mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 361
Search took 0.06 seconds.
Search: Posts Made By: Dresdenboy
Forum: Hardware 2017-05-28, 21:41
Replies: 821
Views: 119,213
Posted By Dresdenboy
With new data at hand, we could do some more...

With new data at hand, we could do some more comparisons.


It seems, memory plays an important role. I got 30% lower times with the new beta BIOS, 3200-14-14-14-36 DR, and running at 3.5GHz...
Forum: Hardware 2017-05-28, 19:21
Replies: 821
Views: 119,213
Posted By Dresdenboy
CPU: Ryzen 7 1700X stock (mostly running 3.5GHz...

CPU: Ryzen 7 1700X stock (mostly running 3.5GHz on all cores with Prime95)
CPU Cooler: Noctua NH-D15 SE-AM4
Motherboard: ASRock Taichi X370
BIOS version: 2.34 (Beta with AGESA 1.0.0.6)
RAM:...
Forum: Software 2016-01-10, 16:35
Replies: 590
Views: 97,593
Posted By Dresdenboy
That depends on the typically visited locations....

That depends on the typically visited locations. ;)
Forum: GPU Computing 2010-11-04, 14:22
Replies: 17
Views: 4,754
Posted By Dresdenboy
FWIW, AMD offers an OpenCL Webinar series:...

FWIW, AMD offers an OpenCL Webinar series: http://developer.amd.com/zones/OpenCLZone/Events/pages/OpenCLWebinars.aspx

Another point for OpenCL will be the OpenCL capable IGPs coming with the CPU...
Forum: Hardware 2009-11-30, 20:48
Replies: 9
Views: 1,493
Posted By Dresdenboy
You are right. Intel, AMD and Nvidia think, that...

You are right. Intel, AMD and Nvidia think, that GPGPU (as addition to conventional cores) is the way to go. Look at
Larrabee (already reaches 1 TFLOPS - DP I suppose),
Hemlock (this dual GPU card...
Forum: Hardware 2009-11-25, 12:16
Replies: 9
Views: 1,493
Posted By Dresdenboy
Now, after AMD decided to include AVX (with FMA...

Now, after AMD decided to include AVX (with FMA support, which Sandy Bridge won't have) and published some architecture details this November (a lot of that was already published in patents as I...
Forum: Programming 2007-10-18, 10:33
Replies: 7
Views: 2,757
Posted By Dresdenboy
I found a paper covering this topic, called...

I found a paper covering this topic, called "Beating the popcount":

http://www.icis.ntu.edu.sg/scs-ijit/91/91-1.pdf
Forum: Software 2007-10-18, 08:36
Replies: 27
Views: 2,426
Posted By Dresdenboy
According to the rumour site The Inquirer both...

According to the rumour site The Inquirer both next GPU models from Nvidia and ATI will support double precision:
http://www.theinquirer.net/gb/inquirer/news/2007/10/11/g92-rv670-gpgpu-monsters
...
Forum: Hardware 2007-10-18, 07:47
Replies: 821
Views: 119,213
Posted By Dresdenboy
It seems, either the other two 2347s are somewhat...

It seems, either the other two 2347s are somewhat inefficient by bad configuration (BIOS programs the MSRs with less efficient values) or the higher mem latency thanks to the 2S system really cost...
Forum: Hardware 2007-10-17, 10:53
Replies: 821
Views: 119,213
Posted By Dresdenboy
Here is a first Barcelona result: Quad-Core...

Here is a first Barcelona result:

Quad-Core AMD Opteron(tm) Processor 2347
CPU speed: 1909.87 MHz, 8 cores
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2...
Forum: Hardware 2007-10-17, 10:15
Replies: 19
Views: 2,101
Posted By Dresdenboy
I found someone, who will run the Prime95 25.5a...

I found someone, who will run the Prime95 25.5a benchmark on a 1.9 GHz Barcelona (maybe 2 GHz if he overclocks a bit).
Forum: Hardware 2007-10-14, 20:39
Replies: 4
Views: 974
Posted By Dresdenboy
My assumption is, that they implemented DP in a...

My assumption is, that they implemented DP in a way similar to what has been done in Cell's SPEs. Full featured DP with the same throughput as SP calculations or even half the throughput (filling the...
Forum: Hardware 2007-10-10, 08:16
Replies: 11
Views: 2,938
Posted By Dresdenboy
I extended the answer to his last question by...

I extended the answer to his last question by what I would have answered to his first posting. So I was referring to more questions than I quoted ;)
Forum: Hardware 2007-10-08, 13:19
Replies: 11
Views: 2,938
Posted By Dresdenboy
This is a complex topic. Any single one of these...

This is a complex topic. Any single one of these factors brings it's own benefits and problems with it. If we are into HPC (where Prime95 nicely fits into), "n-way" and "n-issue" would be the most...
Forum: Hardware 2007-09-20, 11:25
Replies: 19
Views: 2,101
Posted By Dresdenboy
Unfortunately (because of the extra work required...

Unfortunately (because of the extra work required to check facts) reading Tom Yager's articles needs to be done with a grain of salt.
Forum: Hardware 2007-09-11, 12:09
Replies: 19
Views: 2,101
Posted By Dresdenboy
More reviews: ...

More reviews:

http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3092

http://techreport.com/articles.x/13176 (contains a deep analysis of cache/mem latencies - Barcelona has higher mem latency...
Forum: Hardware 2007-09-07, 09:36
Replies: 76
Views: 5,821
Posted By Dresdenboy
Well done, patrik! This is because the...

Well done, patrik!



This is because the core pairs 0/1 and 2/3 share one L2 each.
Forum: Hardware 2007-09-07, 09:10
Replies: 9
Views: 1,493
Posted By Dresdenboy
AMD's initiative is not targeted at end...

AMD's initiative is not targeted at end customers, but at compiler and software developers. Same was done by AMD & Intel in the past regarding changes in the instruction sets (MMX, 3DNow!, AMD64,...
Forum: Hardware 2007-08-30, 08:05
Replies: 9
Views: 1,493
Posted By Dresdenboy
SSE5

AMD will introduce SSE5 with upcoming "Bulldozer" core (which is meant to be optimized for high throughput) in 2009.

More here:
http://developer.amd.com/sse5.jsp...
Forum: Hardware 2007-05-16, 07:06
Replies: 96
Views: 7,362
Posted By Dresdenboy
Optimization Manual

The "Software Optimization Guide for AMD Family 10h Processors" is available now:
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/40546.pdf

Besides all the stuff already...
Forum: Hardware 2006-11-09, 11:38
Replies: 11
Views: 1,914
Posted By Dresdenboy
What Nvidia means is actually the 4 component...

What Nvidia means is actually the 4 component vector composed of 4 32bit floats. See as an example, how they handle the bit count:
Forum: Hardware 2006-10-13, 07:09
Replies: 96
Views: 7,362
Posted By Dresdenboy
Confirmation for 128 kB L1 from Johan (from...

Confirmation for 128 kB L1 from Johan (from Anandtech):

http://www.aceshardware.com/forums/read_post.jsp?id=120068309&forumid=1
Forum: Hardware 2006-10-12, 07:47
Replies: 96
Views: 7,362
Posted By Dresdenboy
That is still discussed on some forums out there....

That is still discussed on some forums out there. But months ago someone from AMD already stated, that the L1 caches will still be 2 x 64 kB per core. Also the die plots and die photos support this,...
Forum: Hardware 2006-10-11, 12:30
Replies: 96
Views: 7,362
Posted By Dresdenboy
AMD presented more details on MPF: ...

AMD presented more details on MPF:
http://www.thechannelinsider.com/print_article/AMD+Unveils+Barcelona+QuadCore+Details/191008.aspx
A photo of the beast:...
Forum: Software 2006-09-14, 09:09
Replies: 5
Views: 1,041
Posted By Dresdenboy
TF speedup in 64 bit mode using version 24.11: ...

TF speedup in 64 bit mode using version 24.11:
On P4 (actually a Xeon with Nocona core):
http://mersenneforum.org/showpost.php?p=54004&postcount=95

On K8:...
Showing results 1 to 25 of 361

 
All times are UTC. The time now is 00:25.

Sat Sep 19 00:25:39 UTC 2020 up 8 days, 21:36, 0 users, load averages: 1.10, 1.43, 1.49

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.