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1) Message boards : General discussion : Applications licenses. (Message 56836)
Posted 2483 days ago by steveharveyProject donor
Here's the OpenPFGW license:

The OpenPFGW Public License
updated to PFGW v1.2 Release (January 30, 2005)

Redistribution and use of this software and associated documentation
("Software"), with or without modification, are permitted provided
that the following conditions are met:

1. Redistributions of source code must retain copyright statements
and notices.

2. Redistributions in binary form must reproduce applicable copyright
statements and notices, this list of conditions, and the following
disclaimer in the documentation and/or other materials provided
with the distribution. You may redistribute the binary using any suitable
format or media, but must accompany it with files as listed in the
accompanying MANIFEST.

3. Redistributions must contain a verbatim copy of this document.
They must either contain the entire distribution, as you received
it, OR provide suitable details of how to obtain such a complete
distribution.

4. The name "OpenPFGW" must not be used to endorse or promote
products derived from this Software without prior written permission
of primeform.net.

5. Products derived from this Software may not be called "OpenPFGW",
"PFGW", "WinPFGW", "PrimeForm", or "PrimeForm/GW", nor may any of
those terms appear in their names without prior written permission of
primeform.net.

6. Due credit should be given to primeform.net
( http://www.primeform.net/openpfgw ). In particular works
derived from the project must give credit to primeform.net. The
definition of "works derived" includes software in whole or in
part derived from any or all of the OpenPFGW source code or
binaries. "Works derived" also includes mathematical discovery
or publication in which the PrimeForm/GW program (or any derivative)
played a part.

7. The terms and conditions of third-party elements of the OpenPFGW
Project must be adhered to. primeform.net is in no event liable for
violations of such terms and conditions. These conditions, as they
apply to specific components of the OpenPFGW project, are listed below
under "Third-party Element Licenses".

8. primeform.net may revise this license from time to
time. Each revision is distinguished by a version number. You
may use the Software under terms of this license revision or under
the terms of any subsequent revision of the license.

THIS SOFTWARE IS PROVIDED BY PRIMEFORM.NET AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
PRIMEFORM.NET OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGE.

Copyright 2000/2002 primeform.net, Lexington, Kentucky, USA.
All Rights Reserved. Permission to copy and distributed verbatim
copies of this document is granted.

THIRD-PARTY ELEMENT LICENSES

It is emphasized these apply only to the specific named modules. All
other components of this distribution fall under the Terms and Conditions
of the OpenPFGW Public License above. The third-party licenses are
independent of this OpenPFGW Public License.

GMP is used by the OpenPFGW project under Section 6 of the LGPL. It may be
obtained from http://www.primeform.net/openpfgw or any suitable FSF mirror.
Under Section 6c of this license (see COPYING.LIB), primeform.net hereby
offers and guarantees that, up until at least 31 Dec 2005, the source to
the GMP library as it is used in this product will be available by request
from primeform.net at no more than the cost of such distribution.

The "home" site for GMP is http://www.swox.com/gmp/ It will have the
lastest available version. NOTE OpenPFGW may not always be built with
the latest version of GMP.

For the Win32 environment, GMP is built using the MinGW libraries, built
under the CyGWin environment. Current MinGW can be found at
http://www.mingw.org and CyGWin can be found at http://www.cygwin.com
For anyone adventurous enough to rebuild the GMP dll's themselves, a
good reference for how to do this with MinGW under CyGWin can be found
in the GMP mailing list (http://swox.com/list-archives/gmp) The exact
message is http://www.swox.com/list-archives/gmp/2002-March/000434.html

The prime95 (version 23) libraries are used here with the kind permission
and assistance of Mr George Woltman. They are available in source code form
from http://www.mersenne.org/gimps . If you use George Woltman's source code
to find Mersenne primes, you must agree to adhere to the GIMPS prize rules
at http://www.mersenne.org/prize.htm. Other than that restriction, you may
use this code as you see fit.

The modular Erat routines from the GFNSieve program (Erat_mod.cpp and
Erat_Mod.h) are used with permission of Jim Fougeron. Also included are
the bitmap manipluation functions from the file bmap.cxx. See comments
contained within these source files for any additional licensing specifics.

CONTACT INFORMATION

For questions regarding this license, contact

primeform.net
5000 Bryan Station Road #5
Lexington KY 40516-9505
UNITED STATES

telephone: +1 (859) 293 6707

e-mail: chris_nash@prodigy.net or jfoug@cox.net




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2) Message boards : Number crunching : AMD FX X8 8120 not working with AVX! (Message 51628)
Posted 2620 days ago by steveharveyProject donor
Both PFGW and LLR have new versions out today, incorporating Buldozer friendly gwnum 2.75.

https://sourceforge.net/projects/openpfgw/

http://jpenne.free.fr/Development/

Give 'em a try!
3) Message boards : General discussion : Lowest prime listed on your Top 5k page (Message 49279)
Posted 2656 days ago by steveharveyProject donor
2607*800^2607-1
digits 7572
submitted March 2000
rank 59414

I've been doing this for a long time....
4) Message boards : Project Staging Area : GCW13 Mini-Challenge Series (Message 19594)
Posted 3448 days ago by steveharveyProject donor
For purposes of my records, can anyone tell me to what value base 13 was searched? n Thanks,

Steven Harvey
5) Message boards : General discussion : If you have time, I would love your opinion :) (Message 18863)
Posted 3483 days ago by steveharveyProject donor
There is a 32bit GCWSieve. The website is down for now, since it was on Geocities, which is defunct. But you can grab a copy here:

http://dl.getdropbox.com/u/1184705/gcwsieve.exe


Happy prime hunting!

Steven Harvey
6) Message boards : Number crunching : Athlon II 620 times (Message 18665)
Posted 3495 days ago by steveharveyProject donor
I have updated the bios and am now running in console mode without a Xserver and am getting about 1.35ms per iteration on a 64k fft, at 2.6 Ghz, which is much better, but still not a good as a core 2, probably about 10% slower.

7) Message boards : Number crunching : Athlon II 620 times (Message 18448)
Posted 3510 days ago by steveharveyProject donor
It comes with a very generic small HSF, no heatpipes. I don't have a Phenom to compare whether the L3 cache makes a difference. Why don't you run some tests and report your results?

8) Message boards : Number crunching : Athlon II 620 times (Message 18295)
Posted 3516 days ago by steveharveyProject donor
I got my stuff on newegg. I have found that their prices are usually about as low as anyone elses, and also that their customer service is superior. The motherboard I got has two memory slots.
I am using just one, so its single channel. Presumeably dual mode would be faster, but in my experience, single or dual doesn't make much difference to LLR. I have DDR2, & perhaps DDR3 might be faster, but again, I doubt it, because LLR seems to mostly just use the cache on chip.
I opine that the reason the chip is slower than intels may be because the 512k cache per core is just insufficient.
I have also found in the past that memory speed doesn't seem to make much difference to LLR, so at present I just use DDR2 800.
I am running it strictly as a number cruncher, with just the motherboard, chip, memory, and a flashdrive with linux installed. This minimal configuration running four instances of LLR uses 125 watts, so it's not a winner on power consumption either.
I think the best bang for the buck currently would be an intel q8200 or q8400, and a cheap motherboard like the GIGABYTE GA-G31M-ES2L which costs $53 at newegg right now. I like Gigabyte boards because they have solidstate capacitors. and I have two of this particular one.

Hope this helps. Happy numbercrunching.

Steven

9) Message boards : Number crunching : Athlon II 620 times (Message 18220)
Posted 3519 days ago by steveharveyProject donor
From looking at the mersenne benchmarks, Athlon II is about the same as Phenom II. & they are about 10% slower than i5 on large FFTs (1024k and up). However, I have found my Athlon II to be about 2/3 the speed of my q6600 on 48k and 64k FFTs. 64k FFT = ~1.8ms per iteration.

Steven Harvey

10) Message boards : Number crunching : Athlon II 620 times (Message 18188)
Posted 3521 days ago by steveharveyProject donor
I just got an Athlon II 620, and when running 4 instances of prpnet,
I get about 1.1 ms per bit at the 48k FFT range, i.e. 2^501000, at stock speed of 2.6 Ghz.

Since this chip is 4 core for $99, I figure people would want to know.
I am using a GIGABYTE GA-M61PME-S2P motherboard and DDR2
single channel 800mhz memory, running the latest Ubuntu.

Steven Harvey




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