[clemens_at]

Hello

There is a massive performance loss when upgrading to the newest intel chipset drivers.
Im on a HP Z840 with dual E5 2690v3. The driver that i causing all the trouble is 10.1.2.19 so i went back to 9.4.2.1019.

It took me the whole day to finally find the source of the problem because I installed the drives a while back and did not use maxwell since then.
Today when I started a render it did not start to render right away plus it was extremely slow.
i did some testing - 0 in number of threads did no work at all - also typing in the actual number of threads(48) did not work - when i tried 40 it kinda worked but still very slow.

anyways - just sharing the information - it still seems very weired to me.
im on windows 7(with all the latest updates) and the latest build (3.2.1.5) by the way (other builds had the same issue)

[clemens_at]

I still have a problem and dont know whats causing it:

My Benchwell score is:

Operating System:
Win64
Processor:
Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHz
Total Physical Memory:
63 GB
Number of Cores:
48
Engine version:
3.2.1.5
Time:
5m20s
Benchmark:
871.43

and here is the score from the benchwell page from another user with the same setup:

Operating System:
Win64
Processor:
Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHz
Total Physical Memory:
64 GB
Number of Cores:
48
Engine version:
3.1.1.0
Time:
2m15s
Benchmark:
2061.2

i realise its a different engine version but still...
any help appreciated...

[Asmithey]

The only difference I see is the Maxwell version. Maybe try it with MR 3.1.1.0

[clemens_at]

The only difference I see is the Maxwell version. Maybe try it with MR 3.1.1.0

i did - pretty much same results.

do you have the latest engine version installed?
i see you have a dual 26xx v3 too - would be interesting for comparison.

thanks

[Mihai]

But what does the task manager show? 100% CPU usage?

[clemens_at]

But what does the task manager show? 100% CPU usage?

it jumps around weirdly between 70 and 98%.
I have reinstalled windows just to make sure - same problem.
all other benchmarks (cinebench, corona bench) run just fine.
its only maxwell that is performing very strange.
i have no clue what is going on.

[burnin]

Do you have it set to Low priority? Change to Normal. There's an issue with having windows updates on (thread).
Although it also shows some occasional slowdowns (win7)

[clemens_at]

Well i just start maxwell and then run benchwell - i can only change the priority if i stop the benchmark and restart again.
when i do this benchmark results in the first minute are around 300 as opposed to ~800 when i just start it normal.
windows update was apperently off the whole time.

[T0M0]

You can change the priority even the process is running:

Open TaskManager - Processes - right click on maxwell.exe - Set Priority

Then you have some process running on your system, which causes this "slowdown".

Also keep in mind, when you are rendering huuuge renders, Maxwell stops(or run on less threads) for a while when writes large MXI files on disc.

There is one command

Code: Select all

-nomxi

which doesn't allow Maxwell to interrupt rendering process with writing files.