KataGo V1.5

[RobertJasiek]

6 core CPU and 33% under load.

Thanks. I have got another question on your 2 graphics cards:

Do they run on PCIe 3.0 each at x8?

Now, PCIe 4.0 is available but I cannot find a motherboard with dual x16 (for both graphics cards). Do CPUs not support enough lanes yet?

[goame]

6 core CPU and 33% under load.

Thanks. I have got another question on your 2 graphics cards:

Do they run on PCIe 3.0 each at x8?

Now, PCIe 4.0 is available but I cannot find a motherboard with dual x16 (for both graphics cards). Do CPUs not support enough lanes yet?

I'm using this one: https://www.amazon.de/X79A-GD45-Mainboa ... B00704JT42

[RobertJasiek]

The MSI webpage does not clarify. According to the manual of your motherboard, slots 1 and 4 support up to PCIe 3.0 x16 and allow SLI. The manual is not explicit about speed in the case of dual use. Implicitly, it suggests x16 for each because slot 4 is not used in single use but allows up to x16, which only could occur in multiple use. The motherboard is for 2nd generation Core i, for which the best CPUs provide 40 lanes, like nowadays I think. Since some lanes are used for storage and ports, I guess that the actual dual use speed is x8 or x16 + x8.

[RobertJasiek]

I looked for a too low hanging fruit;) Gigabyte X299X AORUS XTREME WATERFORCE is some motherboard running up to 3 cards each at x16...! The socket is LGA2066, a typical CPU is Core i9-10980XE for a modest €1.000 and TDP 165W. Ok, so in principle it is possible. For more realistic options, one must search more extensively or compromise on 2x PCIe 4.0 x8 speed, losing something between 0% and 20% application speed?

[RobertJasiek]

your motherboard [...] CPUs provide 40 lanes

Meanwhile I have learned that chipsets can provide additional PCIe lanes so your motherboard might indeed have 2x PCI 3.0 x16.

[go4thewin]

kata 1.61 s509 40b 1 thread 9 po vs gtp4zen 9d zen7

4:0

9 playouts > 9 dan gtp4zen nice!

attached 1 sgf (1.sgf)
edit: also 4-0 at 6 playouts but didnt include sgfs, attached two-gtp screenshot

Screenshot_20201101-131820.png (524.88 KiB) Viewed 7061 times

6b 1 playout 1 thread vs gnugo 3.8 default settings (level 10?) 12-0
6b 1 playout vs zen 6 (real program, not gtp4zen) 3k 1-0 as black.

6b1poVSzen63k.sgf

(957 Bytes) Downloaded 389 times

was not very close the 6b policy can probably beat zen6 at a higher level. I was really surprised, I respect zen 6 strength alot.