Quote from: Jean_Luc on Today at 07:22:44 AM

I checked on #125 with a RTX 4500 and a A100 (the H100 is not yet available).
The needed time evolve linearly with the number of board and you have to multiply by sqrt(32) for #130
So ~1 year to solve #130 with ~1000 RTX 4500 using this program with the required mods.

Kangaroo v2.2
Start:10000000000000000000000000000000
Stop :1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Keys :1
Number of CPU thread: 0
Range width: 2^124
Jump Avg distance: 2^62.04
Number of kangaroos: 2^20.81
Suggested DP: 38
Expected operations: 2^63.10
Expected RAM: 1387.8MB
DP size: 38 [0xfffffffffc000000]
GPU: GPU #0 NVIDIA RTX A4500 (56x0 cores) Grid(112x128) (147.0 MB used)
SolveKeyGPU Thread GPU#0: creating kangaroos...
SolveKeyGPU Thread GPU#0: 2^20.81 kangaroos [9.9s]
[1514.20 MK/s][GPU 1514.20 MK/s][Count 2^34.77][Dead 0][22s (Avg 207.606y)][2.0/4.0MB]

Kangaroo v2.2
Start:10000000000000000000000000000000
Stop :1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Keys :1
Number of CPU thread: 0
Range width: 2^124
Jump Avg distance: 2^62.04
Number of kangaroos: 2^21.75
Suggested DP: 37
Expected operations: 2^63.10
Expected RAM: 2760.3MB
DP size: 37 [0xfffffffff8000000]
GPU: GPU #0 NVIDIA A100-PCIE-40GB (108x0 cores) Grid(216x128) (277.0 MB used)
SolveKeyGPU Thread GPU#0: creating kangaroos...
SolveKeyGPU Thread GPU#0: 2^21.75 kangaroos [22.7s]
[3824.79 MK/s][GPU 3824.79 MK/s][Count 2^33.84][Dead 0][06s (Avg 82.0929y)][2.0/4.0MB]

---------

With a H100 (PCIe) (on #130)

Kangaroo v2.2
Start:200000000000000000000000000000000
Stop :3FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Keys :1
Number of CPU thread: 0
Range width: 2^129
Jump Avg distance: 2^64.01
Number of kangaroos: 2^21.83
Suggested DP: 40
Expected operations: 2^65.62
Expected RAM: 1985.4MB
DP size: 40 [0xffffffffff000000]
GPU: GPU #0 NVIDIA H100 PCIe (114x0 cores) Grid(228x128) (292.0 MB used)
SolveKeyGPU Thread GPU#0: creating kangaroos...
SolveKeyGPU Thread GPU#0: 2^21.83 kangaroos [23.3s]
[5113.99 MK/s][GPU 5113.99 MK/s][Count 2^34.26][Dead 0][06s (Avg 352.678y)][2.0/4.0MB]

You can find the cotation of the hypervisors we use for scientific calculation there (page 12 of my presentation):
https://indico.esrf.fr/event/93/contributions/559/

Are you going to modify the code to be able to search the 130 bit? There is a new NVIDIA GPU that was announced, the GB200 which is exponentially more powerful than the current gpus.