20120112, 09:31  #265  
Jun 2005
lehigh.edu
400_{16} Posts 
Quote:
seems to have seen this, but isn't very informative. Not sure which i7's we have, maybe older ones missing avx? Bruce 

20120112, 09:34  #266 
Mar 2010
3·137 Posts 
I can confirm that "ecm641681mpir250corei764asmredc" works on Bulldozer.

20120112, 12:39  #267  
Einyen
Dec 2003
Denmark
2·5·313 Posts 
Quote:
GMPECM.html 

20120112, 13:24  #268  
Jun 2005
lehigh.edu
2^{10} Posts 
Quote:
corei7 binary. Also, I won't be able to test the new binary until there's a site that closes for the day. Bruce 

20120112, 16:10  #269  
Einyen
Dec 2003
Denmark
2·5·313 Posts 
Quote:
ecm641681mpir250corei7noavx64asmredc.zip ecm641681mpir250corei7noavx64.zip 

20120113, 00:58  #270  
Jun 2005
lehigh.edu
2^{10} Posts 
Quote:
"i7 quad core 870"'s, not the i72700k 2nd generation chips. Typical purchasing for us, commodity chips for public pc's, library. More than sufficient for word processing and web surfing. I have Code:
341602 Jan 24 2011 ecm63mpircore264asmredc.zip 999345 Jan 12 13:44 ecm641681mpir250corei7noavx64asmredc.zip Code:
Input number is 18497627458323369222497070876046723999931638433141649181124615832553914429217118808483686055543196404160468420183749785716365582925168760774103407003448171479049297661884597054335772234218906543053621 (200 digits) Code:
< GMPECM 6.3 [configured with GMP 5.0.1 and enableasmredc] [ECM]  > GMPECM 6.4 [configured with MPIR 2.5.0, enableasmredc] [ECM] 3,5c3,5 < Using B1=400000000, B2=5821851770290, polynomial Dickson(30), sigma=62857100 < Step 1 took 4328684ms < Step 2 took 1681738ms  > Using B1=400000000, B2=5821851770290, polynomial Dickson(30), sigma=637635111 > Step 1 took 4481549ms > Step 2 took 1691316ms 

20120113, 03:44  #271 
Einyen
Dec 2003
Denmark
2×5×313 Posts 
I'm surprised the GMP build is faster than MPIR. Maybe you should try the Core2 build instead of Corei7 one? It might be closer to your Corei7 870, or maybe the Corei7 old 6.3.1 build with MPIR?
MPIR has been faster for 64bit in both 6.3, 6.3.1 and now 6.4. Maybe it is a 32 bit Windows? If it is I can build a 32 bit binary if needed. Last fiddled with by ATH on 20120113 at 03:53 
20120113, 11:36  #272 
Sep 2005
Berlin
2×3×11 Posts 
Could you please compare that with my core2binary (link) on your i7, I only have a core2, but the timings for stage 2 differ from the timings posted here. As I see it, MPIR is faster on Win64 but not on Linux64 (there is no real difference to gmp).
By the way, has anybody successfully run the 'tuneup' command for building MPIR, according to /doc/mpir.info1 ? I got an error message here. 
20120113, 11:47  #273  
Sep 2010
Scandinavia
3×5×41 Posts 
Quote:
I did a little testing, and it seems the new version is slower (at least for small inputs). 

20120113, 13:36  #274  
Jun 2005
lehigh.edu
2^{10} Posts 
Quote:


20120113, 14:19  #275  
Jun 2005
lehigh.edu
2^{10} Posts 
Quote:
GMPECM 6.3 [configured with GMP 5.0.1 and enableasmredc] [ECM] is a reporting error? I'm double checking, and get Code:
unzip v ecm63mpircore264asmredc.zip Archive: ecm63mpircore264asmredc.zip Length Method Size Ratio Date Time CRC32 Name         887156 Defl:N 341454 62% 012211 21:43 95f18f0f ecm.exe     887156 341454 62% 1 file  rwxrxrx+ 1 bad0 faculty 887156 Jan 22 2011 ecm63core264asm and diff ecm63core264asm /tmp/bdtmp/ecm.exe [binary files are the same] As I was reporting back then, these pcs run windows7, an upgrade for our public sites from xp, and the 64bit performance was wayup from any of the 32bit binaries. Bruce 

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