Thread: GpuOwl 7.x
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Old 2020-11-22, 08:44   #176
Viliam Furik
 
"Viliam Furík"
Jul 2018
Martin, Slovakia

6768 Posts
Default Big slowdown

I have downloaded the version 7.2-13-g266aed4, and when I run a 108M test, it runs at 1250 us/it. The same test runs at 920 us/it when using v6.11-380-g79ea0cc.

I have also noticed it's not saying anything about the duration of the GEC, but I hope it is doing it.

While writing, I have noticed it looks like it's doing P-1 on a different FFT size, is that possible?

Code:
2020-11-22 09:39:53 GpuOwl VERSION v7.2-13-g266aed4
2020-11-22 09:39:53 config: -device 1
2020-11-22 09:39:53 config: -proof 8
2020-11-22 09:39:53 config: -nospin
2020-11-22 09:39:53 device 1, unique id ''
2020-11-22 09:39:53 gfx906-1 108850051 FFT: 6M 1K:12:256 (17.30 bpw)
2020-11-22 09:39:53 gfx906-1 108850051 OpenCL args "-DEXP=108850051u -DWIDTH=1024u -DSMALL_HEIGHT=256u -DMIDDLE=12u -DAMDGPU=1 -DWEIGHT_STEP_MINUS_1=0.62309825525553619 -DIWEIGHT_STEP_MINUS_1=-0.3838943534305243 -DIWEIGHTS={0,-0.3838943534305243,-0.24082766453041662,-0.064539274795706897,-0.42365736505765839,-0.28982409650658664,-0.12491323160025802,-0.46085410075068395,-0.33565833429543745,-0.18139069701609609,-0.49565018609731404,-0.37853446361658188,-0.23422314777169634,-0.056401114659886273,-0.41864339864529271,-0.28364583046985026,}  -cl-std=CL2.0 -cl-finite-math-only "
2020-11-22 09:39:54 gfx906-1 108850051 ASM compilation failed, retrying compilation using NO_ASM
2020-11-22 09:39:58 gfx906-1 108850051 OpenCL compilation in 4.79 s
2020-11-22 09:39:58 gfx906-1 108850051 maxAlloc: 0.0 GB
2020-11-22 09:39:58 gfx906-1 108850051 You should use -maxAlloc if your GPU has more than 4GB memory. See help '-h'
2020-11-22 09:39:58 gfx906-1 108850051 P1(5.5M) 7935851 bits
2020-11-22 09:39:58 gfx906-1 108850051 PRP starting from beginning
2020-11-22 09:39:59 gfx906-1 108850051 Acquired memory lock 'memlock-1'
2020-11-22 09:39:59 gfx906-1 108850051 P1(5.5M) using 112 buffers
2020-11-22 09:40:02 gfx906-1 108850051 OK         0 on-load: blockSize 400, 0000000000000003
2020-11-22 09:40:02 gfx906-1 108850051 validating proof residues for power 8
2020-11-22 09:40:02 gfx906-1 108850051 Proof using power 8
2020-11-22 09:40:15 gfx906-1 108850051        10000   0.01% a834a715c12eb82f 1248 us/it
2020-11-22 09:40:27 gfx906-1 108850051        20000   0.02% 399d28f60cdc9b8e 1251 us/it
2020-11-22 09:40:35 gfx906-1 108850051 Stopping, please wait..
2020-11-22 09:40:36 gfx906-1 108850051 OK     26000   0.02% 64247ab7a49860c3 1251 us/it + check 0.51s + save 0.75s; ETA 1d 13:48 | P1(5.5M) 0.3% ETA 02:45 5b28693878aaf77c
2020-11-22 09:40:36 gfx906-1 108850051 P1(5.5M) releasing 112 buffers
2020-11-22 09:40:36 gfx906-1 108850051 Released memory lock 'memlock-1'
2020-11-22 09:40:36 gfx906-1 Exiting because "stop requested"
2020-11-22 09:40:36 gfx906-1 Bye
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