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Sioux
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加入日期: Dec 2005
文章: 6,087
 
引用:

  28.10版,2016/10/30:
ftp://mersenne.org/gimps/p95v2810.win64.zip

  29.1版,2017/3/19,支援AVX-512及雷禪:
ftp://mersenne.org/gimps/p95v291.win64.zip

  29.2版,2017/6/23:
ftp://mersenne.org/gimps/p95v292.win64.zip

1) Throughput benchmarks of all FFT implementations are written to gwnum.txt.
  These benchmarks will then be used to pick the best FFT implementation to use.
  This can lead to minor performance improvements.

2) Benchmarks are run at 5AM (and every 21 hours after that) for any FFT sizes that will be needed within the next 7 days.
  Once enough benchmark data is accumulated, these automatic benchmarks no longer take place.

3) Default FFT implementations for Ryzen added.

4) A few new FFT sizes (up to 50M) are enabled for FMA3-capable CPUs.

5) ECM and P-1 on Fermat numbers will automatically add known Fermat factors to the worktodo.txt entries.





  29.3版,2017/9/7:

ftp://mersenne.org/gimps/p95v293.win64.zip

1) A new error check for LL testing has been implemented. This error check,
called a Jacobi error check, has a 50% chance of detecting hardware error(s)
since the last time a Jacobi error check was performed. This error check
takes roughly 30 seconds and is scheduled to run twice a day. The program
now saves two additional intermediate files that have passed the Jacobi
error check. This test requires use of the GMP (GNU multi-precision) library.

2) The GCD step in P-1 and ECM factoring is faster.



  29.4版beta2,2017/10/31:

ftp://mersenne.org/gimps/p95v294b2.win64.zip

1) GIMPS has a new sub-project -- finding (probable) prime Mersenne cofactors.
This sub-project has two parts: 1) Running PRP tests, and 2) Finding
additional factors. To support this new sub-project there are three
new work preferences: PRP on Mersenne cofactors, PRP double-checking on
Mersenne cofactors, ECM on Mersenne cofactors.

2) Like LL tests, PRP tests now support shift counts to aid in running double-checks.
Shift counts are only supported for Mersenne numbers and Mersenne cofactors.

3) PRP tests now support a type of low overhead error checking that almost guarantees
correct results even on flaky hardware. We call this Gerbicz error-checking after
it was proposed by Robert Gerbicz at mersenneforum.org. This error-check only
works for base-2 numbers.

4) Because PRP tests are highly reliable, we now offer the option to do PRP tests
instead of Lucas-Lehmer primality tests. There are 3 new work preferences
similar to LL work preferences: first-time PRP tests, world record PRP tests,
PRP tests on 100 million digit numbers, and PRP double-checking.
If you are looking for a 100 million digit prime, PRP testing is recommended
rather than LL testing.

5) For non-base-2 PRP tests, there is a new option to run each iteration twice and
rollback if a mismatch occurs. Useful only on flaky hardware due to the obvious
high overhead.
 
 
 
 
舊 2017-11-06, 09:18 AM #132
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