mfakto: an OpenCL program for Mersenne prefactoring

[M344587487]

Is this the latest version of mfakto that should be used? https://github.com/Bdot42/mfakto

preda's repo is gone so I'm out of the loop.

[rebirther]

Originally Posted by M344587487

Is this the latest version of mfakto that should be used? https://github.com/Bdot42/mfakto

preda's repo is gone so I'm out of the loop.

Yes, it is.

[rebirther]

Here is an output file from an user with Intel ARC 770

[rebirther]

Originally Posted by 28add11

Well I ran --perftest and everything went fine, logs are attached. After that, thinking that it might've just fixed itself I ran mfakto aand it happened again. This time even with an error code!

Date    Time | class   Pct |   time     ETA | GHz-d/day    Sieve     Wait
Error -5 (Out of resources): clEnqueueReadBuffer RES failed.1206    0.00%
ERROR from tf_class.

Also I had notepad open, and it managed to turn the entire top bar black. ARC is fun.

How did you run a successful perftest? Did you change something?

[rebirther]

Originally Posted by rebirther

How did you run a successful perftest? Did you change something?

We got it running. Perftest was successful and a test run with worktodo.txt. The GPUtype must be changed to Intel in .ini file.

[James Heinrich]

Originally Posted by rebirther

We got it running. Perftest was successful and a test run with worktodo.txt. The GPUtype must be changed to Intel in .ini file.

I didn't see the results of your testrun in the attachment. I tried to extrapolate the needed numbers from what you did attach, but if you could submit a benchmark I would be very grateful.

[rebirther]

Originally Posted by James Heinrich

I didn't see the results of your testrun in the attachment. I tried to extrapolate the needed numbers from what you did attach, but if you could submit a benchmark I would be very grateful.

This was a local test, still need to setup the app.

Factor=3740120ADE828BE00071573643F00001,128002051,74,75

15min27s on INTEL ARC 770

[James Heinrich]

Originally Posted by rebirther

Factor=3740120ADE828BE00071573643F00001,128002051,74,75
15min27s on INTEL ARC 770

That gives a result 50% faster than what I saw in the perftest attachment...
When you're running, do see closer to 1800 or 2800 GHz-days/day?

A proper benchmark submission with all the requested fields would still be appreciated.

[rebirther]

Originally Posted by James Heinrich

That gives a result 50% faster than what I saw in the perftest attachment...
When you're running, do see closer to 1800 or 2800 GHz-days/day?

A proper benchmark submission with all the requested fields would still be appreciated.

This was a card from a user, Iam trying to find some results but no one has attached an Intel ARC host yet, still need some tweaking with the server setup.

[ixfd64]

Originally Posted by M344587487

Is this the latest version of mfakto that should be used? https://github.com/Bdot42/mfakto

preda's repo is gone so I'm out of the loop.

All the development is being done on the main repository now: https://github.com/Bdot42/mfakto

[Magellan3s]

I am getting the following error

g++ sieve.o timer.o parse.o read_config.o mfaktc.o checkpoint.o signal_handler.o filelocking.o output.o mfakto.o gpusieve.o perftest.o menu.o kbhit.o -m64  -O3 -funroll-loops  -ffast-math -finline-functions -frerun-loop-opt -fgcse-sm -fgcse-las -flto -L/opt/rocm/opencl/lib/x86_64 -lOpenCL -o ../mfakto
/usr/bin/ld: cannot find -lOpenCL
collect2: error: ld returned 1 exit status
make: *** [Makefile:94: ../mfakto] Error 1
jesus@Magellan:~/Mfacto/mfakto-master/src$