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Admiral Gloval
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Message 1670845 - Posted: 27 Apr 2015, 20:33:46 UTC - in response to Message 1670775.  
Last modified: 27 Apr 2015, 20:35:26 UTC

Gosh Admiral, I admire your patience and tenacity.
Don't think I could stay onboard, much less "laugh" with 169 hrs per task!
Fair winds and following seas, sir
;)

I do them 4 at a whack. I have 4 coming into their last 24 hour stretch. Then back to Seti very shorts.

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Message 1670898 - Posted: 27 Apr 2015, 22:27:12 UTC - in response to Message 1670845.  

So interesting. I suppose at 12,500+ credits/per x 4, it might be considered worth it; with a quad core, you're forced to suspend SETI then I presume.
It must be pretty intensive stuff. Do they even have GPU versions?
I noticed your OpenCL 2.0 spec in your Bonaire - I'd think that would enhance ops.

BTW have you tried/considered Lunatics at SETI? They sure have cut my runtimes down.

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Message 1670914 - Posted: 27 Apr 2015, 23:22:40 UTC - in response to Message 1670765.  

jbird i just looked at my results if your talking about the one AP that ran for 36,000 seconds that is a CPU units and they allways run about that long . I don't know much about what Instuction sets are in the AMD but even if they are using some Intel pieces then you can bet picking and choosing bits of code don't always work the way they think it will.

Someone said the FX is realy only a 4 core chip as it only has 1 mathcoproccesor or something like that .

When i bought it the box says 8 cores and 8 threads so if you have only used Intel you would think there is 16 cores that show up in your task man but with the FX chip you only get 8 not 16

so i Think AMD are playing with words here it's a 4 cored chip with hyperthread so you get 8 , but with copywright , patents and skit they can't have it the same as Intel.
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Message 1670919 - Posted: 27 Apr 2015, 23:28:32 UTC - in response to Message 1670914.  

To clarify, Intel's Hyperthreading makes one ALU/FPU pair appear to the OS and all software as two ALUs and FPUs.

AMD's chips pair two ALUs with a single FPU. So if an AMD FX chip says it is 8 cores, it has 4 FPUs - but that's only for recent models. Phenom II and older chips all have a 1:1 ratio of ALU to FPU.

In most cases, the reduced FPU count doesn't affect much. But for math intensive programs like SETI crunching, it does hamper processing just a bit. However, with the CPU acting as nothing more than a feeder for powerful GPUs these days, it doesn't really seem to matter much even then.
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Message 1670922 - Posted: 27 Apr 2015, 23:33:19 UTC

Jbird i run 1 units per Cpu core and depending weather it a AP or MB units i have i use 7 Cpu cores for MB's and 4 for AP's

The GPU's do 2 units per GPU no matter weather there MB or AP

i have a RAC of approx 25-30,000 doing just AP's
and a RAC of approx 15-18,000 doing just MB

When doing AP's on the GPU's i only use 4 of the CPU cores there by leaving 4 cores to feed the 4 units being done on the GPU's

With the never version of the Seti Client i can leave only 2 CPU cores free to feed the GPU's however i have not run it long enough in that confog to get a good idea weather it's worth it
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Message 1670943 - Posted: 28 Apr 2015, 1:17:02 UTC - in response to Message 1670914.  

Stderr from the task
=
Build features: Non-graphics BLANKIT TWINDECHIRP USE_LRINT FFTW USE_INCREASED_PRECISION USE_AVX x64
CPUID: AMD FX(tm)-8350 Eight-Core Processor

Cache: L1=64K L2=2048K

CPU features: FPU TSC PAE CMPXCHG8B APIC SYSENTER MTRR CMOV/CCMP MMX FXSAVE/FXRSTOR SSE SSE2 HT SSE3 SSSE3 FMA3 SSE4.1 SSE4.2 AVX SSE4A XOP FMA4
=
Your chip is definitely a true 8 core with 8 Threads and AVX x64 (bit)
=
Intel getting ready to launch it's first true 8 core and they're $1000 bucks!
Up til now their 8 core "rated" CPU only had 4 cores +4 logical

I'd sure look into a cmdline for CPU APs - bet it would cut runtime in half

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Admiral Gloval
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Message 1670977 - Posted: 28 Apr 2015, 2:54:15 UTC - in response to Message 1670898.  

So interesting. I suppose at 12,500+ credits/per x 4, it might be considered worth it; with a quad core, you're forced to suspend SETI then I presume.
It must be pretty intensive stuff. Do they even have GPU versions?
I noticed your OpenCL 2.0 spec in your Bonaire - I'd think that would enhance ops.

BTW have you tried/considered Lunatics at SETI? They sure have cut my runtimes down.

A couple of versions ago. I was running both at the same time. I was letting boinc handle the time sharing management. It would go between projects running one then switch to the other giving it CPU time. Right now after I installed the GPU. It is running SETI GPU MB wu on the GPU and Climate Prediction on the CPU.
Don't know if they have GPU versions of Climate Prediction.
As for Lunatics. I'm scratching my head. Not sure how and where to go with it.

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Message 1670980 - Posted: 28 Apr 2015, 3:05:39 UTC - in response to Message 1670943.  

I'd sure look into a cmdline for CPU APs - bet it would cut runtime in half


I'm happy it's plenty fast enough . Command line versions mmmmm I'm a bit lazy . If i kick the other machine on it will give me another 8,000 + to the Rac but at 6 mill i'm happy
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Message 1670983 - Posted: 28 Apr 2015, 3:18:58 UTC - in response to Message 1670943.  

Stderr from the task
=
Build features: Non-graphics BLANKIT TWINDECHIRP USE_LRINT FFTW USE_INCREASED_PRECISION USE_AVX x64
CPUID: AMD FX(tm)-8350 Eight-Core Processor


At the moment I am doing mainly MB's so i have it set to use 7 of the 8 cores . While still doing 4 units on the GPU a total of 11 units .

This unit was probably being done with these settings . When doing Ap's i can not have this many Cpu cores working i would need to drop it to 6 Cpu cores and i probably didn't

When they finally get around to fixing the Ap data base and there are more units i'll change it to only Ap's.

I'm doing something else as well
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Message 1671283 - Posted: 28 Apr 2015, 23:39:23 UTC - in response to Message 1670943.  

CPU features: FPU TSC PAE CMPXCHG8B APIC SYSENTER MTRR CMOV/CCMP MMX FXSAVE/FXRSTOR SSE SSE2 HT SSE3 SSSE3 FMA3 SSE4.1 SSE4.2 AVX SSE4A XOP FMA4
=
Your chip is definitely a true 8 core with 8 Threads and AVX x64 (bit)
=
Intel getting ready to launch it's first true 8 core and they're $1000 bucks!
Up til now their 8 core "rated" CPU only had 4 cores +4 logical


Be careful with the wording there. The part where it says "Your chip is definitely a true 8 core with 8 threads..." is in reference to not using virtual cores with Hyperthreading. Your AMD FX83xx series CPU still has only 4 FPU "cores" - each ALU shares an FPU.

And while that chip may be cheaper than the Intels, you're paying more per watt over the course of a year due to higher electricity usage.

Mind you, I'm just giving you the facts. I'm not an Intel or AMD fanboy (even though I currently use mostly Intel). I'm just a general nerd for the entire x86 market. :-)
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Message 1671327 - Posted: 29 Apr 2015, 4:11:11 UTC - in response to Message 1671283.  
Last modified: 29 Apr 2015, 4:22:05 UTC

CPU features: FPU TSC PAE CMPXCHG8B APIC SYSENTER MTRR CMOV/CCMP MMX FXSAVE/FXRSTOR SSE SSE2 HT SSE3 SSSE3 FMA3 SSE4.1 SSE4.2 AVX SSE4A XOP FMA4
=
Your chip is definitely a true 8 core with 8 Threads and AVX x64 (bit)
=
Intel getting ready to launch it's first true 8 core and they're $1000 bucks!
Up til now their 8 core "rated" CPU only had 4 cores +4 logical


Be careful with the wording there. The part where it says "Your chip is definitely a true 8 core with 8 threads..." is in reference to not using virtual cores with Hyperthreading. Your AMD FX83xx series CPU still has only 4 FPU "cores" - each ALU shares an FPU.

And while that chip may be cheaper than the Intels, you're paying more per watt over the course of a year due to higher electricity usage.

Mind you, I'm just giving you the facts. I'm not an Intel or AMD fanboy (even though I currently use mostly Intel). I'm just a general nerd for the entire x86 market. :-)

I would also point out Intel has been selling CPUs with 8c/16t since 2010 & the 8c/8t Atom was released in 2013 for < $200.
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Message 1671531 - Posted: 29 Apr 2015, 16:36:50 UTC - in response to Message 1671327.  
Last modified: 29 Apr 2015, 17:31:52 UTC

Apologies! I stand corrected/modified.
And thanks for the comparative details/definitions.
Meant no harm. Live and learn!
I did parrot the "...first true 8 core/$1000..." piece from an ad at Newegg, whilst shopping for my own next upgrades, recently :
=
Codename: Haswell-E
First Intel 8-Core Desktop Processor
New Intel® Core™ i7 Processors on LGA 2011-v3 socket
Support for 8-core and 6-core options
New Intel® X99 Chipset with upgraded I/O capabilities
First desktop platform to support DDR4 memory

Ultimate Platform for Multi-Thread Computing
Up to 79% more multi-thread performance1over 4 Core Platform
Massive 16-thread performance and quad-channel memory for content creation and multi-tasking
=
The "virtual" stuff that exists in the wafer world via lithography is just a boggle to me. Just tryin to keep up!
=
"I'm just a general nerd for the entire x86 market. :-)"
Ya me too! @ OzzFan
=
And - "I would also point out Intel has been selling CPUs with 8c/16t since 2010 & the 8c/8t Atom was released in 2013 for < $200."
Surely, the 8c/16t isn't a mainstream, consumer "Desktop processor" you refer to HAL -- ie mebe a Server class or CAD Workstation Xeon product?

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Message boards : Number crunching : Head scratcher_estimate clock on this


 
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