mmff.exe for tesla T4 GPU on windows server edition?

[Shen]

I rent a GPU T4 from cloud to run mmff.exe to trial factor MM127, but there is error as below:

CUDA version info
binary compiled for CUDA 6.0
CUDA runtime version 6.0
CUDA driver version 11.70

CUDA device info
name Tesla T4
compute capability 7.5
maximum threads per block 1024
number of mutliprocessors 40 (unknown number of shader cores)
clock rate 1590MHz

got assignment: k*2^197+1, k range 48595340000000 to 48595350000000 (243-bit factors)
Starting trial factoring of k*2^197+1 in k range: 48595340M to 48595350M (243-bit factors)
k_min = 48595340000000
k_max = 48595350000000
Using GPU kernel "mfaktc_barrett247_F192_223gs"
ERROR: Class problems. Factor divisible by 2, 3, 5, 7, or 11

the GPU can run mfaktc.exe properly, thus the GPU should be ok.
It might be that mmff.exe is not suitable for windows server edition.
How to solve the problem?

[kriesel]

I think you'll need a CUDA 10.x build of mmff for the CC 7.5 Tesla T4. https://en.wikipedia.org/wiki/CUDA#GPUs_supported and ideally it would have the 2047M GPUSieveSize modification for performance. I don't see a CUDA10 build at https://download.mersenne.ca/mmff
Try cuda 10.1 win64 https://mersenneforum.org/showpost.p...&postcount=370
cuda 10.1 win64 with 2047 GPUSieveSize https://mersenneforum.org/showpost.p...&postcount=371

[Shen]

Thanks.
I don't have a suitable tool to compile the original code, feel sad.

[kriesel]

Originally Posted by Shen

I don't have a suitable tool to compile the original code.

While it might be fun to build your own, you don't need to. Use one built by someone else.

[Shen]

Originally Posted by kriesel

I think you'll need a CUDA 10.x build of mmff for the CC 7.5 Tesla T4. https://en.wikipedia.org/wiki/CUDA#GPUs_supported and ideally it would have the 2047M GPUSieveSize modification for performance. I don't see a CUDA10 build at https://download.mersenne.ca/mmff
Try cuda 10.1 win64 https://mersenneforum.org/showpost.p...&postcount=370
cuda 10.1 win64 with 2047 GPUSieveSize https://mersenneforum.org/showpost.p...&postcount=371

the 370 links works well, but the https://mersenneforum.org/showpost.p...&postcount=371 has virus detected by windows.

[M344587487]

Is there a reason to use windows server and not Linux?

[Shen]

Originally Posted by Shen

the 370 links works well, but the https://mersenneforum.org/showpost.p...&postcount=371 has virus detected by windows.

It seem the virus come from Sagemath 9.3, it attcaked the mmff...zip.