Hi,

sorry if this is the wrong thread, Is the current version 28.6 supposed to work on "Intel E5-2630 v3 " machines?
If I run mprime -t I get "FATAL ERROR: Rounding was 0.5, expected less than 0.4".

"Optimizing for CPU architecture: Unknown Intel, L2 cache size: 256 KB, L3 cache size: 20 MB"

CPUs are choice for P-1 factoring over GPUs right? If so a 100M exponent P-1 job would be appreciated. I saw usage for one exponent being ~130GB for 1440 relative primes (I think). That'd allow the folks like me with more RAM to do meaningful work in P-1 if we have the RAM but not the cores.

[CODE]332225851 Factored 3240959103886636916852353
History
Date User Type Result
2015-06-18 aurashift F-PM1 Factor: 3240959103886636916852353 / (P-1, B1=3000000)[/CODE]
This also makes me sad on a worker that was meant for LL. When I converted to doing a 100M exponent on 12 cores down to two, most if not all of them still needed P-1 done.

[QUOTE=hokru;404254]Hi,

sorry if this is the wrong thread, Is the current version 28.6 supposed to work on "Intel E5-2630 v3 " machines?
If I run mprime -t I get "FATAL ERROR: Rounding was 0.5, expected less than 0.4".

"Optimizing for CPU architecture: Unknown Intel, L2 cache size: 256 KB, L3 cache size: 20 MB"[/QUOTE]

Yes that is one of the primary targets of Prime95. The test failing usually indicates some sort of hardware issue. Are you overclocking your CPU? Sufficient cooling? A bad memory stick perhaps?

I need next Prime95 configuration
First worker do first PRP
Second do second PRP
Last 3&4 worker do third PRP
Is that possible and if it is , what will be configuration?
Thanks for reply

Why can't I execute Prime95 in OS X Yosemite ?

[QUOTE=hokru;404254]Hi,

sorry if this is the wrong thread, Is the current version 28.6 supposed to work on "Intel E5-2630 v3 " machines?[/QUOTE]

+1

I've got some v3's and even though it detects AVX & AVX2 it still runs everything with FMA3

CPU Information:
Intel(R) Xeon(R) CPU E5-2698 v3 @ 2.30GHz
CPU speed: 2297.32 MHz, 16 hyperthreaded cores
CPU features: Prefetch, SSE, SSE2, SSE4, AVX, AVX2, FMA
L1 cache size: 32 KB
L2 cache size: 256 KB, L3 cache size: 40 MB

[Worker #2 Jul 19 21:48] Starting primality test of M74058203 using FMA3 FFT length 4M, Pass1=512, Pass2=8K, 15 threads

[QUOTE=aurashift;406159]

I've got some v3's and even though it detects AVX & AVX2 it still runs everything with FMA3[/QUOTE]

FMA3 is the latest, greatest, fastest FFTs available in prime95.

[QUOTE=Prime95;406172]FMA3 is the latest, greatest, fastest FFTs available in prime95.[/QUOTE]

oh.. OK I thought AVX/2 was faster.

On my Sandy Bridge Prime95 uses AVX FFT like it should but on the same computer with mprime inside a VMware linux 64bit installation it uses pentium4 FFT?

[QUOTE=ATH;406211]On my Sandy Bridge Prime95 uses AVX FFT like it should but on the same computer with mprime inside a VMware linux 64bit installation it uses pentium4 FFT?[/QUOTE]

Are you exposing the physical CPU attributes to the VM? vmware might be masking the CPUs capabilities.

One question for maker of Prime95 ( or anybody else who knows answer)
Lets say that I start Prime95 with 1 thread and three logical cores for PRP test. Then I shutdown Prime95 change from three to four ( and vice-versa) cores and resume computing: will that in any case make result non-confidient?