Article: ARM Goes 64-bit
By: Chester (lamchester.delete@this.gmail.com), July 27, 2021 1:21 pm
Room: Moderated Discussions
> > > > The problem with ARM is that is an Advanced Ridiculous Instruction Set Computer Microprocessor. The RISC
> > > > started when a PhD at IBM was trying to figure out why the
> > > > code produced by the Fortran H optimizing compiler
> > > > ran faster than the same code run through the Fortran G non-optimizing compiler. It was publicized by a
> > > > college professor who used proof-by-massive-publication to tout his RISC I chip. The facts are that no
> > > > functional chip was produced. The "performance" figures compared times to run assembly code on a simulator
> > > > and then scaled by 7 to make the numbers look better vs.
> > > > high level compiled programs running on real hardware.
> > > > The RISC concept was taken to extremes by the ACM SigArch
> > > > enthusiasts who designed RISCs with only 1 instruction.
> > > > The RISC concept got high clock speeds. The problem was when you wanted to actually run programs. Reducing
> > > > the available instructions usually resulted in increasing the number instructions to perform the same task.
> > > > Windows on the SPARC was larger than Windows on the 8086. An 32-bit integer multiple takes 1 instruction
> > > > on the 8085 and 33 on the SPARC chip. I saw one "comparison" of RISC vs CISC when a SPARC chip using 5ns
> > > > RAM chips was compared to a 68000 with 250ns RAM chips.
> > > >
> > > > The engineers at ARM did a very good job of trying to produce a good RISC instruction set
> > > > by making each RISC instruction extremely complex. Look at how they multiply by 10.
> > > >
> > > > I believe that the RISC concept is why the ARM processor preforms so poorly compared to the Intel and
> > > > AMD CISC chips. You need a better architecture. I favor a stack-based direct execution architecture
> > > > like the Novix chip. Beware! The book "Stack Computers" written by a professor at CMU tries to justify
> > > > stack architecture using a chip which uses a register array to simulate a stack. At TI I worked on
> > > > a real stack computer which integrated the ALU into the top 2 stack elements and was laid out as a
> > > > 1-bit bit slice to reduce non-transistor silicon area. However, the executives at TI knew that "you
> > > > can't make money building CPUs" (ignore Intel and AMD). (Also ignore the quarterly earnings reports
> > > > that show your SBP9900 microprocessor out-selling all but one RAM chip by a factor of 10.)
> > > >
> > > > The ARM is best sold to NVIDIA to be lost into oblivion and replaced by a better architecture.
> > > >
> > > > Robert Pearson
> > >
> > > Wow. Is this 1 of April again or are these forums becoming a beacon for clinically insane?
> >
> > Or that guy was cryogenized last century, just woke up and forgot to read what happened the
> > last 15 years
>
> He's just showing what went on here years ago now that RWT is twenty five. I'm sure there's an
> awful lot we say seriously now that'll seem quite ridiculous in another ten or fifteen years ;-)
I'm sure he's just joking around. Jokes aside, if someone from the 80s got ported forward four decades, they'd say RISC is for high performance and x86 is for low power PCs. Fast forward and the situation flips. And it could flip again in the future, who knows
> > > > started when a PhD at IBM was trying to figure out why the
> > > > code produced by the Fortran H optimizing compiler
> > > > ran faster than the same code run through the Fortran G non-optimizing compiler. It was publicized by a
> > > > college professor who used proof-by-massive-publication to tout his RISC I chip. The facts are that no
> > > > functional chip was produced. The "performance" figures compared times to run assembly code on a simulator
> > > > and then scaled by 7 to make the numbers look better vs.
> > > > high level compiled programs running on real hardware.
> > > > The RISC concept was taken to extremes by the ACM SigArch
> > > > enthusiasts who designed RISCs with only 1 instruction.
> > > > The RISC concept got high clock speeds. The problem was when you wanted to actually run programs. Reducing
> > > > the available instructions usually resulted in increasing the number instructions to perform the same task.
> > > > Windows on the SPARC was larger than Windows on the 8086. An 32-bit integer multiple takes 1 instruction
> > > > on the 8085 and 33 on the SPARC chip. I saw one "comparison" of RISC vs CISC when a SPARC chip using 5ns
> > > > RAM chips was compared to a 68000 with 250ns RAM chips.
> > > >
> > > > The engineers at ARM did a very good job of trying to produce a good RISC instruction set
> > > > by making each RISC instruction extremely complex. Look at how they multiply by 10.
> > > >
> > > > I believe that the RISC concept is why the ARM processor preforms so poorly compared to the Intel and
> > > > AMD CISC chips. You need a better architecture. I favor a stack-based direct execution architecture
> > > > like the Novix chip. Beware! The book "Stack Computers" written by a professor at CMU tries to justify
> > > > stack architecture using a chip which uses a register array to simulate a stack. At TI I worked on
> > > > a real stack computer which integrated the ALU into the top 2 stack elements and was laid out as a
> > > > 1-bit bit slice to reduce non-transistor silicon area. However, the executives at TI knew that "you
> > > > can't make money building CPUs" (ignore Intel and AMD). (Also ignore the quarterly earnings reports
> > > > that show your SBP9900 microprocessor out-selling all but one RAM chip by a factor of 10.)
> > > >
> > > > The ARM is best sold to NVIDIA to be lost into oblivion and replaced by a better architecture.
> > > >
> > > > Robert Pearson
> > >
> > > Wow. Is this 1 of April again or are these forums becoming a beacon for clinically insane?
> >
> > Or that guy was cryogenized last century, just woke up and forgot to read what happened the
> > last 15 years
>
> He's just showing what went on here years ago now that RWT is twenty five. I'm sure there's an
> awful lot we say seriously now that'll seem quite ridiculous in another ten or fifteen years ;-)
I'm sure he's just joking around. Jokes aside, if someone from the 80s got ported forward four decades, they'd say RISC is for high performance and x86 is for low power PCs. Fast forward and the situation flips. And it could flip again in the future, who knows
Topic | Posted By | Date |
---|---|---|
New Article: ARM Goes 64-bit | David Kanter | 2012/08/14 12:04 AM |
New Article: ARM Goes 64-bit | none | 2012/08/14 12:44 AM |
New Article: ARM Goes 64-bit | David Kanter | 2012/08/14 01:04 AM |
MIPS MT-ASE | Paul A. Clayton | 2012/08/14 09:01 AM |
MONITOR/MWAIT | EduardoS | 2012/08/14 10:08 AM |
MWAIT not specifically MT | Paul A. Clayton | 2012/08/14 10:36 AM |
MWAIT not specifically MT | EduardoS | 2012/08/15 03:16 PM |
MONITOR/MWAIT | anonymou5 | 2012/08/14 11:07 AM |
MONITOR/MWAIT | EduardoS | 2012/08/15 03:20 PM |
MIPS MT-ASE | rwessel | 2012/08/14 10:14 AM |
New Article: ARM Goes 64-bit | SHK | 2012/08/14 02:01 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 02:37 AM |
New Article: ARM Goes 64-bit | Richard Cownie | 2012/08/14 03:57 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 04:29 AM |
New Article: ARM Goes 64-bit | none | 2012/08/14 04:44 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 05:28 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 05:32 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/08/14 06:06 AM |
New Article: ARM Goes 64-bit | none | 2012/08/14 05:40 AM |
AArch64 select better than cmov | Paul A. Clayton | 2012/08/14 06:08 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 06:12 AM |
New Article: ARM Goes 64-bit | none | 2012/08/14 06:25 AM |
Predicated ld/store are useful | Paul A. Clayton | 2012/08/14 06:48 AM |
Predicated ld/store are useful | none | 2012/08/14 06:56 AM |
Predicated ld/store are useful | anon | 2012/08/14 07:07 AM |
Predicated stores might not be that bad | Paul A. Clayton | 2012/08/14 07:27 AM |
Predicated stores might not be that bad | David Kanter | 2012/08/15 01:14 AM |
Predicated stores might not be that bad | Michael S | 2012/08/15 11:41 AM |
Predicated stores might not be that bad | R Byron | 2012/08/17 04:09 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 06:54 AM |
New Article: ARM Goes 64-bit | none | 2012/08/14 07:04 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 07:43 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/08/14 06:07 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 06:20 AM |
New Article: ARM Goes 64-bit | none | 2012/08/14 06:29 AM |
New Article: ARM Goes 64-bit | anon | 2012/08/14 07:00 AM |
New Article: ARM Goes 64-bit | Michael S | 2012/08/14 03:43 PM |
New Article: ARM Goes 64-bit | Richard Cownie | 2012/08/14 06:53 AM |
OT: Conrad's "Youth" | Richard Cownie | 2012/08/14 07:20 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/08/14 06:04 AM |
New Article: ARM Goes 64-bit | mpx | 2012/08/14 08:59 AM |
New Article: ARM Goes 64-bit | Antti-Ville Tuunainen | 2012/08/14 09:16 AM |
New Article: ARM Goes 64-bit | anonymou5 | 2012/08/14 11:03 AM |
New Article: ARM Goes 64-bit | name99 | 2012/11/17 03:31 PM |
Microarchitecting a counter register | Paul A. Clayton | 2012/11/17 07:37 PM |
New Article: ARM Goes 64-bit | bakaneko | 2012/08/14 04:21 AM |
New Article: ARM Goes 64-bit | name99 | 2012/11/17 03:40 PM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/17 04:52 PM |
New Article: ARM Goes 64-bit | Doug S | 2012/11/17 05:48 PM |
New Article: ARM Goes 64-bit | bakaneko | 2012/11/18 05:40 PM |
New Article: ARM Goes 64-bit | Wilco | 2012/11/19 07:59 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/19 08:23 AM |
New Article: ARM Goes 64-bit | Wilco | 2012/11/19 09:31 AM |
Downloading µarch-specific binaries? | Paul A. Clayton | 2012/11/19 11:21 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/19 11:41 AM |
New Article: ARM Goes 64-bit | Wilco | 2012/11/21 07:44 AM |
JIT vs. static compilation (Was: New Article: ARM Goes 64-bit) | VMguy | 2012/11/22 03:21 AM |
JIT vs. static compilation (Was: New Article: ARM Goes 64-bit) | David Kanter | 2012/11/22 12:12 PM |
JIT vs. static compilation (Was: New Article: ARM Goes 64-bit) | Gabriele Svelto | 2012/11/23 03:50 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/23 10:09 AM |
New Article: ARM Goes 64-bit | EBFE | 2012/11/26 01:24 AM |
New Article: ARM Goes 64-bit | Gabriele Svelto | 2012/11/26 03:33 AM |
New Article: ARM Goes 64-bit | EBFE | 2012/11/27 11:17 PM |
New Article: ARM Goes 64-bit | Gabriele Svelto | 2012/11/28 02:32 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/26 12:16 PM |
New Article: ARM Goes 64-bit | EBFE | 2012/11/28 12:33 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/28 05:53 AM |
New Article: ARM Goes 64-bit | Michael S | 2012/11/28 06:15 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/28 07:33 AM |
New Article: ARM Goes 64-bit | Michael S | 2012/11/28 09:16 AM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/28 09:53 AM |
New Article: ARM Goes 64-bit | Eugene Nalimov | 2012/11/28 05:58 PM |
Amazing! | EduardoS | 2012/11/28 07:25 PM |
Amazing! (non-italic response) | EduardoS | 2012/11/28 07:25 PM |
Amazing! | EBFE | 2012/11/28 08:20 PM |
Undefined behaviour doubles down | EduardoS | 2012/11/28 09:10 PM |
New Article: ARM Goes 64-bit | EBFE | 2012/11/28 07:54 PM |
New Article: ARM Goes 64-bit | EduardoS | 2012/11/28 09:21 PM |
Have you heard of Transmeta? | David Kanter | 2012/11/19 03:47 PM |
New Article: ARM Goes 64-bit | bakaneko | 2012/11/19 09:08 AM |
New Article: ARM Goes 64-bit | David Kanter | 2012/11/19 03:40 PM |
Semantic Dictionary Encoding | Ray | 2012/11/19 10:37 PM |
New Article: ARM Goes 64-bit | Rohit | 2012/11/20 04:48 PM |
New Article: ARM Goes 64-bit | David Kanter | 2012/11/20 11:07 PM |
New Article: ARM Goes 64-bit | Wilco | 2012/11/21 06:41 AM |
New Article: ARM Goes 64-bit | David Kanter | 2012/11/21 10:12 AM |
A JIT example | Mark Roulo | 2012/11/21 10:30 AM |
A JIT example | Wilco | 2012/11/21 07:04 PM |
A JIT example | rwessel | 2012/11/21 09:05 PM |
A JIT example | Gabriele Svelto | 2012/11/23 03:53 AM |
A JIT example | EduardoS | 2012/11/23 10:13 AM |
A JIT example | Wilco | 2012/11/23 01:41 PM |
A JIT example | EduardoS | 2012/11/23 02:06 PM |
A JIT example | Gabriele Svelto | 2012/11/23 04:09 PM |
A JIT example | Symmetry | 2012/11/26 05:58 AM |
New Article: ARM Goes 64-bit | Ray | 2012/11/19 10:27 PM |
New Article: ARM Goes 64-bit | David Kanter | 2012/08/14 09:11 AM |
v7-M is Thumb-only | Paul A. Clayton | 2012/08/14 06:58 AM |
Minor suggested correction | Paul A. Clayton | 2012/08/14 08:33 AM |
Minor suggested correction | anon | 2012/08/14 08:57 AM |
New Article: ARM Goes 64-bit | Exophase | 2012/08/14 08:33 AM |
New Article: ARM Goes 64-bit | David Kanter | 2012/08/14 09:16 AM |
New Article: ARM Goes 64-bit | jigal | 2012/08/15 01:49 PM |
Correction re ARM and BBC Micro | Paul | 2012/08/14 08:59 PM |
Correction re ARM and BBC Micro | Per Hesselgren | 2012/08/15 03:27 AM |
Memory BW so low | Per Hesselgren | 2012/08/15 03:14 AM |
Memory BW so low | none | 2012/08/15 11:16 AM |
New Article: ARM Goes 64-bit | dado | 2012/08/15 10:25 AM |
Number of GPRs | Kenneth Jonsson | 2012/08/16 02:35 PM |
Number of GPRs | Exophase | 2012/08/16 02:52 PM |
Number of GPRs | Kenneth Jonsson | 2012/08/17 02:41 AM |
Ooops, missing link... | Kenneth Jonsson | 2012/08/17 02:44 AM |
64-bit pointers eat some performance | Paul A. Clayton | 2012/08/17 06:19 AM |
64-bit pointers eat some performance | bakaneko | 2012/08/17 08:37 AM |
Brute force seems to work | Paul A. Clayton | 2012/08/17 10:08 AM |
Brute force seems to work | bakaneko | 2012/08/17 11:15 AM |
64-bit pointers eat some performance | Richard Cownie | 2012/08/17 08:46 AM |
Pointer compression is atypical | Paul A. Clayton | 2012/08/17 10:43 AM |
Pointer compression is atypical | Richard Cownie | 2012/08/17 12:57 PM |
Pointer compression is atypical | Howard Chu | 2012/08/22 10:17 PM |
Pointer compression is atypical | Richard Cownie | 2012/08/23 04:48 AM |
Pointer compression is atypical | Howard Chu | 2012/08/23 06:51 AM |
Pointer compression is atypical | Wilco | 2012/08/17 02:41 PM |
Pointer compression is atypical | Richard Cownie | 2012/08/17 04:13 PM |
Pointer compression is atypical | Ricardo B | 2012/08/19 10:44 AM |
Pointer compression is atypical | Howard Chu | 2012/08/22 10:08 PM |
Unified libraries? | Paul A. Clayton | 2012/08/23 07:49 AM |
Pointer compression is atypical | Richard Cownie | 2012/08/23 08:44 AM |
Pointer compression is atypical | Howard Chu | 2012/08/23 05:17 PM |
Pointer compression is atypical | anon | 2012/08/23 08:15 PM |
Pointer compression is atypical | Howard Chu | 2012/08/23 09:33 PM |
64-bit pointers eat some performance | Foo_ | 2012/08/18 12:09 PM |
64-bit pointers eat some performance | Richard Cownie | 2012/08/18 05:25 PM |
64-bit pointers eat some performance | Richard Cownie | 2012/08/18 05:32 PM |
Page-related benefit of small pointers | Paul A. Clayton | 2012/08/23 08:36 AM |
Number of GPRs | Wilco | 2012/08/17 06:31 AM |
Number of GPRs | Kenneth Jonsson | 2012/08/17 11:54 AM |
Number of GPRs | Exophase | 2012/08/17 12:44 PM |
Number of GPRs | Kenneth Jonsson | 2012/08/17 01:22 PM |
Number of GPRs | Wilco | 2012/08/17 02:53 PM |
What about dynamic utilization? | Exophase | 2012/08/17 09:30 AM |
Compiler vs. assembly aliasing knowledge? | Paul A. Clayton | 2012/08/17 10:20 AM |
Compiler vs. assembly aliasing knowledge? | Exophase | 2012/08/17 11:09 AM |
Compiler vs. assembly aliasing knowledge? | anon | 2012/08/18 02:23 AM |
Compiler vs. assembly aliasing knowledge? | Ricardo B | 2012/08/19 11:02 AM |
Compiler vs. assembly aliasing knowledge? | anon | 2012/08/19 06:07 PM |
Compiler vs. assembly aliasing knowledge? | Ricardo B | 2012/08/19 07:26 PM |
Compiler vs. assembly aliasing knowledge? | anon | 2012/08/19 10:03 PM |
Compiler vs. assembly aliasing knowledge? | anon | 2012/08/20 01:59 AM |
Number of GPRs | David Kanter | 2012/08/17 12:46 PM |
RAT issues as part of reason 1 | Paul A. Clayton | 2012/08/17 02:18 PM |
Number of GPRs | name99 | 2012/11/17 06:37 PM |
Large ARFs increase renaming cost | Paul A. Clayton | 2012/11/17 09:23 PM |
Number of GPRs | David Kanter | 2012/08/16 03:31 PM |
Number of GPRs | Richard Cownie | 2012/08/16 05:17 PM |
32 GPRs ~2-3% | Paul A. Clayton | 2012/08/16 06:27 PM |
Oops, Message-ID: aaed6e38-c7bd-467e-ba41-f40cf1020e5e@googlegroups.com (NT) | Paul A. Clayton | 2012/08/16 06:29 PM |
32 GPRs ~2-3% | Exophase | 2012/08/16 10:06 PM |
R31 as SP/zero is kind of neat (NT) | Paul A. Clayton | 2012/08/17 06:23 AM |
32 GPRs ~2-3% | rwessel | 2012/08/17 08:24 AM |
32 GPRs ~2-3% | Exophase | 2012/08/17 09:16 AM |
32 GPRs ~2-3% | Max | 2012/08/17 04:19 PM |
32 GPRs ~2-3% | name99 | 2012/11/17 07:43 PM |
Number of GPRs | mpx | 2012/08/17 01:11 AM |
Latency and power | Paul A. Clayton | 2012/08/17 06:54 AM |
Number of GPRs | bakaneko | 2012/08/17 03:09 AM |
New Article: ARM Goes 64-bit | Steve | 2012/08/17 02:12 PM |
New Article: ARM Goes 64-bit | David Kanter | 2012/08/19 12:42 PM |
New Article: ARM Goes 64-bit | Doug S | 2012/08/19 02:02 PM |
New Article: ARM Goes 64-bit | Anon | 2012/08/19 07:16 PM |
New Article: ARM Goes 64-bit | Steve | 2012/08/30 07:51 AM |
Scalar vs Vector registers | Robert David Graham | 2012/08/19 05:19 PM |
Scalar vs Vector registers | David Kanter | 2012/08/19 05:29 PM |
New Article: ARM Goes 64-bit | Baserock ARM servers | 2012/08/21 04:13 PM |
Baserock ARM servers | Sysanon | 2012/08/21 04:14 PM |
A-15 virtualization and LPAE? | Paul A. Clayton | 2012/08/21 06:13 PM |
A-15 virtualization and LPAE? | Anon | 2012/08/21 07:13 PM |
Half-depth advantages? | Paul A. Clayton | 2012/08/21 08:42 PM |
Half-depth advantages? | Anon | 2012/08/22 03:33 PM |
Thanks for the information (NT) | Paul A. Clayton | 2012/08/22 04:04 PM |
A-15 virtualization and LPAE? | C. Ladisch | 2012/08/23 11:12 AM |
A-15 virtualization and LPAE? | Paul | 2012/08/23 03:17 PM |
Excessive pessimism | Paul A. Clayton | 2012/08/23 04:08 PM |
Excessive pessimism | David Kanter | 2012/08/23 05:05 PM |
New Article: ARM Goes 64-bit | Michael S | 2012/08/22 07:12 AM |
BTW, Baserock==product, Codethink==company (NT) | Paul A. Clayton | 2012/08/22 08:56 AM |
New Article: ARM Goes 64-bit | Reinoud Zandijk | 2012/08/21 11:27 PM |
New Article: ARM Goes 64-bit | Robert Pearson | 2021/07/26 09:11 AM |
New Article: ARM Goes 64-bit | anon | 2021/07/26 11:03 AM |
New Article: ARM Goes 64-bit | none | 2021/07/26 11:45 PM |
New Article: ARM Goes 64-bit | dmcq | 2021/07/27 07:36 AM |
New Article: ARM Goes 64-bit | Chester | 2021/07/27 01:21 PM |
New Article: ARM Goes 64-bit | none | 2021/07/27 10:37 PM |
New Article: ARM Goes 64-bit | anon | 2021/07/26 11:04 AM |