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Re: These days what percentage of a CPU's work involves doing arithmetic computations versus other, non-arithmetic computations?

comp.compilers

Posted: 4 Days 10 Hours ago by: minf...@arcor.de

Cryptocurrency mining does not involve lots of text processing. ;-) Computational weather forecasting neither, or medical image processing .. etc etc .. Define your application domain and you get a different response From historic persp

Have you implemented a parser or compiler in SQL?

comp.compilers

Posted: 10 Days 20 Hours ago by: Roger L Costello

Hello Compiler Experts! I read this [1] on Quora: Interesting! Have you done that - written a parser and/or compiler in SQL? How did you do it? Is there a web page or book that describes how to do it? /Roger [1] https://www.quora.com

Re: These days what percentage of a CPU's work involves doing arithmetic computations versus other, non-arithmetic computations?

comp.compilers

Posted: 12 Days 17 Hours ago by: Derek Jones

Roger, Knight did lots of work trying to compare computer performance, which required measuring instruction usage across the most common kinds of applications. Links to his papers and some data here: http://shape-of-code.coding-guideline

Re: ancient floating point, These days what percentage of a CPU's work involves doing arithmetic computations

comp.compilers

Posted: 14 Days 10 Hours ago by: Hans-Peter Diettrich

Horst Zuse claims the Z1 had 22 bit floating point arithmetic. <http://www.horst-zuse.homepage.t-online.de/z1.html> DoDi

Re: fast arithmetic hardware, was These days what percentage of a CPU's work involves doing arithmetic computations

comp.compilers

Posted: 15 Days 11 Hours ago by: George Neuner

But processors /aren't/ getting faster (much) anymore - they're near the limits both of feature size reduction and of ability to dissipate heat. The wires and insulators now are just a few atoms thick, and since there are insulators /in

Re: ancient floating point, These days what percentage of a CPU's work involves doing arithmetic computations

comp.compilers

Posted: 15 Days 15 Hours ago by: Philipp Klaus Krause

AFAIK, the Z1 (built in 1939, working but like many early computers not very reliable, working, destroyed 1944, working replica in a museum in Berlin), the Z3 (built in 1941, destroyed 1943, working replica in a museum in Hünfeld), the Z4

Re: fast arithmetic hardware, was These days what percentage of a CPU's work involves doing arithmetic computations

comp.compilers

Posted: 16 Days 1 Hour ago by: gah4

(snip, I wrote) (snip, then our moderator wrote) Yes, I wasn't so sure what was "olden days" and what is "new days". There is pretty much a continuous change, as processors get faster, then less efficient processing makes more sense.

Re: These days what percentage of a CPU's work involves doing arithmetic computations versus other, non-arithmetic computations?

comp.compilers

Posted: 16 Days 2 Hours ago by: Robin Vowels

----- Original Message ----- From: "Roger L Costello" <costello@mitre.org> Sent: Thursday, July 15, 2021 4:30 AM From ENIAC, computers were designed to perform arithmetic computations. The motivation was to be able to reduce the amount o

Re: These days what percentage of a CPU's work involves doing arithmetic computations versus other, non-arithmetic computations?

comp.compilers

Posted: 16 Days 3 Hours ago by: Robin Vowels

----- Original Message ----- From: "gah4" <gah4@u.washington.edu> Sent: Thursday, July 15, 2021 7:31 PM .. Certainly early computers were designed to perform numerial computations. From ENIAC, which was designed to compute range tables, Pi

Re: These days what percentage of a CPU's work involves doing arithmetic computations versus other, non-arithmetic computations?

comp.compilers

Posted: 16 Days 11 Hours ago by: Hans-Peter Diettrich

Much arithmetic is required for rendering glyphs on screen, depending on fonts, text attributes etc. That's true already for a browser, no need to ask for an editor or sophisticated text processing system. An editor does not much comput

Re: These days what percentage of a CPU's work involves doing arithmetic computations versus other, non-arithmetic computations?

comp.compilers

Posted: 16 Days 22 Hours ago by: gah4

It seems that people might have believed that, even for a long time, but I suspect rarely true. There are stories about the IBM 704 Fortran compiler, and the authors believed that they had to make optimal use of the hardware, or no-one

Re: Lexing Unicode strings?

comp.compilers

Posted: 17 Days 12 Hours ago by: Hans Aberg

I wrote code, in Haskell and C++, that translates Unicode character classes into byte classes. From a theoretical standpoint, a Unicode regular language mapped under UTF-8 is a byte regular language, so it is possible. So the 2^8 = 256 si

CFP: PLOS '21: 11th Workshop on Programming Languages and Operating Systems (Oct 2021, online)

comp.compilers

Posted: 17 Days 12 Hours ago by: Eric Eide

CALL FOR PAPERS 11th Workshop on Programming Languages and Operating Systems (PLOS 2021) October 25, 2021

These days what percentage of a CPU's work involves doing arithmetic computations versus other, non-arithmetic computations?

comp.compilers

Posted: 17 Days 13 Hours ago by: Roger L Costello

Hello Compiler Experts! As I understand it, computers were originally designed to do arithmetic computations and in the old days nearly 100% of a CPU's work involved arithmetic computations. I look at what I now do on a daily basis with c

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