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Search: Posts Made By: MrRepunit
Forum: GPU Computing 2021-12-27, 12:45
Replies: 41
Views: 29,076
Posted By MrRepunit
Here is the newest source code with included...

Here is the newest source code with included Linux 64 Bit binary, currently I cannot build a Windows binary. Not much has changed since last year, only the recent bugfix and some minor additional...
Forum: GPU Computing 2021-12-26, 21:53
Replies: 41
Views: 29,076
Posted By MrRepunit
I attached the executable for Linux 64 bit (CUDA...

I attached the executable for Linux 64 bit (CUDA 11.20).

$ ./gr-mfaktc.exe -tf 10000001 999431 1 60
mfaktc (generalized repunit edition) v0.21 (64bit built)
Compiled on Dec 25 2021
<snip>
CUDA...
Forum: GPU Computing 2021-12-25, 22:54
Replies: 41
Views: 29,076
Posted By MrRepunit
Okay, your example helped to understand what the...

Okay, your example helped to understand what the problem was:
There was a buffer overflow due to the too long checkpoint file name generated from the base and exponent. I fixed this, see attached...
Forum: GPU Computing 2021-12-24, 08:18
Replies: 41
Views: 29,076
Posted By MrRepunit
Hi, there is no quick way in doing so since the...

Hi,
there is no quick way in doing so since the fast GPU assembler routines are only using 32 bit integer multiplication. To extend this to 64 bit exponents one would have to rewrite all the...
Forum: GPU Computing 2020-09-20, 20:13
Replies: 41
Views: 29,076
Posted By MrRepunit
Good news, finally I was able to implement...

Good news, finally I was able to implement negative bases.
Also the problem with the 1660 card should be fixed now.
I attached the source code and 64 bit binaries for Linux and Windows.


As...
Forum: GPU Computing 2019-12-15, 00:15
Replies: 41
Views: 29,076
Posted By MrRepunit
Hi. Yes, I can do it if the wished-for changes...

Hi. Yes, I can do it if the wished-for changes are doable in some shorter time. My guess is that you want to lower the minimal exponent limit. Can do it, but than I cannot promise it still works in...
Forum: GPU Computing 2019-11-13, 20:44
Replies: 41
Views: 29,076
Posted By MrRepunit
Up to 2^64 the performance should be really good...

Up to 2^64 the performance should be really good because there is a special 64 bit GPU kernel. To get optimal performance you should disable the stages in mfaktc.ini:
Stages=0
If the desktop...
Forum: GPU Computing 2019-11-05, 21:22
Replies: 41
Views: 29,076
Posted By MrRepunit
The search boundaries are always a power of 2.

The search boundaries are always a power of 2.
Forum: GPU Computing 2019-11-03, 15:02
Replies: 41
Views: 29,076
Posted By MrRepunit
For now yes. At a later point I might create a...

For now yes. At a later point I might create a version that uses the original code path for Mersenne primes, probably once I have included negative bases...
Forum: GPU Computing 2019-11-03, 11:55
Replies: 41
Views: 29,076
Posted By MrRepunit
I figured out the symbols for bases 3, 5, 6, 7,...

I figured out the symbols for bases 3, 5, 6, 7, 8, 10, 11 and 12. All other bases are just testing all remaining possible numbers. Look for methods 'class_needed_<base>' in mfaktc.c. I can certainly...
Forum: GPU Computing 2019-11-03, 11:39
Replies: 41
Views: 29,076
Posted By MrRepunit
When I started the fork of mfaktc I was only...

When I started the fork of mfaktc I was only considering base 10 repunits, so I had to 'deoptimize' some code. I removed the Barrett kernels as they seemed unsuited to fit the base 10 and also more...
Forum: GPU Computing 2019-11-01, 21:54
Replies: 41
Views: 29,076
Posted By MrRepunit
Okay, so there seems to be pattern. Let's wait a...

Okay, so there seems to be pattern. Let's wait a bit, maybe we can isolate the issue with more feedback.
Forum: GPU Computing 2019-11-01, 20:30
Replies: 41
Views: 29,076
Posted By MrRepunit
What GPU do you use? On my own system (GeForce...

What GPU do you use? On my own system (GeForce GTX 1080, compute capability 6.1 & CUDA 10.1) it works without issues.
I know that a GTX 1660 was giving problems running the previous mfaktc-repunit...
Forum: GPU Computing 2019-10-31, 22:30
Replies: 41
Views: 29,076
Posted By MrRepunit
gr-mfaktc: a CUDA program for generalized repunits prefactoring

Hi,
finally I completed the generalized repunit version of mfaktc.

Changes compared to mfaktc-0.21:
- implemented factoring of generalized repunits
- Removed Barrett and 72 bit kernels
-...
Showing results 1 to 14 of 14

 
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