[FIXED] General instability in Fusion tab

FIXED in Beta 2. Fusion tab now appears to be reasonably stable on the GPU for both Win 7 and 10.

Numerous simple operations in the Fusion tab seem prone to cause crashes. Connecting outputs to create a Merge. Sometimes just viewing a Merge. Activating a Viewer LUT. Moving nodes around in the Flow.

How does the logging work? Does it save info only about the most recent session, or does it collect all the crashes in a particular time period?

http://www.bryanray.name/ResolveCrashLogs/DaVinci-Resolve-logs-20180410-182430.zip

Windows 7 Pro, SP1
2x Intel Xeon E5-2690 v2
64 GB RAM
2x Titan X, driver 388.13

There's a temporary fix you can try. It worked for me but I'm not a heavy user, although Fusion was crashing even for me.

In preferences>configuration check the box "Always Run Fusion on CPU"

Same here. Seems like the Fusion tab is not properly implemented yet. Kind of far from it, like the Fairlight tab was in the first v14 beta. And that took a long and painfull path to properly work. Even on a stable release it wasnt 100%. I really hope the Fusion implementation goes a shorter and less painfull path thant did v14, because it so great the general idea of it all together.

[Peter Chamberlain]

The last 5 crashes are usually in the logs... but I can say W7 is not on our test profile or supported. W10 creators edition is the version I recall listed in the config guide.

Understood. Data may still be helpful, though, I hope. I'm also testing under Win10 Pro at home, but my hardware there is well below recommended spec.

edit:
Resolve on my lousy hardware at home on Win 10 is much more stable than my terrific hardware at work on Win 7. I haven't crashed yet here.

Pentium Dual Core E5300
8 GB RAM
Geforce GT 420, driver 388.13

Same problem here:

Windows 10, 64 bit, latest updates
32 GB RAM
NVidia GTX 960, 4GB, Driver 390.77
c: > 100GB free
d: > 1TB free
e: > 2TB free

Importing any MP4. Importing any PNG with transparent BG.
Drag MP4 to timeline. Change to fusion. All good.
Open Mediapool in fusion. Drag the PNG to the line between MediaIn1 and MediaOut1 to merge the MediaIn1 and the PNG.
Result: Davinci Resolve ends without error message (just closes) in 9 of ten cases; in 1 case: regular crash

Log:

https://1drv.ms/u/s!AqK90XmMjMcvhEJbIh6ZIBxU3e7r

Hatti

P.s. What I tried:

Set fusion to use CPU
Limit RAM to Resolve and Fusion
Set GPU processing mode from CUDA to OpenCL

In preferences>configuration check the box "Always Run Fusion on CPU"

Good call; that appears to have stabilized it. Took me forever to find it, though, since it's a Fusion-specific option in the main Resolve prefs. I'll do some more experimenting to see if it's the newish OCL tools or use of the GPU in general that causes problems.