Posts by Jan Vaclavik
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1) Message boards : News : New CUDA application for Windows x64 Release (Message 6621)
Posted 28 Apr 2020 by Jan Vaclavik
Speaking of new applications, are there any plans for FMA app? Or AVX2 for that matter?
2) Message boards : Number crunching : please, remove non-optimized application for 32 bit systems (Message 6599)
Posted 25 Apr 2020 by Jan Vaclavik
Each time a new version of an app is released, the average flops is reset. This explains why many of the app have such low average flops.
The server should do better job checking for optimized apps, then again compared to x86_64 and CUDA, the 32bit is somewhat irrelevant.
3) Message boards : Problems and bug reports : When is Asteroids going to send avx WU's to all avx CPU's (Message 6556)
Posted 12 Apr 2020 by Jan Vaclavik
Since the Server Status doesn't show which kinds of units are available you could be getting what they have that works that also has the number of tasks you want instead of getting all they have all of one kind and then some of another kind, there's just no way to know that.

To be honest I thought the WUs are the same, just running in different apps - it is not unusual for the same WU to be computed by different apps.
Either way the W3680 not receiving SSE3 units is a long term issue of mine going months back. I could understand, if the project decided that the SSE2 runs better on the hardware than the SSE3, but how does it know, if it never tries?
4) Message boards : Problems and bug reports : When is Asteroids going to send avx WU's to all avx CPU's (Message 6554)
Posted 12 Apr 2020 by Jan Vaclavik
My W3680 only receives SSE2 uits, not a single SSE3 unit. My 1245v2 used to receive AVX all the time but now it started receiving SSE2 as well. Is there some way to encourage the project to send the correct type of work units?

Seems like the 1245v2 was just related to the release of the new app and the server is giving me AVX now.
The W3680 on the other hand received 8 WUs of the new app, but all SSE2. Could there be an issue detecting SSE3(PNI)?
5) Message boards : Number crunching : New plan_class versions (Message 6539)
Posted 4 Apr 2020 by Jan Vaclavik
With the new apps out, maybe the server tries to find out which one runs the best on your machines? I am getting mix of AVX, SSE2 and SSE3.
6) Message boards : Problems and bug reports : When is Asteroids going to send avx WU's to all avx CPU's (Message 6525)
Posted 1 Apr 2020 by Jan Vaclavik
My W3680 only receives SSE2 uits, not a single SSE3 unit. My 1245v2 used to receive AVX all the time but now it started receiving SSE2 as well. Is there some way to encourage the project to send the correct type of work units?
7) Message boards : Number crunching : CPU heat (temperature) (Message 2385)
Posted 7 Jan 2014 by Jan Vaclavik
The CPU should protect itself from overheating since like Pentium 4.
8) Message boards : News : New applications for GPU released (Message 2338)
Posted 31 Dec 2013 by Jan Vaclavik
So, admitting that a GPU uses more power than a CPU, that it takes same time to process, and it gives the same score... what's the point of using GPU? (and I'll use GPU for sure) Freeing the CPU to be used in other projects?
I think in its current state, the GPU app is aimed on fans of A@H, as it allows them to contribute their GPUs.
If you are contributing to multiple projects and some of them perform way better on GPUs compared to CPUs, you may want to keep your GPUs for those and CPUs for A@H.
You may very well ask why are some projects even supporting CPU apps.
9) Message boards : News : New applications for GPU released (Message 2326)
Posted 31 Dec 2013 by Jan Vaclavik
Well, I really don't know, what operating system runs on PS4 and XBOX, nor the hardware specification. But if there would be possibility to get linux on PS4 and XBOX, than it should be no problem ti compile application for it. But I don't have access to this hardware.
I was asking about native app.
I believe its custom hardware running custom OS. The hardware is nothing to write home about (2x4 Jaguar cores with beefed up GPU). While it wont get better over time like PCs, the installed base is going to increase.
I would only expect one of you guys to look into the thing if you already planned to pick on of the consoles for gaming purposes.
10) Message boards : News : New applications for GPU released (Message 2303)
Posted 30 Dec 2013 by Jan Vaclavik
Well, maybe its just me expecting too much performance from those mid-range cards.
I am usually using low-end or mid-range graphics cards, because of the lower price and reasonable power consumption, but while those are fine gaming-wise, I guess GPGPU shows their true colours.

Offtopic: Speaking of gaming, are there any long term plans to look at PS4 and XBO?
11) Message boards : News : New applications for GPU released (Message 2296)
Posted 30 Dec 2013 by Jan Vaclavik
Great news for the project, but to be honest I am somewhat disappointed by the performance of mid-range card. I guess I will be sticking around with my CPU somewhat longer...
12) Message boards : Number crunching : GPU and Asteroids@home (Message 2060)
Posted 18 Nov 2013 by Jan Vaclavik
Ok. So let's be honest... If we're porting asteroids to gpu, the only way to go is opencl! That will of course take into account that all nvidia gpus except the titan suck at DP...
You are porting asteroids to OpenCL?
Great, first the CUDA app by HA-Soft, now your OpenCL app...
13) Message boards : Number crunching : GPU and Asteroids@home (Message 2012)
Posted 4 Nov 2013 by Jan Vaclavik
Einstein, Albert, Poem, Seti ... there are multiple projects supporting AMD OpenCL cards.

I think the choice of CUDA over OpenCL may be about more the developers having existing experience with CUDA, more mature tools etc.
14) Message boards : Wish list : Support for OSX (Message 1989)
Posted 28 Oct 2013 by Jan Vaclavik
double post :(
15) Message boards : Wish list : Support for OSX (Message 1988)
Posted 28 Oct 2013 by Jan Vaclavik
AFAIK, the oldest x86 macs (no longer supported by Apple) were x86 + SSE3 (PNI) capable. Pretty much everything after that was x86-64 with Supplemental SSE3 and higher.
16) Message boards : News : New updated applications released (Message 1944)
Posted 15 Oct 2013 by Jan Vaclavik
"ChertseyAl" wrote:
Machine 'L' P4 XP32

v100.00 43956
v101.00 (sse2) 6054
v102.10 12853
v102.10 (sse2) 13650 SLOWER


Machine 'B' P4HT XP32

v100.00 48963
v101.00 (sse2) 9341
v102.10 18592
v102.10 (sse2) 18779 SLOWER


Basically, the new versions are at best no faster, and in 2 cases much slower.

It seems that this slower through hyper-threading. Limit the multicore utilization to 50% (one core).

More like some of those larger 240 credit WUs...
17) Message boards : News : New improved versions of SSE2 and SSE3 released (Message 1767)
Posted 16 Sep 2013 by Jan Vaclavik
778.5 min on 1.6 Ghz Intel "Atom N270", "Period Search Application v101.10" (no SSE) in AMAZING 2075 minutes.
(Does anyone from Asteroids-at-home have "INTEL C++ compiler / ICC ver.12" to make an Atom-SSE3 optimized version, please? I cannot find any up-to-date and optimized computations for my 2 Atom devices :) )
I don't know why, but my SSE3 PCs downloaded few vanilla units after the new app versions were released. I cancelled those units and the next batch was SSE2 or SSE3.
18) Message boards : News : New improved versions of SSE2 and SSE3 released (Message 1726)
Posted 9 Sep 2013 by Jan Vaclavik
The new apps seems faster on Pentium E2200 and about as fast as the "old" app on Athlon II 240.
19) Message boards : News : Server failures in last few days (Message 1699)
Posted 7 Sep 2013 by Jan Vaclavik
I got 56 tasks and 38 failed.
20) Message boards : News : New optimized versions for SSE3 released (Message 1622)
Posted 30 Aug 2013 by Jan Vaclavik
Is there some huge performance difference on certain CPUs between SSE2 and SSE3 versions?
Both run pretty much the same on my old Core 2 Duo, which makes the SSE3 version seem somewhat pointless.


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