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== Today's topics ==
== Today's topics ==
* The potential use of Jitter and other virtual machines to speed up Octave execution, by Mohammad-Reza Nabipoor.
* ADD TOPICS HERE
** [https://octave.discourse.group/t/vm-for-octave-interpreter/2686 Discourse thread]
** '''Unfortunately the speaker didn't show. jwe presented his ideas on VM and linear evaluation instead.'''
* Drop "native" MXE Octave builders from buildbot configuration?
** [https://octave.discourse.group/t/drop-native-builds-from-mxe-octave/2689 Discourse thread]
*** Drop the builder from the buildbot configuration.
*** Don't '''actively''' remove support for native builds from MXE Octave. But don't spend too much time maintaining it. Maybe at some later time, someone will step up to maintain it again.
* Timeframe for Octave 7.2 release?
** Important fixes (among others possible loss of .m file content on exit)
** still unresolved: bug {{bug|62308}} use of octave::feval causes error: function '...' not found
*** '''jwe will create a RC within two weeks'''
* Update on Fosshost?
** Buildbot worker on ARM hardware?
*** No, see below
*** Maybe, at a later point ask again for access to their AARCH64 server farm.
** Possible to run a Mercurial server? With mirror(?), forks for GSoC students(?), ...
*** Possible, needs setup 😇
*** For the time being, GSoC students should use a public service for their fork.
** Short summary: Octave got one x86_64 server instance '''(2 cores, 4 GB memory, 500 GB HDD)''', useful as webserver probably?!
<syntaxhighlight lang="bash>
$ uname -a
Linux fosshost 5.10.0-14-amd64 #1 SMP Debian 5.10.113-1 (2022-04-29) x86_64 GNU/Linux
 
$ free -h
              total
Mem:          3.8Gi
 
$ lsblk
NAME  MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda      8:0    0  64G  0 disk
├─sda1  8:1    0  63G  0 part /
├─sda2  8:2    0    1K  0 part
└─sda5  8:5    0  975M  0 part [SWAP]
sdb      8:16  0  500G  0 disk
sr0    11:0    1  378M  0 rom
 
$ cat /proc/cpuinfo  # two cores
processor      : 0
vendor_id      : GenuineIntel
cpu family      : 15
model          : 6
model name      : Common KVM processor
stepping        : 1
microcode      : 0x1
cpu MHz        : 2400.084
cache size      : 16384 KB
physical id    : 0
siblings        : 2
core id        : 0
cpu cores      : 2
apicid          : 0
initial apicid  : 0
fpu            : yes
fpu_exception  : yes
cpuid level    : 13
wp              : yes
flags          : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc nopl xtopology cpuid tsc_known_freq pni cx16 x2apic hypervisor lahf_lm cpuid_fault pti
bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit
bogomips        : 4800.16
clflush size    : 64
cache_alignment : 128
address sizes  : 40 bits physical, 48 bits virtual
power management:
</syntaxhighlight>
:* Access by Arun, jwe, Kai, anyone with time and interest (or '''ideas what to do with it''') is welcome to help with the setup.
:** Kai thinks this could be a webserver, however, what is the benefit to the current situation? 😓
:** See jwe's note here about potential use cases. [https://octave.discourse.group/t/current-recommendation-for-mercurial-hosting/2726/5 Moving hg and buildbot from Digital Ocean to Fosshost]
:'''Kai will start moving the wiki to FossHost; all web-services should move there eventually'''
* State of <code>__unimplemented__</code>
** https://octave.discourse.group/t/implementing-unimplemented-m/2706/5
** Need clarity about the purpose: Helping search vs. Motivate to join Octave community.
* How to implement a classdef class in C++ code only?
** Why is the classdef implementation so complicated? Does it need to be?
** @carandraug and @Maged will look into this for their GSoC project. Pointers welcome.
** Maybe, some kind of documentation could be a result of the GSoC project.


== Previous topics ==
== Previous topics ==
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** [https://octave.discourse.group/t/a-small-benchmark-for-interpreted-code-for-three-versions-of-octave/2531/4 Discourse thread for background]
** [https://octave.discourse.group/t/a-small-benchmark-for-interpreted-code-for-three-versions-of-octave/2531/4 Discourse thread for background]
** Analysis and profiling of existing code base -- share and solicit experiences.
** Analysis and profiling of existing code base -- share and solicit experiences.
** Performance benchmark to track speed over time as part of CI? (Not as part of CI for now, can be done separately, Arun will share progress updates on Discourse)
** Performance benchmark to track speed over time as part of CI?


* GSoC: call for mentors (Nir/Kai)
* GSoC: call for mentors (Nir/Kai)
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== See also ==
== See also ==


* Next meeting: [[Online Developer Meeting (2022-06-28)]]
* Next meeting: [[Online Developer Meeting (2022-05-24)]]
* Last meeting: [[Online Developer Meeting (2022-04-26)]]
* Last meeting: [[Online Developer Meeting (2022-03-22)]]


[[Category:2022]]
[[Category:2022]]
[[Category:Meetings]]
[[Category:Meetings]]
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