Forum: Mlucas
2021-01-22, 20:45
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Replies: 81
Views: 17,813
@tdulcet - yes, off-by-one indexing error is...
@tdulcet - yes, off-by-one indexing error is precisely what it is - good catch. At line 3595 of the v19.1 Mlucas.c I posted above, that "radset = i" needs to be changed to "radset = i-1" to undo the...
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Forum: Mlucas
2021-01-20, 20:21
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Replies: 81
Views: 17,813
Hi, Joniano -
Yep, that's a weird one -...
Hi, Joniano -
Yep, that's a weird one - the timings in the "clocks = ... [msec/iter]" part of each 10Kiter checkpoint-status line look perfectly reasonably for a Pi4, around 15 minutes per...
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Forum: Mlucas
2021-01-20, 19:56
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Replies: 81
Views: 17,813
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Forum: Mlucas
2021-01-19, 20:19
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Replies: 81
Views: 17,813
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Forum: Mlucas
2021-01-18, 20:49
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Replies: 81
Views: 17,813
@tdulcet - How about I add support in v19.1 for...
@tdulcet - How about I add support in v19.1 for the -radset flag to take either an index into the big table, or an actual set of comma-separated FFT radices? Shouldn't be difficult - if the expected...
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Forum: Mlucas
2021-01-16, 22:23
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Replies: 81
Views: 17,813
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Forum: Mlucas
2021-01-16, 21:06
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Replies: 81
Views: 17,813
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Forum: Mlucas
2021-01-14, 00:09
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Replies: 81
Views: 17,813
-DUSE_THREADS is needed to enable multithreaded...
-DUSE_THREADS is needed to enable multithreaded build mode; without it you get a single-threaded build, which would only be useful if all you ever wanted to do is run one such 1-thread job per core....
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Forum: Mlucas
2021-01-12, 21:02
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Replies: 81
Views: 17,813
@pvn:
The self-tests are intended to do two...
@pvn:
The self-tests are intended to do two things:
[1] Check correctness of the compiled code;
[2] Find the best-performing combination of radices for each FFT length on the user's...
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Forum: Hardware
2020-12-30, 06:22
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Replies: 156
Views: 22,583
Interesting, but ugh - that kind of...
Interesting, but ugh - that kind of nonportability is only worth it if it offers huge performance benefits for one's application.
Brief update re. Mlucas-on-M1: Laurent Desnogues has a...
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Forum: Hardware
2020-12-23, 20:03
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Replies: 156
Views: 22,583
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Forum: GpuOwl
2020-12-23, 19:49
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Replies: 2,686
Views: 200,465
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Forum: Math
2020-12-15, 23:30
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Replies: 16
Views: 600
@OP: Suggest you try a tiny M(p) example: n =...
@OP: Suggest you try a tiny M(p) example: n = M(11) = 2^11-1 = 23*89. The 2 prime factors have p-1 decompositions:
p = 23: p-1 = 2*11
q = 89: q-1 = 2^3*11
So taking E = 2*11 in p-1 stage 1...
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Forum: Mlucas
2020-12-11, 21:41
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Replies: 81
Views: 17,813
@pvn: Sorry for belated reply - that warning...
@pvn: Sorry for belated reply - that warning message is more common for larger threadcounts, it's basically telling you that part of the FFT code needs the leading (leftmost in the "Using complex FFT...
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Forum: Hardware
2020-12-02, 20:33
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Replies: 149
Views: 11,693
Just did a reboot and had a look at the CPU...
Just did a reboot and had a look at the CPU Configuration menu in the BIOs:
o CPU freq = 1.4GHz and not BIOS-adjustable (nor the min.max ratios), L1 = 4352KB (4.25MB), L2 = 34816KB (34MB),
o...
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Forum: Hardware
2020-12-02, 03:38
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Replies: 149
Views: 11,693
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Forum: Hardware
2020-12-01, 22:29
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Replies: 149
Views: 11,693
From the mobo manual, I've bolded the relevant...
From the mobo manual, I've bolded the relevant snip:
"Memory Frequency
Use this feature to set the maximum memory frequency for onboard memory modules. The options are Auto, 1600, 1867, 2133, and...
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Forum: Hardware
2020-12-01, 20:32
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Replies: 21
Views: 1,810
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Forum: Hardware
2020-12-01, 20:20
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Replies: 149
Views: 11,693
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Forum: Hardware
2020-11-30, 22:11
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Replies: 149
Views: 11,693
I found some useful perforated-metal-sheet...
I found some useful perforated-metal-sheet product listings here (https://www.amazon.com/Perforated-Metal-Sheets/s?k=Perforated+Metal+Sheets), but those are building-supply-oriented, few fine-mesh...
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Forum: Hardware
2020-11-30, 20:00
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Replies: 149
Views: 11,693
Yeah, that was a rather shoddy job w.r.to PSU...
Yeah, that was a rather shoddy job w.r.to PSU securement. Does your system also have the power plug which likes to disconnect at the slightest jiggling of the case?
It will support both - as I...
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Forum: Hardware
2020-11-29, 23:22
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Replies: 149
Views: 11,693
Spoke too soon - I neglected to mention that...
Spoke too soon - I neglected to mention that temperature was with the case side panel on the CPU side of the mobo removed - I put the panel back on last night and the temp quickly rose by over 10C...
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Forum: Hardware
2020-11-29, 23:20
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Replies: 149
Views: 11,693
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Forum: Hardware
2020-11-29, 21:00
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Replies: 21
Views: 1,810
Laurent PMed me results of a clang/llvm Mlucas...
Laurent PMed me results of a clang/llvm Mlucas build attempt. Most of the source files compiled fine, but there is a subset which failed, all due to clang reporting "error: inline assembly requires...
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Forum: Hardware
2020-11-28, 03:17
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Replies: 149
Views: 11,693
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