Forum: GPU Computing
2021-01-17, 16:42
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Replies: 21
Views: 510
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Forum: Hardware
2021-01-05, 10:12
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Replies: 124
Views: 7,566
The cache (L1/L2/L3) is used transparently for...
The cache (L1/L2/L3) is used transparently for the *global* memory operations. It is managed automatically by the cache control (probably a variant of LRU), not explicitly by the software. So yes,...
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Forum: GpuOwl
2020-12-13, 04:31
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Replies: 195
Views: 12,052
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Forum: GpuOwl
2020-12-06, 22:58
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Replies: 2,686
Views: 200,265
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Forum: Hardware
2020-12-06, 22:54
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Replies: 12
Views: 770
Hardware donation and possible meet-ups
I may have some extra hardware located in Sydney (Australia), I'm considering donating it based on GIMPS participation. Is somebody [else] from the forum living in Sydney?
Now that I think of it,...
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Forum: GpuOwl
2020-12-01, 23:42
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Replies: 2,686
Views: 200,265
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Forum: GpuOwl
2020-11-24, 21:38
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Replies: 195
Views: 12,052
"has slowed down" -- relative to what? did you...
"has slowed down" -- relative to what? did you compare two versions, to see what is the difference between them? Let's call the two versions you compare "before" and "after", or "good" and "bad"....
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Forum: GpuOwl
2020-11-23, 22:23
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Replies: 195
Views: 12,052
No that is not possible with the current...
No that is not possible with the current savefiles, they are most probably different between GpuOwl and mprime.
OTOH mprime may be offering the merged PRP+P1 at some point in the future.
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Forum: GpuOwl
2020-11-23, 09:53
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Replies: 195
Views: 12,052
Interesting. I haven't tried FFT 6M myself yet...
Interesting. I haven't tried FFT 6M myself yet (I'm still on 5.5M), I probably should.
- time helps a bit with timing the kernels. Sometimes running with -time old/new and comparing may provide a...
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Forum: GpuOwl
2020-11-23, 02:58
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Replies: 195
Views: 12,052
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Forum: GpuOwl
2020-11-13, 22:57
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Replies: 2,686
Views: 200,265
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Forum: GpuOwl
2020-11-13, 20:10
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Replies: 2,686
Views: 200,265
It is simply misreporting from GpuOwl: when it...
It is simply misreporting from GpuOwl: when it finds a P-1 factor, the part that writes the result doesn't know anymore whether it was found in stage1 or in stage2. It could write the result with...
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Forum: GpuOwl
2020-11-12, 21:54
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Replies: 195
Views: 12,052
I think ROCm 3.3 is good. Also any after 3.5...
I think ROCm 3.3 is good. Also any after 3.5 should work fine, but maybe slower than 3.3. You can try, now it's easier to install multiple versions of ROCm OpenCL in parallel (at the same time) and...
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Forum: Math
2020-11-11, 00:06
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Replies: 14
Views: 534
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Forum: Math
2020-11-10, 23:33
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Replies: 14
Views: 534
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Forum: GpuOwl
2020-11-10, 22:48
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Replies: 2,686
Views: 200,265
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Forum: Math
2020-11-10, 22:44
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Replies: 14
Views: 534
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Forum: Math
2020-11-10, 22:21
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Replies: 14
Views: 534
Inverse of a particular matrix
I have a very special matrix, square n*n, where the lines 0..(n-1) are:
line(i)={1/(i+1), 1/(i+2), ... , 1/(i+n)}
for example, for n==2:
1 1/2
1/2 1/3
for n==3:
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Forum: GpuOwl
2020-11-07, 07:04
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Replies: 2
Views: 257
One problem is that gpuowl.cl is very heavily...
One problem is that gpuowl.cl is very heavily optimized for the "-1" case -- the weighting/unweighting. A lot of tricks have been applied in that area. To change, a logical approach would be to...
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Forum: GpuOwl
2020-11-04, 22:11
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Replies: 195
Views: 12,052
The version is this info that is printed by...
The version is this info that is printed by GpuOwl on every run, including "-h". It allows to track down exactly which changes are included and which are not.
GpuOwl VERSION v7.2-13-g266aed4
...
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Forum: GpuOwl
2020-11-04, 22:03
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Replies: 195
Views: 12,052
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Forum: GpuOwl
2020-11-04, 20:28
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Replies: 195
Views: 12,052
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Forum: GpuOwl
2020-11-03, 10:58
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Replies: 195
Views: 12,052
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Forum: GpuOwl
2020-11-03, 10:34
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Replies: 195
Views: 12,052
Try increasing the FFT size, changing the FFT...
Try increasing the FFT size, changing the FFT variant, or otherwise fiddling with FFT precision settings. Let us know how it goes.
EDIT: I tried your exponent, with a similar setup (see below) --...
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Forum: GpuOwl
2020-11-03, 07:53
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Replies: 195
Views: 12,052
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