[QUOTE=airsquirrels;442058]You must compile for the specific compute version and CUDA version of the card you are using. In this case the 8.0 RC and compute 6.1. Each generation of GPUs requires a separate build[/QUOTE]


can you please tell me how to do this for windows x64.

[QUOTE=KaptainBlaZzed;442079]can you please tell me how to do this for windows x64.[/QUOTE]

Unfortunately I do not have a windows environment setup so I don't have build instructions, however I also misspoke - I was thinking of CUDALucas not mfaktc. The same details apply, however with CUDA 8 RC 1 there exists a bug that prevents mfaktc from working properly. We believe it will be fixed in the final CUDA 8 release but we do not know when that will be.

[QUOTE=airsquirrels;442069]Some of the older cards/CUDA versions supported multiple compute versions and architectures, but Maxwell and Pascal both seem to required specific builds.[/QUOTE]

Maybe it is a difference with windows. I am pretty certain I have run toolkit v4 stuff on my Maxwell. I have certainly used the same binaries on a 8600GTS and 750Ti

[QUOTE=KaptainBlaZzed;442079]can you please tell me how to do this for windows x64.[/QUOTE]
I have not seen him post in a little while, but user 'flashjh' aka Jerry is a master of Windows compiles for different versions.

[QUOTE=kladner;442151]I have not seen him post in a little while, but user 'flashjh' aka Jerry is a master of Windows compiles for different versions.[/QUOTE]

Until NVIDIA fix their software...

[QUOTE=Gordon;442152]Until NVIDIA fix their software...[/QUOTE]
True dat.

[QUOTE=airsquirrels;442088] We believe it will be fixed in the final CUDA 8 release but we do not know when that will be.[/QUOTE]

Latest rumor is end of September, and as we all know, EVERYTHING you read on the internet is true, eh?

[QUOTE=tServo;442682]Latest rumor is end of September, and as we all know, EVERYTHING you read on the internet is true, eh?[/QUOTE]

Cuda 8 general availability announced today, Sept 28.

Good news!
 

[CODE]mfaktc v0.21 (64bit built)
[...]
CUDA version info
binary compiled for CUDA 8.0
CUDA runtime version 8.0
CUDA driver version 8.0

CUDA device info
name GeForce GTX 1080
compute capability 6.1
[...]

Selftest statistics
number of tests 26192
successfull tests 26192

kernel | success | fail
-------------------+---------+-------
UNKNOWN kernel | 0 | 0
71bit_mul24 | 2586 | 0
75bit_mul32 | 2682 | 0
95bit_mul32 | 2867 | 0
barrett76_mul32 | 1096 | 0
barrett77_mul32 | 1114 | 0
barrett79_mul32 | 1153 | 0
barrett87_mul32 | 1066 | 0
barrett88_mul32 | 1069 | 0
barrett92_mul32 | 1084 | 0
75bit_mul32_gs | 2420 | 0
95bit_mul32_gs | 2597 | 0
barrett76_mul32_gs | 1079 | 0
barrett77_mul32_gs | 1096 | 0
barrett79_mul32_gs | 1130 | 0
barrett87_mul32_gs | 1044 | 0
barrett88_mul32_gs | 1047 | 0
barrett92_mul32_gs | 1062 | 0

selftest PASSED!
[/CODE]

Reference (aka Founders Edition) 1080:
[CODE]Starting trial factoring M66362159 from 2^73 to 2^74 (28.83 GHz-days)
k_min = 71160531149400
k_max = 142321062305090
Using GPU kernel "barrett76_mul32_gs"
Date Time | class Pct | time ETA | [B][COLOR="Red"]GHz-d/day[/COLOR][/B] Sieve Wait
Sep 29 13:31 | 0 0.1% | 2.345 37m29s | [B][COLOR="Red"]1106.37[/COLOR][/B] 82485 n.a.%
Sep 29 13:31 | 4 0.2% | 2.345 37m27s | [B][COLOR="Red"]1106.37[/COLOR][/B] 82485 n.a.%
Sep 29 13:31 | 9 0.3% | 2.340 37m19s | [B][COLOR="Red"]1108.73[/COLOR][/B] 82485 n.a.%
[/CODE]

I guess we've a new performance and performance per watt leader.

Oliver

[QUOTE=TheJudger;443782][
I guess we've a new performance and performance per watt leader.

Oliver[/QUOTE]

Also, looks like they fixed their bugs that have been there since CUDA 7.0 & 7.5, yes?

Supposedly CUDA 8 has Visual Studio 2015 support, has anyone tried compiling mfaktc under Windows yet?

[QUOTE=tServo;443789]Also, looks like they fixed their bugs that have been there since CUDA 7.0 & 7.5, yes?[/QUOTE]

Yes:

[CODE] number of tests 26192
successfull tests 26192[/CODE]