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Groups > comp.lang.forth > #42545
| From | anton@mips.complang.tuwien.ac.at (Anton Ertl) |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: Problem with GForth |
| Date | 2015-10-10 11:03 +0000 |
| Organization | Institut fuer Computersprachen, Technische Universitaet Wien |
| Message-ID | <2015Oct10.130320@mips.complang.tuwien.ac.at> (permalink) |
| References | (1 earlier) <mtphbd$tmi$2@dont-email.me> <b5e0c255-5ffc-416d-a269-d8edb4f9625b@googlegroups.com> <2015Oct8.094515@mips.complang.tuwien.ac.at> <083ceee9-89a3-4600-8169-f4828f442a8f@googlegroups.com> <87lhbc6hpu.fsf@jester.gateway.sonic.net> |
Paul Rubin <no.email@nospam.invalid> writes:
>lehs <skydda.barnen@gmail.com> writes:
>> https://github.com/Lehs/BIG-INTEGER-ANS-FORTH
>> [ three 1022-bit operands ] b**mod
>> takes a half second in both SP-Forth and GForth64 at Win 10.
>
>Nice! That's fast enough to be useful for some purposes. I'd be
>interested in seeing measurements with gforth-fast on various cpus, and
>with other Forth implementations.
gforth-fast on a Core i7-4790K (running at 4.4GHz thanks to Turbo mode):
real 0m0.117s
user 0m0.112s
sys 0m0.000s
vfxlin 4.71 on the same machine
real 0m0.117s
user 0m0.112s
sys 0m0.000s
Strange. Let's see what the performance counters say:
perf stat -e instructions:u -e cycles:u vfxlin-4.71 "include /nfs/nfstmp/anton/VfxLinEval-4.71/Lib/Ndp387.fth include bench.fs" >/dev/null
1041236122 instructions:u # 2.08 insns per cycle
499547195 cycles:u
0.116635759 seconds time elapsed
perf stat -e instructions:u -e cycles:u /localtmp/anton/gforth/gforth-fast bench.fs >/dev/null
1595291884 instructions:u # 3.14 insns per cycle
507562915 cycles:u
0.117390969 seconds time elapsed
While VFX executes fewer instructions, apparently the dependencies are
such that this does not result in significantly better performance for
this benchmark.
- anton
--
M. Anton Ertl http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
New standard: http://www.forth200x.org/forth200x.html
EuroForth 2015: http://www.rigwit.co.uk/EuroForth2015/
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Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-09-21 11:09 -0700
Re: Problem with GForth Bernd Paysan <bernd.paysan@gmx.de> - 2015-09-21 20:14 +0200
Re: Problem with GForth "Elizabeth D. Rather" <erather@forth.com> - 2015-09-21 12:36 -1000
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-09-21 16:20 -0700
Re: Problem with GForth Bernd Paysan <bernd.paysan@gmx.de> - 2015-09-22 02:37 +0200
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-09-21 22:59 -0700
Re: Problem with GForth "Elizabeth D. Rather" <erather@forth.com> - 2015-09-21 20:04 -1000
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-09-21 16:17 -0700
Re: Problem with GForth Bernd Paysan <bernd.paysan@gmx.de> - 2015-09-22 02:35 +0200
Re: Problem with GForth hughaguilar96@gmail.com - 2015-09-21 23:30 -0700
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-07 18:33 -0700
Re: Problem with GForth Paul Rubin <no.email@nospam.invalid> - 2015-10-07 19:03 -0700
Re: Problem with GForth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-10-08 07:45 +0000
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-08 05:06 -0700
Re: Problem with GForth Howerd <howerdo@yahoo.co.uk> - 2015-10-08 14:24 -0700
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-08 22:49 -0700
Re: Problem with GForth Paul Rubin <no.email@nospam.invalid> - 2015-10-08 23:11 -0700
Re: Problem with GForth Coos Haak <chforth@hccnet.nl> - 2015-10-09 01:01 +0200
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-08 22:53 -0700
Re: Problem with GForth Coos Haak <chforth@hccnet.nl> - 2015-10-09 10:04 +0200
Re: Problem with GForth Paul Rubin <no.email@nospam.invalid> - 2015-10-09 01:23 -0700
Re: Problem with GForth Coos Haak <chforth@hccnet.nl> - 2015-10-09 12:32 +0200
Re: Problem with GForth "WJ" <w_a_x_man@yahoo.com> - 2015-10-08 23:34 +0000
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-08 22:55 -0700
Re: Problem with GForth Paul Rubin <no.email@nospam.invalid> - 2015-10-08 16:52 -0700
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-08 23:03 -0700
Re: Problem with GForth Coos Haak <chforth@hccnet.nl> - 2015-10-09 10:21 +0200
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-09 08:04 -0700
Re: Problem with GForth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-10-10 11:03 +0000
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-13 12:34 -0700
Re: Problem with GForth Marcos Cruz <use_the_contact_page@programandala.net> - 2015-10-13 18:31 +0000
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-13 12:40 -0700
Re: Problem with GForth Marcos Cruz <use_the_contact_page@programandala.net> - 2015-10-14 20:20 +0000
Re: Problem with GForth "WJ" <w_a_x_man@yahoo.com> - 2015-10-09 05:58 +0000
Re: Problem with GForth lehs <skydda.barnen@gmail.com> - 2015-10-08 23:08 -0700
Re: Problem with GForth mhx@iae.nl - 2015-10-09 00:30 -0700
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