Links to Precompiled GMP-ECM versions

[bdodson]

Originally Posted by ATH

Compiled the latest SVN 1681 (The official 6.4 is SVN 1672):

GMP-ECM.html

Didn't have a chance to do the speedtests yet. I will add them tomorrow or monday.


I skipped the core2 32bit and pentium4 versions. I'll add them if someone requests them, but I don't have access to the Core2 Conroe anymore, so the 32bit version will be on the Core2 Yorksfield.

I get "signal -1073741795" from the i7 mpir w asmredc version. Google
seems to have seen this, but isn't very informative. Not sure which i7's we
have, maybe older ones missing avx? -Bruce

[Karl M Johnson]

I can confirm that "ecm64-1681mpir250corei7-64-asmredc" works on Bulldozer.

[ATH]

Originally Posted by bdodson

I get "signal -1073741795" from the i7 mpir w asmredc version. Google
seems to have seen this, but isn't very informative. Not sure which i7's we
have, maybe older ones missing avx? -Bruce

I added a new corei7 binary built with -march=corei7 -mtune=corei7 instead of core7-avx, maybe that helps.

GMP-ECM.html

[bdodson]

Originally Posted by ATH

I added a new corei7 binary built with -march=corei7 -mtune=corei7 instead of core7-avx, maybe that helps.

GMP-ECM.html

Thanks, but looks like I'll need another link on the page to get a 5th
corei7 binary. Also, I won't be able to test the new binary until there's
a site that closes for the day. -Bruce

[ATH]

Originally Posted by bdodson

Thanks, but looks like I'll need another link on the page to get a 5th
corei7 binary.

Did you try to hit F5 to refresh the page? Otherwise here is the direct links with and without --enable-asm-redc:
ecm64-1681mpir250corei7noavx-64-asmredc.zip

ecm64-1681mpir250corei7noavx-64.zip

[bdodson]

Originally Posted by ATH

Did you try to hit F5 to refresh the page? Otherwise here is the direct links with and without --enable-asm-redc:
ecm64-1681mpir250corei7noavx-64-asmredc.zip

ecm64-1681mpir250corei7noavx-64.zip

Thanks, I see the two new binaries now. Our i7's turn out to be
"i7 quad core 870"'s, not the i7-2700k 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

 341602 Jan 24  2011 ecm63mpircore2-64-asmredc.zip
 999345 Jan 12 13:44 ecm64-1681mpir250corei7noavx-64-asmredc.zip

and on

Input number is 18497627458323369222497070876046723999931638433141649181124615832553914429217118808483686055543196404160468420183749785716365582925168760774103407003448171479049297661884597054335772234218906543053621 
(200 digits)

the new binary appears just slightly slower

< GMP-ECM 6.3 [configured with GMP 5.0.1 and --enable-asm-redc] [ECM]
---
> GMP-ECM 6.4 [configured with MPIR 2.5.0, --enable-asm-redc] [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

Suppose it's good to switch anyway. Regards, Bruce

[ATH]

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.

[Yamato]

Originally Posted by bdodson

...
the new binary appears just slightly slower

Could you please compare that with my core2-binary (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.info-1 ? I got an error message here.

[lorgix]

Originally Posted by ATH

I added a new corei7 binary built with -march=corei7 -mtune=corei7 instead of core7-avx, maybe that helps.

GMP-ECM.html

I switched from ecm631mpir240core2-64-asmredc to ecm64-1681mpir250core2-64-asmredc.

I did a little testing, and it seems the new version is slower (at least for small inputs).

[bdodson]

Originally Posted by Yamato

Could you please compare that with my core2-binary (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.info-1 ? I got an error message here.

Thanks, but these are windows7 machines. Regards, Bruce

[bdodson]

Originally Posted by ATH

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.

I've assumed that I have the MPIR build and

GMP-ECM 6.3 [configured with GMP 5.0.1 and --enable-asm-redc] [ECM]

is a reporting error? I'm double checking, and get

unzip -v ecm63mpircore2-64-asmredc.zip 

Archive:  ecm63mpircore2-64-asmredc.zip
 Length   Method    Size  Ratio   Date   Time   CRC-32    Name
--------  ------  ------- -----   ----   ----   ------    ----
  887156  Defl:N   341454  62%  01-22-11 21:43  95f18f0f  ecm.exe
--------          -------  ---                            -------
  887156           341454  62%                            1 file
-----------
-rwxr-xr-x+ 1 bad0 faculty  887156 Jan 22  2011 ecm63core2-64asm

and

diff ecm63core2-64asm /tmp/bdtmp/ecm.exe

[binary files are the same]

This is surely the binary that was in the MPIR tarfile last January.

As I was reporting back then, these pcs run windows7, an upgrade for
our public sites from xp, and the 64-bit performance was way-up from
any of the 32-bit binaries. -Bruce