Wish: Provide optimized applications for gmp-ecm

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Ralf Recker
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Wish: Provide optimized applications for gmp-ecm

#1 Ungelesener Beitrag von Ralf Recker » 07.07.2010 15:00

and/or use newer gmp-ecm versions, for example 6.3

I've done some speed tests with gmp-ecm 6.3 (Simply compiled with ./configure && make) against the currently distributed gmp-ecm 6.2.1 version on a Core 2 Quad running Ubuntu 10.04 LTS. The gmp-ecm 6.3 binary is using the default libgmp 4.3.2 (fat binary / multiple codepaths?) of the distribution.

Here are some timings with the test number from your ecm-test.zip file:

time ./ecm-6.2.1_x86_64-pc-linux-gnu -v -nn -timestamp -chkpnt checkpnt -inp in 11000000

real 2m12.613s
user 2m11.910s
sys 0m0.350s

time ./ecm-6.3/ecm -v -nn -timestamp -chkpnt checkpnt -inp in 11000000

real 1m1.334s
user 1m1.070s
sys 0m0.230s

A comparison using the inp_ecm_mp_1238268687_P3217 file:

time ./ecm-6.2.1_x86_64-pc-linux-gnu -v -nn -timestamp -chkpnt checkpnt -inp inp_ecm_mp_1238268687_P3217 11000000

real 15m25.443s
user 15m20.290s
sys 0m2.340s

time ./ecm-6.3/ecm -v -nn -timestamp -chkpnt checkpnt -inp inp_ecm_mp_1238268687_P3217 11000000

real 9m45.100s
user 9m43.200s
sys 0m1.680s
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