Links to Precompiled GMP-ECM versions - Page 33

lorgix · 2014-07-17, 17:20

Most speed-comparisons I remember favor MPIR.

Rysiu · 2014-08-24, 11:48

Could someone compile the ECM based on GMP 6.0 and with the option of multi-threading (OpenMP)? (for Linux 64-bit)

VBCurtis · 2014-08-24, 22:38

Quote:

Originally Posted by Rysiu

Could someone compile the ECM based on GMP 6.0 and with the option of multi-threading (OpenMP)? (for Linux 64-bit)

What do you expect multi-threading to get you that the python ECM script does not do for you already? We use the python script to set the number of independent threads for ECM, where each thread does its own curve.

Karl M Johnson · 2014-10-20, 08:23

What a glorious day for a new ECM binary!
This one is a native binary for Haswell 4xxx/5xxx CPUs, with AVX2 support.
A great deal of gratitude goes to ATH for providing the updated automated compilation environment.
MPIR 2.7.0 was used for compilation of GMP-ECM 6.4.4.

Of course, the native binary performed best in a preliminary benchmark (512 curves B1=1M B2=1B against C98; 5960X @ 4 GHz; YAFU 1.34):

Code:

ECM 7 SVN
Nehalem: 03:41.880
Core 2.: 03:42.380
Generic: 04:20.390


ECM 6.4.4
Haswell native: 03:19.018
Core i7.......: 03:45.265

ECM 6.4.2
Core i7: 03:39.280
Core 2.: 03:45.585

Very interested in the performance of latest dev version of ECM, but its compilation fails right now.

Happy factoring!

Karl M Johnson · 2014-10-22, 07:19

Another binary, latest SVN this time, for Haswell.
Has taken 184.36 seconds to complete the benchmark, making it the fastest Haswell binary.

kracker · 2014-10-23, 18:50

Quote:

Originally Posted by Karl M Johnson

Another binary, latest SVN this time, for Haswell.
Has taken 184.36 seconds to complete the benchmark, making it the fastest Haswell binary.

Hmm... is gmp faster than mpir?

On a Haswell 4670K:

Your latest Haswell binary here:

Code:

Step 1 took 66281ms
Step 2 took 20531ms

My binary which I linked with GMP 6.0.0

Code:

Step 1 took 50421ms
Step 2 took 16688ms

EDIT: Both binaries are the same GMP-ECM version.

Karl M Johnson · 2014-10-23, 19:02

Well I'll be!
Mayhaps it has something to do with using beta MPIR?
Or, perhaps GMP is indeed faster than MPIR?
Need more data.

PS
Can I get that binary of yours, please?

lorgix · 2014-10-23, 19:12

I'd be very surprised if GMP turned out to be faster than MPIR.
Also, I suggest you use something like a c200 for benchmarking.

Anyone have a recent binary for Nehalem?

kracker · 2014-10-23, 19:16

Quote:

Originally Posted by Karl M Johnson

Well I'll be!
Mayhaps it has something to do with using beta MPIR?
Or, perhaps GMP is indeed faster than MPIR?
Need more data.

PS
Can I get that binary of yours, please?

Sure. I hope my numbers are right though... I ran them both atleast twice.

Karl M Johnson · 2014-10-24, 04:50

Got interesting results.
On a C100, the difference between the binaries is too little to be evident.
However, on a C200:

Code:

GMP-ECM: 02:11.230
MPIR-ECM: 02:28.293

GMP-ECM is indeed faster on a C200 than MPIR-ECM!

Well, whaddaya know

Karl M Johnson · 2014-10-24, 08:32

It gets worse on a C1000:

Code:

MRIP-ECM: 15:33.286
GMP-ECM: 12:48.195

2014-10-23, 19:02	#359
Karl M Johnson Mar 2010 633₈ Posts	Well I'll be! Mayhaps it has something to do with using beta MPIR? Or, perhaps GMP is indeed faster than MPIR? Need more data. PS Can I get that binary of yours, please? Last fiddled with by Karl M Johnson on 2014-10-23 at 19:03

2014-10-24, 04:50	#362
Karl M Johnson Mar 2010 3×137 Posts	Got interesting results. On a C100, the difference between the binaries is too little to be evident. However, on a C200: Code: GMP-ECM: 02:11.230 MPIR-ECM: 02:28.293 GMP-ECM is indeed faster on a C200 than MPIR-ECM! Well, whaddaya know

2014-10-24, 08:32	#363
Karl M Johnson Mar 2010 3×137 Posts	It gets worse on a C1000: Code: MRIP-ECM: 15:33.286 GMP-ECM: 12:48.195

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Project Links	masser	Sierpinski/Riesel Base 5	25	2011-11-26 09:21
Links to Precompiled Msieve versions	wblipp	Msieve	0	2011-07-17 20:59
Links	davieddy	Information & Answers	9	2010-10-08 14:27
Links question	ET_	PrimeNet	0	2008-01-26 09:35
Links.	Xyzzy	Forum Feedback	2	2007-03-18 02:17

2014-07-17, 17:20	#353
lorgix Sep 2010 Scandinavia 3×5×41 Posts	Most speed-comparisons I remember favor MPIR.

2014-08-24, 11:48	#354
Rysiu Aug 2014 3 Posts	Could someone compile the ECM based on GMP 6.0 and with the option of multi-threading (OpenMP)? (for Linux 64-bit)

2014-10-23, 19:12	#360
lorgix Sep 2010 Scandinavia 1147₈ Posts	I'd be very surprised if GMP turned out to be faster than MPIR. Also, I suggest you use something like a c200 for benchmarking. Anyone have a recent binary for Nehalem?