it down to 105C?
- userbinator 7y agoFrom what I understand, the newer very-high-density procsses are far more sensitive to voltage and temperature than the older larger ones.
- magicalhippo 7y agoMakes sense. The STM32G series, which still has 150C Tjmax, is ST's first 90nm MCU[1] so yeah. [1]: https://blog.st.com/stm32g0-mainstream-90-nm-mcu/ https://blog.st.com/stm32g0-mainstream-90-nm-mcu/