Wow, great help Marty!
Thank you very much!!!
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Technical Discussion » Point Position P pass Exporting Incorrectly out of Mantra
- merlino3d
- 65 posts
- Online
Technical Discussion » Ocean displacement on basic liquid shader
- merlino3d
- 65 posts
- Online
Wow, thanks Joker!
Actually the main problem was that my geo isn't a simple grid, but a rigged wave so when the two sides of the wave are near each other the displacement by luminance makes the two sides interpenetrate themselves. Using the XYZ options appears to be the correct one.
Many thanks for the support!
Actually the main problem was that my geo isn't a simple grid, but a rigged wave so when the two sides of the wave are near each other the displacement by luminance makes the two sides interpenetrate themselves. Using the XYZ options appears to be the correct one.
Many thanks for the support!
Technical Discussion » Ocean displacement on basic liquid shader
- merlino3d
- 65 posts
- Online
Ok, I found my error: in the basic liquid -> Displacement -> Displacement Map -> Disp Channel MUST be XYZ Displace.
Technical Discussion » Ocean displacement on basic liquid shader
- merlino3d
- 65 posts
- Online
Hi Joker! Thank you for the help, I try your step by step solution and then I'll tell you what happens here!
Thanks!
Thanks!
Technical Discussion » Ocean displacement on basic liquid shader
- merlino3d
- 65 posts
- Online
Hi!
I'm trying to figure out how to use the displacement generated from an “ocean evaluate” with a basic liquid shader. Just plugging the generated texture on the liquid shader brakes the geometry … where is my problem? I suppose it's something with the UV but, can't understand how to make it works the right way…
I'm trying to figure out how to use the displacement generated from an “ocean evaluate” with a basic liquid shader. Just plugging the generated texture on the liquid shader brakes the geometry … where is my problem? I suppose it's something with the UV but, can't understand how to make it works the right way…
Technical Discussion » how convert absolute path to relative path in motionFX
- merlino3d
- 65 posts
- Online
I'm having the same problem and just want to thanks for the explanation! Now it's clear and, also, it works!
Thank you!!!
Thank you!!!
Technical Discussion » Viewport rendering flat gray on Radeon card
- merlino3d
- 65 posts
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Hi K,
like you I tried to use linux (as its performance it's way better than win) but I had big problem with the combination ATI (non professional) / Linux.
Until 2 days ago I was using Ubuntu 14.10 LTS with decent results but there was always some flickering in the viewport.
Then I switched to Mint 17 (in my case w/cinnamon) using the last beta drivers from AMD and all works perfectly!
So my actual “perfectly working” config is:
Houdini 13.0.498
Linux Mint 17 w/Cinnamon
Radeon HD 7970 (Catalyst 14.6 beta)
My next step will be enable OpenCL via CPU
Cheers!
like you I tried to use linux (as its performance it's way better than win) but I had big problem with the combination ATI (non professional) / Linux.
Until 2 days ago I was using Ubuntu 14.10 LTS with decent results but there was always some flickering in the viewport.
Then I switched to Mint 17 (in my case w/cinnamon) using the last beta drivers from AMD and all works perfectly!
So my actual “perfectly working” config is:
Houdini 13.0.498
Linux Mint 17 w/Cinnamon
Radeon HD 7970 (Catalyst 14.6 beta)
My next step will be enable OpenCL via CPU
Cheers!
Houdini Lounge » how much gpu memory openCL(pyro) can handle?
- merlino3d
- 65 posts
- Online
Thanks Marty! I'll try as soon as possible!
It works!
There's the result of the first test with an identical scene (standard sphere, standard volcano settings, just OpenCL enabled) running under Ubuntu
CPU with OpenCL = 1m01s (same as Win7)
Memory used = 8.1GB (on Win was almost 9GB)
Now testing the memory limits of my GPU (3GB) with Ubuntu … let's seeeeee …
Actually it seems it's going way better, it's now on frame 57 with 0.025 as subdivisions, but I can't see the console with the OpenCL memory usage. I've set the variable HOUDINI_OCL_REPORT_MEMORY_USE=1
but it doesn't appear … any idea?
It works!
There's the result of the first test with an identical scene (standard sphere, standard volcano settings, just OpenCL enabled) running under Ubuntu
CPU with OpenCL = 1m01s (same as Win7)
Memory used = 8.1GB (on Win was almost 9GB)
Now testing the memory limits of my GPU (3GB) with Ubuntu … let's seeeeee …
Actually it seems it's going way better, it's now on frame 57 with 0.025 as subdivisions, but I can't see the console with the OpenCL memory usage. I've set the variable HOUDINI_OCL_REPORT_MEMORY_USE=1
but it doesn't appear … any idea?
Houdini Lounge » how much gpu memory openCL(pyro) can handle?
- merlino3d
- 65 posts
- Online
well, after “some” work on my pc … I've installed ubuntu and houdini works perfect! Hurra!
But, it seems like the Intel SKD for OpenCl doesn't works with Ubuntu! Buuuuuuu!
It works just for
Red Hat Enterprise Linux* OS 6.0 or higher (64-bit version)
SUSE Linux Enterprise Server* 11.1 or higher (64-bit version)
Anyone knows if it works on the free version of the OS?
By the records:
same original simulation, standard volcano with no changes:
CPU = 1m07s (without OpenCL!)
GPU = 30s
It's really impressive the difference. With only CPU t's like 33% faster! ok, maybe things will change with a complex sim and I want to do some test, but the difference seems really worth the time you spend on learning how to make it works on linux!
But, it seems like the Intel SKD for OpenCl doesn't works with Ubuntu! Buuuuuuu!
It works just for
Red Hat Enterprise Linux* OS 6.0 or higher (64-bit version)
SUSE Linux Enterprise Server* 11.1 or higher (64-bit version)
Anyone knows if it works on the free version of the OS?
By the records:
same original simulation, standard volcano with no changes:
CPU = 1m07s (without OpenCL!)
GPU = 30s
It's really impressive the difference. With only CPU t's like 33% faster! ok, maybe things will change with a complex sim and I want to do some test, but the difference seems really worth the time you spend on learning how to make it works on linux!
Houdini Lounge » how much gpu memory openCL(pyro) can handle?
- merlino3d
- 65 posts
- Online
MartybNz
You can see Houdini flags from the terminal: hconfig -a
Thanks! Really interesting!
back to 3GB GPU limits:
I just changed the pyro Division Size from 0.15 to 0.05 so the final containers res (after 240 frames simulation) is 163 x 383 x 197 = 12 298 513 voxels and this is the last memory report:
===========OpenCL Memory Usage===========
Total Memory Allocated: 544 MB
In Memory Pool: 249 MB
# of Buffers in Memory Pool: 7
In InUse List: 0 MB
Active Memory: 294 MB
Application's memory usage is almost 9GB
At this point if I double the res using 0.025 it should go out of memory, as the 544 MB should go to 544 x 8 = 4352 MB … let's try!
EDIT:
Ok, it crashes! But way before I expected: on frame 45 my pc crashes with a blue screen.
So there is the complete report from frame 43 to 44 (no substeps)
It seems like it uses a maximum 1GB of memory (Total Memory Allocated) so I loose something, maybe that's for every container that make use of OpenCL (and I don't know witch one make use and witch one doesn't)
At frame 44 the containers res is 248 x 352 x 254 = 22 173 184 voxels and the application's memory usage is 8.5GB
===========OpenCL Memory Usage===========
Total Memory Allocated: 524 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 2
In InUse List: 0 MB
Active Memory: 349 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 611 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 2
In InUse List: 0 MB
Active Memory: 436 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 2
In InUse List: 0 MB
Active Memory: 524 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 2
In InUse List: 0 MB
Active Memory: 524 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 436 MB
In Memory Pool: 87 MB
# of Buffers in Memory Pool: 1
In InUse List: 0 MB
Active Memory: 349 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 611 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 611 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 699 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 961 MB
In Memory Pool: 0 MB
# of Buffers in Memory Pool: 0
In InUse List: 0 MB
Active Memory: 961 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 824 MB
In Memory Pool: 212 MB
# of Buffers in Memory Pool: 40
In InUse List: 0 MB
Active Memory: 611 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 2
In InUse List: 0 MB
Active Memory: 524 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 2
In InUse List: 0 MB
Active Memory: 524 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 2
In InUse List: 0 MB
Active Memory: 524 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 889 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 2
In InUse List: 0 MB
Active Memory: 714 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 801 MB
In Memory Pool: 190 MB
# of Buffers in Memory Pool: 4
In InUse List: 0 MB
Active Memory: 611 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 794 MB
In Memory Pool: 182 MB
# of Buffers in Memory Pool: 4
In InUse List: 0 MB
Active Memory: 611 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 794 MB
In Memory Pool: 182 MB
# of Buffers in Memory Pool: 4
In InUse List: 0 MB
Active Memory: 611 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 794 MB
In Memory Pool: 182 MB
# of Buffers in Memory Pool: 4
In InUse List: 0 MB
Active Memory: 611 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 4
In InUse List: 0 MB
Active Memory: 524 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 4
In InUse List: 0 MB
Active Memory: 524 MB
===========OpenCL Memory Usage===========
Total Memory Allocated: 699 MB
In Memory Pool: 174 MB
# of Buffers in Memory Pool: 4
In InUse List: 0 MB
Active Memory: 524 MB
EDIT II:
Actually right now I'm really curious about make those same test on linux. I hope tomorrow I have the time to format my pc and make a dual boot setup …
Houdini Lounge » how much gpu memory openCL(pyro) can handle?
- merlino3d
- 65 posts
- Online
MartybNz
To test the memory usage stats set
HOUDINI_OCL_REPORT_MEMORY_USE=1

Wow! That's good! (and … where can I find all those interesting flags? It's there any documentation?)
Starting with the same sim I've done before leaving all standard parameters. The final containers are 95 x 110 x 91
I've run 2 times as I can't understand why the “total memory allocated” and the “In Memory Pool” are so different and was thinking I've make a mistake:
CPU OpenCL report #1
===========OpenCL Memory Usage===========
Total Memory Allocated: 4093 MB
In Memory Pool: 4066 MB
# of Buffers in Memory Pool: 5217
In InUse List: 0 MB
Active Memory: 27 MB
CPU OpenCL report #2
===========OpenCL Memory Usage===========
Total Memory Allocated: 4092 MB
In Memory Pool: 4066 MB
# of Buffers in Memory Pool: 5217
In InUse List: 0 MB
Active Memory: 26 MB
AND the memory usage of the application is about 9GB
GPU OpenCL report #1
===========OpenCL Memory Usage===========
Total Memory Allocated: 253 MB
In Memory Pool: 228 MB
# of Buffers in Memory Pool: 237
In InUse List: 0 MB
Active Memory: 24 MB
GPU OpenCL report #2 = #1
AND the memory usage of the application is almost 5GB
Houdini Lounge » how much gpu memory openCL(pyro) can handle?
- merlino3d
- 65 posts
- Online
Thanks Marty!
So I'll start with Ubuntu/Kubuntu, I think I'll need some help from the community so more resource it's better for me!
Right now, I'm trying to touch my GPU's memory limits. It is cooking right now Just a question: in a simulation like the volcano preset we have density, vel (x,y,z), temperature, fuel, heat and so on, anyone is stored in the GPU memory or just some of them?
So I'll start with Ubuntu/Kubuntu, I think I'll need some help from the community so more resource it's better for me!
Right now, I'm trying to touch my GPU's memory limits. It is cooking right now Just a question: in a simulation like the volcano preset we have density, vel (x,y,z), temperature, fuel, heat and so on, anyone is stored in the GPU memory or just some of them?
Houdini Lounge » how much gpu memory openCL(pyro) can handle?
- merlino3d
- 65 posts
- Online
It works perfectly here! I've a i7 4770K and there's my personal bench:
open Houdini -> ctrl+sphere -> volcano -> ctrl+Right Arrow (it jumps to the last frame: 240)
CPU = 1m 23s
CPU w/OpenCL = 1m 02s
GPU (ATI 7980 3GB) = 33s
(using H13.0.260)
EDIT:
oh! and W7
next tests will be with newer version (downloading right now) and I also want to make a dual bot system with mint 16. About that: I'm new to linux, witch version should I choose? In mint's site the KDE description says “Solid, full-featured, polished”: is that “full-featured” saying that is more complete than the other version so I'll have less problems as beginner?
open Houdini -> ctrl+sphere -> volcano -> ctrl+Right Arrow (it jumps to the last frame: 240)
CPU = 1m 23s
CPU w/OpenCL = 1m 02s
GPU (ATI 7980 3GB) = 33s
(using H13.0.260)
EDIT:
oh! and W7
next tests will be with newer version (downloading right now) and I also want to make a dual bot system with mint 16. About that: I'm new to linux, witch version should I choose? In mint's site the KDE description says “Solid, full-featured, polished”: is that “full-featured” saying that is more complete than the other version so I'll have less problems as beginner?
Houdini Learning Materials » No smoke rendering
- merlino3d
- 65 posts
- Online
Hi Josh,
just look at your lights: in the “Attenuation Options” tab you have “phisically correct” selected, so you can change the type (i.e. switch to “no attenuation”) or increase (a lot) the lights intensity.
Cheers.
just look at your lights: in the “Attenuation Options” tab you have “phisically correct” selected, so you can change the type (i.e. switch to “no attenuation”) or increase (a lot) the lights intensity.
Cheers.
Technical Discussion » Source Particle emitting in surface normal direction - HOW
- merlino3d
- 65 posts
- Online
@tamte:
is it faster? I says generally … if it's possible it's faster using pointwrangle or vop sop?
is it faster? I says generally … if it's possible it's faster using pointwrangle or vop sop?
Technical Discussion » Source Particle emitting in surface normal direction - HOW
- merlino3d
- 65 posts
- Online
Technical Discussion » One frame per CPU core?
- merlino3d
- 65 posts
- Online
Theoretically you can use the command line to launch different render sessions, that use just 1 processor but I don't how much you can gain in final render time. Have you tried to do0 some test?
Houdini Learning Materials » Questions from Beginner of Houdini 13
- merlino3d
- 65 posts
- Online
I suggest you to look at the tutorials part of this site:
H13 Masterclass - Particles by Jeff Lait
Lesson 7 | Particles
Lesson 8 | Particle Examples from NEXT STEPS ANIMATION by Ari Danesh
You can have invaluable information from there and the answer to your questions.
H13 Masterclass - Particles by Jeff Lait
Lesson 7 | Particles
Lesson 8 | Particle Examples from NEXT STEPS ANIMATION by Ari Danesh
You can have invaluable information from there and the answer to your questions.
Houdini Learning Materials » Help with POPsolver!
- merlino3d
- 65 posts
- Online
Hi Luigi,
can you tell what's the difference? maybe a hip file or a screenshot showing the differences
can you tell what's the difference? maybe a hip file or a screenshot showing the differences
Houdini Learning Materials » Normals in Houdini 13
- merlino3d
- 65 posts
- Online
Maybe you can put the normals values on the vel with a point node and “inherit” the velocity, it should works .
If not, can you share the hip?
If not, can you share the hip?
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