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Unicamp-OpenPower/Lobby

Minicloud

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Sep 03 21:51

jr-santos98 commented #36
Aug 30 21:10

ravanelli commented #36
Aug 30 13:02

jr-santos98 commented #36
Aug 25 21:21

ravanelli commented #36
Aug 25 21:19

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Aug 25 20:28

jr-santos98 commented #36
Aug 23 17:21

ravanelli labeled #36
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Aug 23 17:21

ravanelli opened #36
Jun 22 19:41

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Feb 23 15:19

ALutz273 commented #18
Feb 23 13:22

steffen-AEI closed #18
Feb 23 13:22

steffen-AEI commented #18
Feb 23 12:48

ALutz273 commented #18
Nov 25 2020 00:08

rpsene closed #35
Nov 23 2020 18:35

rpsene commented #35

Rafael Sene

@rpsene

you can create an ssh tunnel though...

Alexandre Bencz

@bencz

@JoelLinn , did you build this Debian Images using a Power8 instructions ?

Joel Linn

@JoelLinn

The first one I built on LE using qemu(-static). (The scripts run apt in a chroot).

Once there is a running debian ppc64be system, one can build a new image without using cpu emulation

that should be a tad faster

where you trying to create a new one @bencz ?

Alexandre Bencz

@bencz

@JoelLinn I'm not trying ... actually, I don't know how to compile Debian and all of its dependencies ...

I believe that compiling Debian BE, with the gcc option "-mcpu = power8", can improve performance a little ...

After analyzing a lot of assembly code, by godbolt, here is an example of the comparisons I was making (https://godbolt.org/z/e1M7z444e), I found some interesting differences, in the opcodes and even in the structure of the generated code. it may be that we have an interesting performance gain, when compiling Debian BE using this gcc instruction

laggarcia

@laggarcia:communick.com

[m]

@bencz: building the whole OS from source will take time. Be prepared. 15+ years ago I tried something similar to what you are thinking, but with an x86 machine (Pentium IV at that time) and Gentoo (where building from source is the default option). After tuning the build process to my very specific version of processor and rebuilding the whole system, I can say to you that I didn't notice any difference in the usual day-to-day performance (e-mail, web browsing, etc.). Things may have changed, of course, as this was a long time ago, but my educated guess is that you should worry about this only for specific applications that really require more performance or for libraries widely used in the system, such as glibc.

Joel Linn

@JoelLinn

@bencz ppc64(be) debian still supports old powermacs, and probably even playstation 3 and xbox360 with custom kernels.... If someone wants newer instructions they will just say use ppc64le I guess. IIRC there where quite some discussions when they made the switch to require newer power arch at some point...

And indeed no source was compiled at all when I generated the images. Binaries are all in the debian ports repo, so all the script does is first unpack a predefined minimal set of debs from the repo and then chroot into it and install the rest using the apt it unpacked manually before

Joao Silva

@joaomas

Is it possible import .ova in enviroment?

Rafael Sene

@rpsene

@joaomas nope!

you may need to convert to qcow or raw

mirabilos

@mirabilos

hi, when can I expect to hear back from yesterday’s request for access?

mirabilos

@mirabilos

ok, I heard back, but I can’t figure out how to make the ssh port available

ah, it’s not in the machine config…

Rafael Sene

@rpsene

@mirabilos ssh <USER>@minicloud.parqtec.unicamp.br -p <PORT>

https://github.com/Unicamp-OpenPower/minicloud/wiki

Joao Silva

@joaomas

I received notice about "Your account has expired", the account was recreated last month. What is the e-mail/procedure to active this account again? I continue to access my instance created there normally.

emp-mbo

@emp-mbo

Hi,
I have been trying for 2 hours now to access a RHEL VM via ssh and the compute rule for the ssh port, but w/o success :-(

I have tried two different images (CentOS 7 and 8), also tried rebooting and also added a security policy especially for ssh, but I only get a time-out. Does anybody have any hints for me? Of course, I have read the wiki thoroughly. In the past (Feb 21), it worked for me.

Alexandre Bencz

@bencz

What port number you are using ?

Did you have enabled the ssh port on network configuration on minicloud ?

emp-mbo

@emp-mbo

Thank you for your Feedback! I have found my mistake in the mean time: I had enabled ssh port 22 in the security group but selected "secuity group" in the field Remote, not CIDR.

My fault :-(

Thanks again for your help!

Rafael Sene

@rpsene

@bencz thanks for replying :)

aer

@aer:matrix.org

[m]

Hello

Rafael Sene

@rpsene

@aer:matrix.org your account will be available for 30 days only.

aer

@aer:matrix.org

[m]

Sorry I had a bit of a congestion and had to delete the message.

What about if I continue to use the VPS? Does this 30 days only policy apply for everyone?

Rafael Sene

@rpsene

the general rule is 30 days for everyone; if can request for more time and we will evaluate based on our capacity vs demand.

aer

@aer:matrix.org

[m]

I see.

aer

@aer:matrix.org

[m]

Well, this threw quite the wrench into what I had wanted to do... hummm

Consider Debian: they require one, or several buildbots to build all of their packages for ppc64be and le.
Therefore, wouldn't their access be permanent?
Or do they have their own infra by now?

Rafael Sene

@rpsene

Debian has a dedicated bare-metal machine.

@aer:matrix.org what is your goal?

aer

@aer:matrix.org

[m]

I wanted to provide a constant build and running infrastructure for an open source project.
However, now I will just evaluate performance.
Thank you for your support.

Rafael Sene

@rpsene

@aer:matrix.org what is the oss project?

aer

@aer:matrix.org

[m]

My team has informed me that we are not currently interested in your services. Thank you for the support regardless.
Perhaps in the future.

Rafael Sene

@rpsene

@aer:matrix.org if you need something for Power for a bigger purpose, please send me an email at rpsene@br.ibm.com. We can talk about onbording it at IBM Cloud.

aer

@aer:matrix.org

[m]

Good night.

My team informed me that it would be best for me to tell you about the project, as the possibility exists for that to develop awareness and outreach into another open source community.

I will return later to read your replies, as I know that it's late in Brazil.

Infrastructure for open source project and performance comparisons. The project is here github.com/tsweet77/repeater-max
Repeater CUDA Source Code: github.com/tsweet77/repeater-max-cuda

Repeater Nesting Utility: github.com/tsweet77/nesting-files-creation-utility

Here is a paper on it: www.academia.edu/48996313/Introducing_a_New_Programming_Object_for_All_Languages_The_Servitor

Here's its creator's academic hub: utsa.academia.edu/ThomasSweet

Another goal of this is, in Mr. Thomas Sweet's words: "to reach more parts of the open source community". Ergo, spreading awareness.

Note: I am not Mr. Thomas Sweet, I am speaking on his behalf as he told me to, as then I would control the server better (I am working alongside him).

Thank you.

aer

@aer:matrix.org

[m]

We are offering the code to the open source community. You have the repos, maybe that's an implication, sorry about my bluntness.