20211105, 02:19  #12  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
2^{2}×7×211 Posts 
Quote:
Dozens of P1 stage 1 would imply dozens of TF to 92 first. I expect < 10 TF to 92 bits in 2022, perhaps <5. And probably no more P1 stage 1 or 2 than 4 in 2022. The OBD subproject was at level 21.something IIRC when you took one exponent to 91 bits. There are still millions of OBD prime exponents available at 84 bits or lower. Other participants are running some on lower bit levels, despite the current levels system ignoring those. PRP of OBD is such a large job that I anticipate none done through 2026. Probably longer. (If Mihai added sufficiently bigger fft lengths next month to gpuowl v7.x, it would take to about 2027 to complete OBD PRP / P1 combined on Radeon VII. And who would dedicate several years of a fast GPU to one PRP? Who would dedicate a powerful multicore CPU to Mlucas on OBD for decades?) Last fiddled with by kriesel on 20211105 at 02:35 

20211107, 03:47  #13  
Jun 2003
The Computer
110001111_{2} Posts 
Quote:
Luckily, we have some time to figure it out, and the mlucas benchmarking should help. As you've mentioned before, this work will likely aid in future programming efforts even if it is ruled that P1 and PRP should be done consecutively on one machine. 

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