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[Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication s
From: |
Arun Giridhar |
Subject: |
[Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0 |
Date: |
Mon, 25 Apr 2022 12:37:46 -0400 (EDT) |
Follow-up Comment #9, bug #62358 (project octave):
Found it: https://hg.savannah.gnu.org/hgweb/octave/rev/298995435071
It's the one that adds custom memory allocators to Array.
Bisection trail:
$ hg bisect -g 8d7671609955 ## 6.4.0 known fast: 469 GFLOPS
$ hg bisect -b 04120d65778a ## 7.1.0 known slow: 444 GFLOPS
Testing changeset 30510:84344af9b019 (320 changesets remaining, ~8 tests)
## 444 GFLOPS
$ hg bisect -b
Testing changeset 30370:dbff48b54dd2 (160 changesets remaining, ~7 tests)
## 467 GFLOPS
$ hg bisect -g
Testing changeset 30438:ad705550616c (80 changesets remaining, ~6 tests)
## 468 GFLOPS
$ hg bisect -g
Testing changeset 30473:b33ae3c094ac (40 changesets remaining, ~5 tests)
## 470 GFLOPS
$ hg bisect -g
Testing changeset 30492:e9a6d3822244 (20 changesets remaining, ~4 tests)
## 444 GFLOPS
$ hg bisect -b
Testing changeset 30486:298995435071 (10 changesets remaining, ~3 tests)
## 446 GFLOPS
$ hg bisect -b
Testing changeset 30480:83dbee7c8f08 (5 changesets remaining, ~2 tests)
## 468 GFLOPS
$ hg bisect -g
Testing changeset 30482:ddd58087ca97 (3 changesets remaining, ~1 tests)
## 468 GFLOPS
$ hg bisect -g
Testing changeset 30484:02b11b9f1e61 (2 changesets remaining, ~1 tests)
## 468 GFLOPS
$ hg bisect -g
The first bad revision is:
changeset: 30486:298995435071
branch: stable
parent: 30484:02b11b9f1e61
user: John W. Eaton <jwe@octave.org>
date: Sat Dec 04 08:49:18 2021 -0500
summary: allow custom allocators for the Array class
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Reply to this item at:
<https://savannah.gnu.org/bugs/?62358>
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- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, Stefan Schlögl, 2022/04/24
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, Arun Giridhar, 2022/04/25
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, Markus Mützel, 2022/04/25
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, Arun Giridhar, 2022/04/25
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, Stefan Schlögl, 2022/04/25
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, Arun Giridhar, 2022/04/25
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, John W. Eaton, 2022/04/25
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, Arun Giridhar, 2022/04/25
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0, John W. Eaton, 2022/04/25
- [Octave-bug-tracker] [bug #62358] Performance of Matrix Multiplication significantly slower in 7.1.0 compared to 6.1.0,
Arun Giridhar <=