Posts by Janus

1) Message boards : Client : Cycles Denoising on split frames (Message 15316)
Posted 2 days ago by Profile Janus
If you were to animate the 32sample,8x8 split plane with slightly overlapping tiles would the seams be more visible since they systematically deviate from the rest of the image by having samples from both tiles?
2) Message boards : Problems and Help : Upgraded to BOINC 7.8.3, "Postponed: Waiting to acquire slot directory lock. Another instance may be running." (Message 15315)
Posted 2 days ago by Profile Janus
Not entirely sure what that means - although it sounds like something is keeping files open in the slots directory when it shouldn't. What do you see in the task manager when this happens?
3) Message boards : Problems and Help : why does image embedding not support https ? (Message 15314)
Posted 2 days ago by Profile Janus
For now try with just //
- it autoselects https/http
4) Message boards : Client : Looking for bold MAC users (Message 15301)
Posted 16 days ago by Profile Janus
Yes, OpenCL would probably be a better option due to compatibility in general. It may not be quite as fast as CUDA but the simple fact that more systems support it means that it could be the faster option overall.

As for requirements: A fairly recent card will be required but during these tests the actual requirements are much lower. What that means exactly is a bit uncertain.
5) Message boards : Comments and discussion : 3411 (Message 15298)
Posted 24 days ago by Profile Janus
No idea when the implementation of this will be fully ready but we are currently storing all the returned variations of each frame in order to be able to test the implementation on that data when it is.


Currently working on this. Unfortunately it requires a rewrite of the validator service interface.
6) Message boards : Client : Cycles Denoising on split frames (Message 15297)
Posted 24 days ago by Profile Janus
Tried this already - it was very inefficient compared to simply rendering full-screen tiles (the overlap was rendered many times by many clients). It was especially difficult to establish just how much overlap was needed since some post-processing nodes require more overlap than others (and sometimes even the node settings are relevant too). Extreme blur, as used in the depth-of-field node for example, potentially requires a very large overlap.

In the long run split-frame rendering will have to do all post-processing on the server compute cluster from combined sample data from all clients. It is pretty much the only way to do this in a reasonable manner. We just aren't there yet, so at the moment we do full-frame rendering for that kind of scenes or require the artist to do the post-processing on their own machine after the split-frame render has been automatically combined by the server.
7) Message boards : Comments and discussion : 3413 (Message 15296)
Posted 24 days ago by Profile Janus
The farm can only handle .blend files - not PKZIP archives. Please re-upload as a compressed .blend (Files -> Save As -> Save As Blend File -> Compress).

This session was rejected.
8) Message boards : Client : Cycles Denoising on split frames (Message 15294)
Posted 25 days ago by Profile Janus
Default policy is to not split frames if they use a feature (blur etc.) that could cause visual artifacts. In certain cases this means that people must resubmit their session in order to have it split.
9) Message boards : Client : 2.79 support ? (Message 15291)
Posted 25 days ago by Profile Janus
Yes, we're up-to-date on Blender versions right now
10) Message boards : Comments and discussion : 3411 (Message 15284)
Posted 13 Nov 2017 by Profile Janus
I believe this session is the perfect example on why the current pixel-based validator sometimes fails entirely on Cycles renders. If you click the picture in the preview and zoom in there's this very fine grained random noise all over. It is different every time a node returns a frame.

Good news is that it seems there is a way to turn that to an advantage. The pixels may not be the same but the noise characteristics from each render node almost is. By analyzing the noise in segments, comparing THAT, and then comparing the remaining pixel data in the rendered images with filtering for the noise profile applied it should be possible to get a lot closer to a good validator for Cycles sessions.

No idea when the implementation of this will be fully ready but we are currently storing all the returned variations of each frame in order to be able to test the implementation on that data when it is.

In parallel with the above idea there is another validation mode being tested already, it has to do with detecting large features in each image and matching those to each other. It is going to be interesting to see if those two ideas combined could make for a validator that works well for both Blender Internal (like the pixel validator) and Cycles.

Naturally the "marked as invalid" WUs will also be credited eventually
11) Message boards : Comments and discussion : 3412 (Message 15281)
Posted 10 Nov 2017 by Profile Janus
Interestingly we also seem to have hit a bug in the progress estimator script on the farm that causes the render to fail entirely. Will have to abort this one and look into why that is.
12) Message boards : Comments and discussion : 3412 (Message 15279)
Posted 8 Nov 2017 by Profile Janus
Corrected split to 1 since post processing nodes involving blur/bloom are used and rendertime is lower than 1 hour anyways.
Corrected frame size to the one specified in the .blend-file. This is the resolution that will be used.
Avoid scripts unless you need them, they add to review time.

If you want to benchmark anything but the time it takes admins to review the session before submitting it to the farm then send in something that takes longer than 2 mins to render.
13) Message boards : Problems and Help : completed marked as invalid (Message 15278)
Posted 8 Nov 2017 by Profile Janus
Seems like a general issue with that session. There's something random in it that causes validation error.
14) Message boards : Comments and discussion : 3409 (Message 15276)
Posted 7 Nov 2017 by Profile Janus
Switched this one into best-effort mode since WUs were taking too long and having trouble validating. Credit will eventually be granted
15) Message boards : Comments and discussion : 3409 (Message 15272)
Posted 5 Nov 2017 by Profile Janus
Some of the units are getting returned now and it does indeed look like somewhere on the order of 2 days for a unit.

If you re-queue this without postprocessing nodes then here are another few suggestions:
- Turn the sample count up a little bit, the output is quite noisy and the validator system prefers images without noise. Unless the noise is intentional of course
- Split it into more than 8 parts to allow a larger part of the farm to work on it
- Queue the entire animation at once if you intend to render it in its entirety. A lot of performance is lost in starting up and shutting down small sessions.

Looks interesting
16) Message boards : Comments and discussion : 3409 (Message 15267)
Posted 3 Nov 2017 by Profile Janus
The workunits for this session are really big. Unfortunately they couldn't be split because of the use of blur post-processing nodes which require full-frame rendering.

If it turns out that they simply take too long then the session will have to be aborted.
17) Message boards : Server backend and mirrors : Data Compression (Message 15266)
Posted 3 Nov 2017 by Profile Janus
Got the new compute node hardware up and running and the first task assigned to it has been to help with the data compression. We're down to around 1000 sessions in the compression queue until the service has cleared the backlog.

There is a small amount of sessions that have gotten stuck somehow, still trying to figure out exactly why.
18) Message boards : Client : BURP porting (Message 15265)
Posted 3 Nov 2017 by Profile Janus
There's a Mac client in testing right now, the first CUDA workunit was returned just a few weeks ago and validated properly.
The primary issue seems to be that there are very few Macs connected at the moment, so testing is very slow.
19) Message boards : Server backend and mirrors : Extended Monday maintenance, Starting already Saturday 7nth of October 2017 (Message 15263)
Posted 14 Oct 2017 by Profile Janus
Inspection of the fans was completed and the CPU heatsink replaced. New fans for storage were ordered and are going to be installed this weekend. Expect about half an hour of downtime later today.
20) Message boards : Server backend and mirrors : Extended Monday maintenance, Starting already Saturday 7nth of October 2017 (Message 15262)
Posted 7 Oct 2017 by Profile Janus
Servers will be up and down a bit this weekend in order to service a couple of aging fan ball bearings that sound like they need a bit of attention.
While the main web-server is down it will also have its stock CPU heatsink replaced with an improved version. The stock one has proven insufficient to cool the system under load.


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