D40 Observation Thread

Lexx-r and Vicont
Lexx-r and Vicont
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Athlon XP 2600+ resalts S39L

Message 26797 in response to message 26792

Athlon XP 2600+
resalts S39L (only 2) - 4578.95, 5131.28
resalts D40 (first 2) - 4281.70 (S39L 65%, D40-35%), 4139.52

D40 faster S39L 12 % (+-7%)

I'am like D40 :)

Kerwin
Kerwin
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Akosf, do you know if your

Akosf, do you know if your D40 optimizations will make it into the next official Einstein application?

Akos Fekete
Akos Fekete
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RE: Akosf, do you know if

Message 26799 in response to message 26798

Quote:
Akosf, do you know if your D40 optimizations will make it into the next official Einstein application?

I'm waiting for the new official client, but as far as I know, it will not consist the "combined precision" part like as [S38,S39,S39L,D40].

LiborA
LiborA
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RE: RE: Akosf, do you

Message 26800 in response to message 26799

Quote:
Quote:
Akosf, do you know if your D40 optimizations will make it into the next official Einstein application?
I'm waiting for the new official client, but as far as I know, it will not consist the "combined precision" part like as [S38,S39,S39L,D40].


To Akosf: Will be S40 in short time or you wait for the new afficial app and S40 will after?

Akos Fekete
Akos Fekete
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RE: Will be S40 in short

Message 26801 in response to message 26800

Quote:
Will be S40 in short time or you wait for the new afficial app and S40 will after?

Well I have lot of ideas to optimise a code, but the main optimisations are done. I would like to try out some new other tricks (I do it for fun), but it goes slowly because I have lot of work (current company) and lot of other task (own company). Probably I will release an S40 code but it will not faster than S39L. The S40 will have higher code density. It's good for power consumption but doesn't mean higher speed. It's funny, isn't it?
The source level optimisations would be much more lucky, that means more and easier possibilities.

J Langley
J Langley
Joined: 30 Dec 05
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Well this is weird - everyone

Message 26802 in response to message 26801

Well this is weird - everyone else with 3DNow! seems to be going faster under D40 than S39L, but I appear to be going slower. I know the WU size varies, but effect seems to be about 10% slower under D40 than S39L.

S39L results: 4047 3926 3908 3824 3916 3997 3905 3892 3917 4076
S39L / D40 mixed WU result: 3906
D40 results: 4347 4225 4318 4107 4010

My processor is an Athlon XP 2800+ (Barton core: 512k L2 cache @ 2.08GHz MMX(+) 3DNow!(+) SSE)

Should I switch back to S39L, or wait a few more WUs to see what happens?

archae86
archae86
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RE: Well this is weird -

Message 26803 in response to message 26802

Quote:

Well this is weird - everyone else with 3DNow! seems to be going faster under D40 than S39L, but I appear to be going slower. I know the WU size varies, but effect seems to be about 10% slower under D40 than S39L.

S39L results: 4047 3926 3908 3824 3916 3997 3905 3892 3917 4076
S39L / D40 mixed WU result: 3906
D40 results: 4347 4225 4318 4107 4010

My processor is an Athlon XP 2800+ (Barton core: 512k L2 cache @ 2.08GHz MMX(+) 3DNow!(+) SSE)

Should I switch back to S39L, or wait a few more WUs to see what happens?

Your results are not all from the same major datafile. The three slowest D-40 results are 1447.5, the next faster from 0784.0, and the fastest one so far from 1058.5.

I'm pretty sure I've seen appreciable offsets for compact sets from different major datafiles, and certainly seen drift and the occasional blip even in the same.

Folks confidently reported differences down in the few percent range are being optimistic.

I've noticed that the server is much less likely to keep giving me results form the same major datafile than it was just a few weeks ago. Back then it would go weeks at a time, while now all four of my machines have process results from more than one datafile in the last week.

J Langley
J Langley
Joined: 30 Dec 05
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Okay thanks. I'll wait for a

Message 26804 in response to message 26803

Okay thanks. I'll wait for a good few more WUs and see what happens.

If the difference had been less than 5% I wouldn't have queried it; and since my fastest D40 result is faster than my slowest S39L, maybe D40 is still the best for me to use.

I'm certainly doing better than a few months ago when I was running the standard app and had accidentally underclocked my CPU by nearly half (the FSB got dropped to the lowest possible setting when I flashed the BIOS to fix another problem). Back then WUs were taking 24000!

DanNeely
DanNeely
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There's enough variance that

There's enough variance that you really need about 4 of 5 dozen to be sure if the gain's really small. I did a hardware upgrade and bumped my CPU up 200mhz before the switchover, but after adjusting for the CPU speedup I'm finding that while thier ranges do overlap slightly D40's mean is about on par with the fastest S39L's I've gotten.

Akos Fekete
Akos Fekete
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brainchild:

brainchild: SSE2+3DNow!
(hellish, but possible!)

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