( Resolved ) AMD Ryzen Thread Ripper 2990WX Only using half of the logic processors

[vfxronin]

Hello,

I'm on the latest build of Houdini 18.596 using V-Ray for Houdini V-Ray Core 5.10.20 [5322b47e] I keep noticing a render speed difference between Maya and Houdini is slower and I kept dismissing to the learning curve,

I only noticed by accident when rending with buckets the VH only using half of the logic processors even dough there are 64 buckets present on the screen! disabling Embree significantly increased render time, but still only using half of the logic cores

has anyone else noticed something similar on AMD Ryzen Thread Ripper 2990WX?

[Muhammed_Hamed]

Very odd, I don't own this CPU anymore

I have the 3990wx, it works without issues in VFH and Vray for Maya
Could try setting this to 64 cores manually, in render threads

[david.anastacio]

Hi vfxronin,

Not the same CP, but all works good here.



Best,
David.

[Dubbie99]

We have noticed that same 1/2 thread usage on our farm. We are currently rendering 2 frame simultaneously to work around the issue. Luckily we aren't rendering RAM heavy scenes at the moment.

[miro.digital]

3990X here, working fine so far, all cores used // 5.10.20 (dc025ec2) on H18.5.633

[vfxronin]

We have noticed that same 1/2 thread usage on our farm. We are currently rendering 2 frame simultaneously to work around the issue. Luckily we aren't rendering RAM heavy scenes at the moment.

Have you found a way to isolate why it was happening?

Thank you for the replying everyone I guess it's a issolted issue with my computer

[vfxronin]

I found a Bug with OCIO in Vray Houdini! I'm using ACES aces 1.2, and I'm using my ENV verbal to set up my colour space. For some, it kills V-ray ability to render.
I ran the same test in Maya was absolutely fine.

Can someone try and replicate this on their side I don't know if it's the version of ACES or just Houdini ocio?

[ronald_a]

vfxronin are you using a recent nightly? there have been issues a while back, but everything seems fine atm.

[vfxronin]

vfxronin are you using a recent nightly? there have been issues a while back, but everything seems fine atm.

no, I'm using the Build in the offical Download section of the product page, the nightly doesn't give me access to the latest build.

[ronald_a]

vfxronin yeah, that was in the official build. request access to the nightlies via support. this works now.

[vfxronin]

vfxronin yeah, that was in the official build. request access to the nightlies via support. this works now.

Thank you, mate, but is there a stable build release in the nightlies with the fix?

[ronald_a]

that I don‘t know. But you should be able to use nightlies

[tsvetomira.girginova]

Thank you all for joining the discussion!
Thank you for the assistance, ronald_a.

The initial topic is located here, vfxronin.
As I just messaged you per e-mail, the fix is included in the nightly builds after 24 June (you are using V-Ray build from 16 June).
Update and give us feedback, please.

When new stable builds are available, we will inform you.

[tsvetomira.girginova]

vfxronin just confirmed by e-mail that this fix resolved his issue.

I want to inform you that It will be added to the official upcoming Hotfix.

Best regards,
TS