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Re: Is Parallel Programming Hard, And, If So, What Can You Do About It?

From Lynn Wheeler <lynn@garlic.com>
Newsgroups comp.arch
Subject Re: Is Parallel Programming Hard, And, If So, What Can You Do About It?
Date 2025-05-31 12:53 -1000
Organization Wheeler&Wheeler
Message-ID <87y0uc8k8o.fsf@localhost> (permalink)
References (13 earlier) <100vq44$1h5c4$1@dont-email.me> <1012euo$1fclb$1@paganini.bofh.team> <1012lf9$23l9t$2@dont-email.me> <101b2dk$4vts$2@dont-email.me> <101b8ei$a20i$1@dont-email.me>

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Stephen Fuld <sfuld@alumni.cmu.edu.invalid> writes:
> I was too flip in my answer, so here is, I think, a better one.  The
> "it" to which we are referring here is caching of write data.
>
> So let's look at a possible scenario.  Let's say the heads are at
> cylinder 100.  A write comes in for data that is at cylinder
> 300. Without write caching, the disk will move the heads to cylinder
> 300. Now lets say the next request is a read for data at cylinder 150.
> If the write had been cached, the disk can handle the read with only a
> 50 cylinder move, then the write with a 150 cylinder move for a total
> of 200 cylinders.  Without write caching, the first move is 200
> cylinders for the write, followed by 150 back for the read for a total
> of 350. Thus the read data, which is presumably more time critical, is
> delayed.
>
> Overall, write caching improves performance, but if you don't want it,
> then you can essentially not use it, either by forcing the writes to
> go to the media, or not using command queuing at all.

Early 70s, as mainstream IBM was converting everything to virtual
memory, I got into a battle. Somebody came up with a (LRU?) page
replacement algorithm that would replace non-changed pages (didn't
require a write before the read replacement) before changed pages (which
needed a write before being able to fetch the needed page). Nearly a
decade later, they finally realized that they were replacing highly
used, highly shared RO/non-changed pages ... before replacing, private,
single-task, changed data page (before they realized it was possible to
keep a pool of immediately available, changed pages that had been
pre-written).

ATM financial started using the IBM (airline) TPF operating system
... light-weight but had simple ordered arm queuing algorithm for
reads/updates/writes.

Then a little later in 70s an IBM tech in LA at a financial institution
redid it looking at ATM use history and anticipating account requests
(that would result in reads/updates/writes ordering that hadn't happened
yet). Under heavy load, it improved aggregate throughput (and under
lighter load it make little difference) ... sort of delaying a 300cyl
seek anticipating likelyhood of transaction (as yet to happen), that
would involve a shorter seek.

since sometime in the 80s, (at least) RDBMS have been using "write
caching" (write behind) where the sequential log/journal of "committed"
transactions is made and actual RDBMS writes happen in the
background. Failure recovery requires rereading the log and forcing
pending writes for committed transactions.

Originally in cluster environment, any (RDBNS) pending writes for
transaction lock request from a different system would force pending
writes before granting a different system the requested lock. I did a
hack where I could append queued/pending writes to passing the
transaction lock to a different system ... in the era of mbyte (shared,
multi-system, cluster) disks and gbyte interconnect.

-- 
virtualization experience starting Jan1968, online at home since Mar1970

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Is Parallel Programming Hard, And, If So, What Can You Do About It? Thomas Koenig <tkoenig@netcologne.de> - 2025-05-10 11:38 +0000
  Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-11 00:04 +0000
    Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-11 13:59 +0000
      Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Al Kossow <aek@bitsavers.org> - 2025-05-11 07:47 -0700
        Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-11 23:46 +0000
          Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-12 00:30 +0000
            Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-12 01:19 +0000
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-12 02:03 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-12 22:34 +0000
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Terje Mathisen <terje.mathisen@tmsw.no> - 2025-05-12 08:05 +0200
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-12 08:41 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-12 22:39 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-12 17:14 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-12 22:35 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-12 21:50 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-13 03:03 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-12 23:25 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-13 08:39 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? EricP <ThatWouldBeTelling@thevillage.com> - 2025-05-13 12:55 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-13 07:40 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-13 08:12 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-13 08:33 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-14 00:18 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-13 17:49 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-18 01:35 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lynn Wheeler <lynn@garlic.com> - 2025-05-18 14:10 -1000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-18 18:41 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Vir Campestris <vir.campestris@invalid.invalid> - 2025-05-19 21:46 +0100
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-19 14:58 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Vir Campestris <vir.campestris@invalid.invalid> - 2025-05-20 11:22 +0100
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lynn Wheeler <lynn@garlic.com> - 2025-05-20 16:38 -1000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-20 20:49 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-19 00:18 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-19 01:13 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-19 23:33 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-20 00:36 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-20 00:16 -0500
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-20 10:49 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-20 12:42 -0500
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-20 11:35 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-21 00:29 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-20 20:08 -0500
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-21 03:46 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-20 20:58 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? EricP <ThatWouldBeTelling@thevillage.com> - 2025-05-21 12:25 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? EricP <ThatWouldBeTelling@thevillage.com> - 2025-05-21 12:47 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-21 17:19 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? EricP <ThatWouldBeTelling@thevillage.com> - 2025-05-21 15:06 -0400
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                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-22 22:41 +0000
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                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-24 16:54 -0500
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                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-24 21:07 +0000
                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-24 17:26 -0500
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                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? John Levine <johnl@taugh.com> - 2025-05-25 20:47 +0000
                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-25 15:51 -0500
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                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-23 10:53 -0500
                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-23 17:03 +0000
                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-23 12:34 -0500
                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-24 00:38 -0500
                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-24 16:57 +0000
                Re: the power of junk, Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-24 14:24 -0500
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                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-20 20:54 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-21 05:39 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-20 23:42 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-21 02:08 -0500
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-21 13:39 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-21 00:57 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-14 13:31 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? John Levine <johnl@taugh.com> - 2025-05-14 18:01 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-14 18:12 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Thomas Koenig <tkoenig@netcologne.de> - 2025-05-14 18:45 +0000
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                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-23 11:29 -0500
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-24 03:17 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-23 08:28 -0700
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                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-24 09:23 -0700
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                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? John Levine <johnl@taugh.com> - 2025-05-26 19:19 +0000
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                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-27 07:34 -0700
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                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-27 20:57 -0700
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-28 07:47 +0000
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-28 14:50 +0000
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-28 08:48 -0700
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-28 08:46 -0700
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-28 12:08 -0400
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-28 09:20 -0700
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-28 12:52 -0400
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-28 10:15 -0700
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-28 14:16 -0400
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-28 13:37 -0700
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                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-26 13:36 -0700
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-26 23:26 +0000
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-26 20:31 +0000
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-26 13:45 -0700
                Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-26 23:24 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-25 19:16 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-25 16:27 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-26 03:01 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-25 23:58 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lynn Wheeler <lynn@garlic.com> - 2025-05-26 15:36 -1000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-05-26 20:14 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-26 07:13 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-26 07:31 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? antispam@fricas.org (Waldek Hebisch) - 2025-05-26 19:20 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-26 14:12 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-30 01:42 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-29 20:25 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-30 05:53 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lynn Wheeler <lynn@garlic.com> - 2025-05-31 12:53 -1000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? John Levine <johnl@taugh.com> - 2025-06-02 18:04 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-06-03 07:14 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-25 15:21 -0500
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-26 06:46 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Michael S <already5chosen@yahoo.com> - 2025-05-26 16:06 +0300
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-26 16:30 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-26 13:00 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-26 13:04 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-26 14:15 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-26 15:20 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-26 15:40 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-26 16:02 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-26 16:07 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Brett <ggtgp@yahoo.com> - 2025-05-27 18:40 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-27 12:28 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-27 12:42 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Brett <ggtgp@yahoo.com> - 2025-05-29 05:10 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-29 15:31 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Brett <ggtgp@yahoo.com> - 2025-05-30 01:17 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-29 15:33 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-27 12:28 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-26 23:12 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-26 23:32 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2025-05-26 19:00 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? David Brown <david.brown@hesbynett.no> - 2025-05-27 09:43 +0200
                Drive Caches (Re: Is Parallel Programming Hard, ...) Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-05-25 20:55 +0000
                Re: Drive Caches (Re: Is Parallel Programming Hard, ...) Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-26 00:07 -0400
                Re: Drive Caches (Re: Is Parallel Programming Hard, ...) BGB <cr88192@gmail.com> - 2025-05-26 00:59 -0500
                Re: Drive Caches (Re: Is Parallel Programming Hard, ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-26 07:13 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-23 22:19 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? EricP <ThatWouldBeTelling@thevillage.com> - 2025-05-23 20:51 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-17 23:57 +0000
  Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? quadibloc <quadibloc@gmail.com> - 2025-05-19 21:33 +0000
    Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-20 00:43 +0000
      Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-20 13:53 +0000
        Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? BGB <cr88192@gmail.com> - 2025-05-20 13:19 -0500
          Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-20 16:06 -0400
            Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-20 22:11 +0000
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? David Schultz <david.schultz@earthlink.net> - 2025-05-20 19:34 -0500
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-21 01:00 +0000
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-21 00:34 +0000
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? George Neuner <gneuner2@comcast.net> - 2025-05-20 21:30 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-20 18:39 -0700
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-21 03:41 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? George Neuner <gneuner2@comcast.net> - 2025-05-21 12:09 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-21 15:30 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-22 02:45 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lynn Wheeler <lynn@garlic.com> - 2025-05-21 07:06 -1000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? jseigh <jseigh_es00@xemaps.com> - 2025-05-21 17:32 -0400
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2025-05-21 07:05 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-22 02:48 +0000
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Stefan Monnier <monnier@iro.umontreal.ca> - 2025-05-21 08:23 -0400
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-21 14:08 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-22 02:49 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-22 17:34 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? scott@slp53.sl.home (Scott Lurndal) - 2025-05-22 17:42 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? mitchalsup@aol.com (MitchAlsup1) - 2025-05-23 01:54 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-22 22:42 +0000
                Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? George Neuner <gneuner2@comcast.net> - 2025-05-22 23:47 -0400
            Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-21 00:32 +0000
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-20 18:29 -0700
          Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-20 18:04 -0700
            Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-22 16:49 -0700
              Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-22 18:04 -0700
  Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-05-20 18:31 -0700

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