using cpu only for feeding gpu

merle van osdol

merle van osdol

Joined: 1 Mar 05

Posts: 513

Credit: 60724446

RAC: 0

7 Nov 2014 17:18:43 UTC

Topic 197786

(moderation:

)

I am doing only gpu tasks right now. Perseus Arm Survey. I have a headless computer which is set for hyperthreading (4/8). Does it make any difference if the setting is for HT or not? I am lazy and would rather not hook up a monitor and keyboard. Thanks.

merle

What is freedom of expression? Without the freedom to offend, it ceases to exist.

— Salman Rushdie

Jeroen

Joined: 25 Nov 05

Posts: 379

Credit: 740030628

RAC: 38

using cpu only for feeding gpu

7 Nov 2014 18:59:13 UTC

Message 124483

(moderation:

)

There is some dependence on the CPU with the GPU BRP applications. On my systems, I have seen better performance for BRP5 with HT disabled. I think when HT is enabled, there is the possibility where two tasks may run on the same core which can slow down both tasks.

Since you are running Windows, another option is to download Process Lasso and set the BRP applications affinity to avoid non-physical cores. This program will also allow you to set the applications to a higher priority.

Jeroen

merle van osdol

merle van osdol

Joined: 1 Mar 05

Posts: 513

Credit: 60724446

RAC: 0

RE: There is some

7 Nov 2014 23:49:13 UTC

Message 124484 in response to message 124483

(moderation:

)

Quote:

There is some dependence on the CPU with the GPU BRP applications. On my systems, I have seen better performance for BRP5 with HT disabled. I think when HT is enabled, there is the possibility where two tasks may run on the same core which can slow down both tasks.

Since you are running Windows, another option is to download Process Lasso and set the BRP applications affinity to avoid non-physical cores. This program will also allow you to set the applications to a higher priority.

Jeroen

thanks Jeroen,
going to try Lasso.

merle

What is freedom of expression? Without the freedom to offend, it ceases to exist.

— Salman Rushdie